# Austro Engine Engine Mandatory Service Bulletin MSB-E4-036/1: Revision 1 - Rights: © Austro Engine. Filed by the FAA in regulations.gov docket FAA-2022-0013; AD 2022-03-03 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Austro Engine Engine Mandatory Service Bulletin MSB-E4-036/1](https://openairdocs.org/service-documents/austro-engine/msb-e4-036-1.md) - Title as filed: MSB-E4-036_rev.1 - Pages: 31 - PDF: https://openairdocs.org/files/sha256/b4/e6/b4e6f5c16cd15dbac0a44fd1539241fb21bcd396d865c41499ab7b6a0a670629 - Page: https://openairdocs.org/service-documents/austro-engine/msb-e4-036-1/file/b4e6f5c16cd1 ## Text Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 1-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at Distribution: Portal Date: 15.12.2021 1. Basic information 1.1. Subject High Pressure Pump (HPP) Inspection and Replacement 1.2. Record of revisions Rev. Date Reason 0 30.11.2021 Initial release 1 14.12.2021 “Engine affected ” (paragraph 1.4 ), “Reason” (paragraph 1.5) and “Credits” (paragraph 1.9) are modified to have consistency with EASA AD wording. Reference to SI-E4-018 “identification of HPP gear” added. 1.3. Definitions and Acronyms For the purpose of this Service Bulletin, the following definitions and acronyms apply: AD: Airworthiness Directive CH: Cylinder Head FH: Flight Hours HPP: High Pressure Pump n/a: Not applicable no.: Number p/n or p/ns: Part number or Part numbers SB: Service Bulletin s/n or s/ns: Serial number or Serial numbers Group 1 engines: Model E4 engines in configuration “ -A”, installed on single engine aeroplanes Group 2 engines: Model E4 engines in configuration “ -B” or “ -C” and Model E4P engines, installed on twin-engine aeroplanes Serviceable part: Any HPP driving gear, eligible for installation, which is not an affected part ### Page 2 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 2-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 1.4. Engines affected Engine affected: E4 Series Serial numbers affected: All E4/E4P engine s/ns having a n affected CH /HPP driving gear combination installed. All E4/E4P engine s/ns having an affected HPP gear installed. Affected HPP gear: HPP driving gear p/n E4A-30-000-201 having s/n listed in the following Table 1 Affected cylinder head/HPP driving gear combination: Cylinder head, having Part Number (P/N) E4A-12-500-000, if installed in combination with a high-pressure pump (HPP) driving gear P/N E4A-30-000-601 (any revision) or P/N E4A- 30-000-201 rev. AB.1. Note: Table 1 lists the s/ns of the affected driving gears installed on certain batches of HPP p/n E4A-30-000-000 and E4A-30-000-BHY. To determine if an affected part is installed, s/ns of the HPP on which an affected part is installed and the engine s/n on which such HPP is installed are provided. Where the engine s/n is not indicated, the HPP was provided as a spare part. Please note that only the gear s/ns identify an affected part, engine and HPP s/ns are provided for reference only Note: To identify the cylinder head installed, refer to the maintenance manual E4.08.04 chapter 85. Additional Cylinder Head identification methods are provided in the Service Instruction no. SI-E4-016 Note: In respect of the Service Bulletin no. MSB -E4-034, engines and parts were reworked by Austro Engine pending approval of the initial release. To ease the identification, removed s/ns are marked in grey and strikethrough (example) Note: For these engines where the MSB-034 or/and MSB-035 were performed, refer to the paragraph 1.9 for compliance credits Note: The Service Information no. SI-E4-018 provide guidance for HPP driving gear part number and revision identification ### Page 3 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 3-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at Table 1 – Affected HPP driving gear serial numbers High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N 19-09-11-02-01162 0246 20-06-18-02-00889 1049 20-10-26-02-00628 1950 19-09-11-02-01167 0414 E4-C-05107 20-06-18-02-00890 1051 20-10-26-02-00629 1968 19-09-11-02-01168 0270 E4P-C-05003 20-06-18-02-00891 1001 20-10-26-02-00630 1775 19-09-11-02-01169 0240 20-06-18-02-00893 1028 E4-A-00198 20-10-26-02-00631 1773 19-09-11-02-01170 0410 E4P-C-05005 20-06-18-02-00894 0550 20-10-26-02-00632 1903 19-09-11-02-01171 0412 E4-A-00232 20-06-18-02-00895 1041 E4-C-06042 20-10-26-02-00633 1211 19-09-11-02-01172 0415 E4-C-05109 20-06-18-02-00896 1048 E4-C-06031 20-10-26-02-00634 1233 19-09-11-02-01189 0382 20-06-18-02-00897 1030 20-10-26-02-00635 1363 E4-A-06082 19-09-11-02-01190 0267 20-06-18-02-00898 1027 20-10-26-02-00637 1785 19-09-11-02-01191 0258 20-06-18-02-00899 1056 E4P-C-06027 20-10-26-02-00638 1958 19-09-11-02-01192 0256 20-06-18-02-00900 0664 E4-A-06021 20-10-26-02-00639 1887 19-09-11-02-01193 0261 20-06-18-02-00901 1114 20-10-26-02-00640 1982 19-09-11-02-01194 0257 20-06-18-02-00902 0979 20-10-26-02-00641 1953 19-09-11-02-01195 0264 20-06-18-02-00903 1061 20-10-26-02-00642 1811 19-09-11-02-01196 0255 20-06-18-02-00904 0762 20-10-26-02-00643 1818 19-09-11-02-01197 0274 20-06-18-02-00905 0756 20-10-26-02-00644 1890 19-09-11-02-01198 0408 20-06-18-02-00906 1060 E4-A-00475 20-10-26-02-00645 1781 19-09-11-02-01199 0272 20-06-18-02-00907 1023 E4-A-00408 20-12-14-02-00002 1955 19-09-11-02-01200 0333 20-06-18-02-00908 1073 20-12-14-02-00003 1449 E4-A-06088 19-09-11-02-01201 0332 20-06-18-02-00909 1042 20-12-14-02-00004 1976 19-09-11-02-01202 0244 20-06-18-02-00910 1066 E4-C-06043 20-12-14-02-00005 1938 19-09-11-02-01203 0330 20-06-18-02-00911 0766 20-12-14-02-00006 1816 19-09-11-02-01204 0383 20-06-18-02-00912 1046 20-12-14-02-00007 1947 19-09-11-02-01205 0254 20-06-18-02-00913 1044 20-12-14-02-00009 1929 19-09-11-02-01206 0324 20-06-18-02-00914 1103 E4-C-06032 20-12-14-02-00010 1988 19-09-11-02-01207 0262 20-06-18-02-00915 1128 E4-B-00112 20-12-14-02-00011 1799 19-09-11-02-01208 0237 20-06-18-02-00916 0699 20-12-14-02-00012 1986 19-09-11-02-01209 0329 20-06-18-02-00917 1026 E4-A-00214 20-12-14-02-00013 1936 19-09-11-02-01210 0386 20-06-18-02-00918 1100 20-12-14-02-00014 1368 19-09-11-02-01211 0265 20-06-18-02-00919 1069 20-12-14-02-00017 1940 19-10-01-02-00755 0233 20-06-18-02-00920 0723 E4-A-06025 20-12-14-02-00020 1422 E4-A-06080 19-10-01-02-00756 0224 E4-B-05006 20-06-18-02-00921 1127 20-12-14-02-00021 1941 19-10-01-02-00760 0226 E4-B-05004 20-06-18-02-00922 1034 E4-A-00367 20-12-14-02-00024 1779 19-10-01-02-00763 0241 E4-B-05001 20-06-18-02-00923 1032 20-12-14-02-00025 1946 19-10-01-02-00764 0416 20-06-18-02-00924 1036 20-12-14-02-00026 1974 19-10-01-02-00768 0260 20-06-18-02-00925 1094 20-12-14-02-00028 1969 19-10-01-02-00772 0268 E4-A-05086 20-06-18-02-00926 1011 E4-A-06061 20-12-14-02-00035 1921 19-10-01-02-00775 0248 20-06-18-02-00927 1038 20-12-14-02-00036 1817 19-10-01-02-00779 0370 20-06-18-02-00928 1031 E4-C-00041 20-12-14-02-00038 1881 19-10-01-02-00784 0231 20-06-18-02-00929 1037 20-12-14-02-00039 1346 19-10-01-02-00786 0242 20-06-18-02-00930 1015 E4-A-00604 20-12-14-02-00043 1830 19-10-01-02-00788 0235 20-06-18-02-00931 0632 E4-A-06024 20-12-14-02-00048 1178 19-10-01-02-00790 0266 20-06-18-02-00932 1082 20-12-14-02-00052 1350 E4-C-00604 19-10-01-02-00796 0131 E4-C-05106 20-06-18-02-00933 1024 E4-A-06060 20-12-14-02-00053 1437 19-10-01-02-00804 0228 E4-B-05002 20-06-18-02-00934 0833 E4-A-00456 20-12-14-02-00059 1167 19-10-01-02-00809 0227 E4-A-05085 20-06-18-02-00935 1012 20-12-14-02-00064 1405 19-10-14-02-00404 0222 20-06-18-02-00936 1006 20-12-14-02-00065 1331 E4-A-06076 19-10-14-02-00405 0247 E4-C-05110 20-06-18-02-00937 1021 20-12-14-02-00069 1434 E4-A-06087 19-10-14-02-00409 0364 E4-A-05084 20-06-18-02-00938 1004 20-12-14-02-00073 1375 19-10-14-02-00410 0253 20-06-18-02-00939 0622 20-12-14-02-00074 1389 E4-A-06092 19-10-14-02-00415 0365 E4-C-05105 20-06-18-02-00940 0729 20-12-14-02-00075 1403 E4-C-06057 19-10-14-02-00416 0232 20-06-18-02-00941 0585 20-12-14-02-00079 1342 19-10-14-02-00420 0236 20-06-18-02-00942 0769 20-12-14-02-00080 1380 19-10-14-02-00432 0229 E4-B-05008 20-06-18-02-00943 0830 20-12-14-02-00081 1343 E4-A-06068 19-10-14-02-00437 0411 E4-A-05075 20-06-18-02-00944 0849 20-12-14-02-00086 1400 E4P-C-06049 19-10-14-02-00438 0239 E4-B-05005 20-06-18-02-00945 0820 21-02-08-02-00002 1349 19-10-14-02-00446 0374 E4-A-05087 20-06-18-02-00946 0571 21-02-08-02-00003 1446 19-10-14-02-00454 0193 E4P-B-05004 20-06-18-02-00947 0825 E4-A-06030 21-02-08-02-00004 1319 E4-A-00115 19-10-14-02-00457 0251 E4-C-05108 20-06-18-02-00948 0683 E4-A-06013 21-02-08-02-00005 1340 E4-B-00541 19-12-12-02-00002 0195 E4-A-05081 20-06-18-02-00949 0734 21-02-08-02-00006 1439 E4P-C-06056 19-12-12-02-00004 0366 20-06-18-02-00950 0738 21-02-08-02-00007 1402 19-12-12-02-00005 0169 20-06-18-02-00951 1081 21-02-08-02-00008 1384 19-12-12-02-00009 0363 20-06-18-02-00952 0690 21-02-08-02-00009 1412 ### Page 4 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 4-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N 19-12-12-02-00011 0358 20-06-18-02-00953 0827 21-02-08-02-00010 1372 19-12-12-02-00015 0190 20-06-18-02-00954 0641 21-02-08-02-00011 1355 E4-A-06095 19-12-12-02-00016 0376 20-06-18-02-00955 0805 21-02-08-02-00013 1163 E4-C-06055 19-12-12-02-00017 0369 E4-A-05079 20-06-18-02-00956 0625 21-02-08-02-00015 1479 19-12-12-02-00020 0146 20-06-18-02-00957 0792 21-02-08-02-00016 1432 19-12-12-02-00023 0225 20-06-18-02-00958 0815 21-02-08-02-00017 1360 19-12-12-02-00029 0361 E4P-C-05001 20-06-18-02-00959 0840 21-02-08-02-00018 1383 19-12-12-02-00031 0372 E4P-C-05004 20-06-18-02-00960 0839 21-02-08-02-00019 1329 19-12-12-02-00032 0127 20-06-18-02-00961 0644 E4P-C-06008 21-02-08-02-00020 1330 E4-A-06085 19-12-12-02-00033 0177 20-06-18-02-00962 0802 E4-A-00323 21-02-08-02-00021 1435 19-12-12-02-00034 0179 20-06-18-02-00963 0810 E4-C-00091 21-02-08-02-00022 1410 19-12-12-02-00035 0118 20-06-18-02-00964 0793 21-02-08-02-00023 1373 E4-C-00344 19-12-12-02-00039 0223 20-06-18-02-00965 0966 21-02-08-02-00024 1395 19-12-12-02-00046 0367 E4-C-05111 20-06-18-02-00966 0783 21-02-08-02-00025 1367 E4-C-06068 19-12-12-02-00047 0120 E4P-B-05003 20-06-18-02-00967 0848 21-02-08-02-00026 1320 19-12-12-02-00048 0362 20-06-18-02-00968 0974 21-02-08-02-00027 1414 19-12-12-02-00049 0197 20-06-18-02-00970 0736 21-02-08-02-00028 1392 19-12-12-02-00057 0122 20-06-18-02-00971 0856 21-02-08-02-00029 1431 19-12-12-02-00058 0155 20-06-18-02-00972 1079 E4-A-00507 21-02-08-02-00030 1333 E4-A-00504 19-12-12-02-00064 0205 20-06-18-02-00973 0732 21-02-08-02-00031 1493 19-12-12-02-00065 0119 E4P-C-05002 20-06-18-02-00974 0674 21-02-08-02-00032 1376 19-12-12-02-00066 0407 E4-C-05112 20-06-18-02-00975 1050 21-02-08-02-00033 1317 19-12-12-02-00068 0263 E4-B-05012 20-06-18-02-00976 0671 21-02-08-02-00034 1409 E4-A-06079 19-12-12-02-00070 0371 E4-A-05083 20-06-18-02-00977 0647 21-02-08-02-00035 1377 19-12-12-02-00071 0238 E4-C-05117 20-06-18-02-00978 1101 E4-B-00061 21-02-08-02-00036 1394 19-12-12-02-00072 0413 E4-B-05007 20-06-18-02-00979 1105 E4-C-06036 21-02-08-02-00037 1345 E4-A-06093 19-12-12-02-00076 0117 20-06-18-02-00980 0844 21-02-08-02-00038 1454 19-12-12-02-00077 0249 20-06-18-02-00981 0743 21-02-08-02-00040 1335 E4P-C-06048 19-12-12-02-00079 0245 E4-C-05116 20-06-18-02-00982 0841 21-02-08-02-00041 1406 19-12-12-02-00080 0409 E4-B-05010 20-06-18-02-00983 1043 E4P-C-06019 21-02-08-02-00042 1420 20-01-15-02-00861 0271 E4P-C-05008 20-06-18-02-00984 1116 21-02-08-02-00043 1404 20-01-15-02-00864 0348 20-06-18-02-00985 1047 21-02-08-02-00044 1387 20-01-15-02-00888 0425 20-06-18-02-00986 0752 21-02-08-02-00045 1452 E4P-C-06050 20-01-15-02-00912 0288 E4-C-00001 20-06-18-02-00987 0789 21-02-08-02-00047 1353 20-01-15-02-00926 0315 E4P-C-005011 20-06-18-02-00988 0661 21-02-08-02-00048 1322 E4-C-06067 20-01-15-02-00929 0385 20-06-18-02-00989 1045 E4-A-06047 21-02-08-02-00049 1430 E4-C-06058 20-01-15-02-00933 0375 20-06-18-02-00990 1093 E4-C-06033 21-02-08-02-00050 1397 20-01-15-02-00934 0180 E4-C-05093 20-06-18-02-00991 1059 21-02-08-02-00051 1448 E4P-C-00067 20-01-15-02-00938 0360 20-06-18-02-00992 1106 21-02-08-02-00052 1168 E4-A-06084 20-01-15-02-00939 0143 20-06-18-02-00993 0895 21-02-08-02-00053 1464 20-01-15-02-00940 0250 E4-B-05003 20-06-18-02-00994 1065 21-02-08-02-00054 1433 E4-C-06064 20-01-15-02-00941 0147 20-06-18-02-00995 1022 21-02-08-02-00055 1341 E4-A-00270 20-01-15-02-00942 0230 E4-A-05082 20-06-18-02-00997 1039 21-02-08-02-00056 1374 20-01-15-02-00943 0368 20-06-18-02-00998 1013 21-02-08-02-00057 1423 20-01-15-02-00944 0252 20-06-18-02-01000 1089 E4-B-00050 21-02-08-02-00059 1166 20-01-15-02-00945 0359 E4-C-05094 20-06-18-02-01001 1064 21-02-08-02-00060 1407 E4-B-00382 20-02-13-02-01378 0338 20-06-18-02-01003 1067 21-02-08-02-00061 1323 E4-A-00492 20-02-13-02-01379 0399 E4P-C-05007 20-06-18-02-01004 1070 21-02-08-02-00062 1445 E4-A-06090 20-02-13-02-01380 0297 E4-C-05119 20-06-18-02-01005 1017 E4-A-06046 21-02-08-02-00063 1165 E4-B-00143 20-02-13-02-01381 0351 E4-A-05089 20-06-18-02-01006 1035 21-02-08-02-00064 1413 20-02-13-02-01382 0350 20-06-18-02-01007 1080 E4-A-00508 21-02-08-02-00065 1386 E4-A-00428 20-02-13-02-01383 0393 20-06-18-02-01008 1075 21-02-08-02-00066 1356 E4-C-06059 20-02-13-02-01384 0378 20-06-18-02-01009 1052 E4P-C-06020 21-02-08-02-00067 1382 E4-C-06054 20-02-13-02-01385 0380 20-06-18-02-01010 1115 21-02-08-02-00068 1436 20-02-13-02-01386 0278 20-06-18-02-01011 1074 E4-C-06029 21-02-08-02-00069 1450 E4-B-00540 20-02-13-02-01387 0286 E4-C-00263 20-06-18-02-01012 1018 E4-C-06024 21-02-08-02-00070 1344 20-02-13-02-01388 0273 20-06-18-02-01013 1072 21-02-08-02-00071 1324 20-02-13-02-01389 0443 20-06-18-02-01014 1033 21-02-08-02-00072 1357 20-02-13-02-01390 0284 E4-B-05009 20-06-18-02-01015 1062 21-02-08-02-00073 1460 E4-C-00008 20-02-13-02-01391 0296 E4-C-05115 20-06-18-02-01016 1020 21-02-08-02-00074 1461 20-02-13-02-01392 0419 E4-A-05088 20-06-18-02-01017 1029 21-02-08-02-00075 1408 E4-A-06081 20-02-13-02-01393 0334 20-07-10-02-00002 0698 21-02-08-02-00076 1339 20-02-13-02-01394 0402 20-07-10-02-00003 1309 E4P-C-06038 21-02-08-02-00077 1326 20-02-13-02-01395 0314 20-07-10-02-00004 0861 E4P-C-06011 21-02-08-02-00078 1337 20-02-13-02-01396 0280 20-07-10-02-00005 0898 21-02-08-02-00079 1371 ### Page 5 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 5-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N 20-02-13-02-01397 0381 20-07-10-02-00006 0854 21-02-08-02-00080 1458 E4-C-06079 20-02-13-02-01398 0421 20-07-10-02-00007 0741 21-02-08-02-00081 1532 20-02-13-02-01399 0319 E4-A-00487 20-07-10-02-00008 0889 21-02-08-02-00082 1421 E4-C-06056 20-02-13-02-01400 0259 20-07-10-02-00009 0867 E4-A-00207 21-02-08-02-00083 1459 20-02-13-02-01401 0384 20-07-10-02-00010 0697 21-02-08-02-00084 1318 20-02-13-02-01402 0377 20-07-10-02-00011 0748 21-02-08-02-00085 1327 E4-B-06002 20-02-13-02-01403 0331 20-07-10-02-00012 0711 21-02-08-02-00086 1393 E4-A-06094 20-02-13-02-01404 0345 20-07-10-02-00013 0862 21-02-08-02-00087 1418 E4P-C-06047 20-02-13-02-01405 0276 20-07-10-02-00015 0912 E4P-C-06010 21-02-08-02-00088 1416 20-02-13-02-01406 0275 20-07-10-02-00016 0864 E4-C-06018 21-02-08-02-00089 1495 20-02-13-02-01407 0304 20-07-10-02-00017 1154 21-02-08-02-00091 1453 20-02-13-02-01408 0355 E4-C-05113 20-07-10-02-00018 0946 E4-B-00039 21-02-08-02-00092 1455 E4-C-06072 20-02-13-02-01409 0279 E4-B-05011 20-07-10-02-00019 0750 21-02-08-02-00093 1465 20-02-13-02-01410 0341 20-07-10-02-00020 0704 21-02-08-02-00095 1425 20-02-13-02-01411 0282 20-07-10-02-00021 0911 21-02-08-02-00096 1472 20-02-13-02-01412 0404 20-07-10-02-00022 0803 21-02-08-02-00098 1359 E4-A-06078 20-02-13-02-01413 0306 E4-C-05126 20-07-10-02-00023 0885 E4-A-06031 21-02-08-02-00099 1332 20-02-13-02-01414 0283 20-07-10-02-00024 0710 E4-A-05091 21-02-08-02-00100 1415 20-02-13-02-01415 0356 20-07-10-02-00025 0910 E4P-Z-06002 21-02-08-02-00101 1378 20-02-13-02-01416 0269 E4P-C-05009 20-07-10-02-00026 0836 21-02-08-02-00102 1370 20-02-13-02-01417 0298 20-07-10-02-00027 0852 E4-A-05092 21-02-08-02-00103 1500 20-02-13-02-01418 0426 E4-C-05125 20-07-10-02-00028 0724 21-02-08-02-00104 1338 E4-A-06086 20-02-13-02-01419 0405 20-07-10-02-00029 0733 21-02-08-02-00105 1398 E4-A-06083 20-02-13-02-01420 0310 20-07-10-02-00030 0873 E4P-C-00224 21-02-08-02-00106 1336 E4-C-06065 20-02-13-02-01421 0318 E4-A-05077 20-07-10-02-00031 1085 21-02-08-02-00107 1419 E4-B-06001 20-02-13-02-01422 0292 20-07-10-02-00032 0942 21-02-08-02-00108 1411 20-02-13-02-01423 0325 20-07-10-02-00033 1153 21-02-08-02-00109 1463 20-02-13-02-01424 0511 20-07-10-02-00034 0832 21-02-08-02-00110 1426 E4-A-06077 20-02-13-02-01425 0307 E4-A-00397 20-07-10-02-00035 0929 21-02-08-02-00111 1399 20-02-13-02-01426 0527 20-07-10-02-00036 0703 21-02-08-02-00112 1328 20-02-13-02-01427 0302 E4-C-05122 20-07-10-02-00037 0948 E4-A-06036 21-02-08-02-00113 1427 20-02-13-02-01428 0316 20-07-10-02-00038 0860 E4-C-00122 21-02-08-02-00114 1523 E4-C-00473 20-02-13-02-01429 0401 E4-C-06001 20-07-10-02-00039 0821 21-02-08-02-00115 1191 20-02-13-02-01430 0347 E4-C-00218 20-07-10-02-00040 1310 21-02-08-02-00116 1352 20-02-13-02-01431 0394 20-07-10-02-00041 1158 E4-A-00066 21-02-08-02-00117 1417 20-02-13-02-01432 0352 E4-A-00037 20-07-10-02-00042 0930 21-02-08-02-00118 1429 20-02-13-02-01433 0285 20-07-10-02-00043 0877 21-02-08-02-00119 1424 20-02-13-02-01434 0289 20-07-10-02-00044 1151 21-02-08-02-00120 1192 20-02-13-02-01435 0301 E4P-C-05010 20-07-10-02-00045 0917 E4-A-00116 21-02-08-02-00121 1469 E4-C-06070 20-02-13-02-01436 0388 20-07-10-02-00046 0878 E4P-C-05013 21-02-08-02-00122 1447 20-02-13-02-01437 0295 20-07-10-02-00047 0788 21-02-08-02-00123 1484 20-02-13-02-01438 0397 E4-C-05114 20-07-10-02-00048 1132 21-02-08-02-00124 1177 20-02-13-02-01439 0234 20-07-10-02-00049 1141 21-02-08-02-00125 1364 20-02-13-02-01440 0303 E4P-C-05006 20-07-10-02-00050 1170 21-02-08-02-00126 1396 E4-A-00455 20-02-13-02-01441 0343 20-07-10-02-00051 1184 21-02-08-02-00127 1379 20-02-13-02-01442 0373 20-07-10-02-00052 1122 E4-C-06044 21-02-08-02-00128 1348 20-02-13-02-01443 0353 E4-A-05090 20-07-10-02-00053 1109 21-02-08-02-00129 1321 20-02-13-02-01444 0320 E4-C-05120 20-07-10-02-00054 1155 21-02-08-02-00130 1451 E4-A-00532 20-02-13-02-01445 0354 20-07-10-02-00055 1058 21-02-08-02-01548 1179 20-02-13-02-01446 0502 20-07-10-02-00056 1147 21-02-08-02-01549 1477 20-02-13-02-01447 0321 20-07-10-02-00057 1144 21-02-08-02-01550 1515 20-02-13-02-01448 0300 E4-A-00266 20-07-10-02-00058 1121 21-02-08-08-00014 1476 E4-C-06073 20-02-13-02-01449 0337 20-07-10-02-00059 1126 E4-A-00485 21-02-08-08-00090 1496 20-02-13-02-01450 0281 20-07-10-02-00060 1133 21-03-03-02-02275 1533 20-02-13-02-01451 0396 E4-A-05076 20-07-10-02-00061 1095 21-03-03-02-02276 1478 20-02-13-02-01452 0392 E4-C-05121 20-07-10-02-00062 1098 21-03-03-02-02277 1837 20-02-13-02-01453 0507 20-07-10-02-00063 1148 21-03-03-02-02278 1485 20-02-13-02-01454 0328 20-07-10-02-00064 1161 E4-C-06035 21-03-03-02-02279 1517 20-02-13-02-01455 0290 20-07-10-02-00065 1136 21-03-03-02-02280 1487 20-02-13-02-01456 0349 E4-A-00079 20-07-10-02-00066 1130 21-03-03-02-02281 1547 20-02-13-02-01457 0390 E4-C-00233 20-07-10-02-00067 1125 E4P-C-06026 21-03-03-02-02282 1503 20-02-13-02-01458 0294 20-07-10-02-00068 1152 21-03-03-02-02283 1499 20-02-13-02-01459 0339 20-07-10-02-00069 1096 E4-A-06059 21-03-03-02-02284 1543 20-02-13-02-01460 0441 20-07-10-02-00070 1110 21-03-03-02-02285 1544 20-02-13-02-01461 0291 20-07-10-02-00071 1294 21-03-03-02-02286 1498 ### Page 6 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 6-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N 20-02-13-02-01462 0336 20-07-10-02-00072 1143 21-03-03-02-02287 1467 20-02-13-02-01463 0277 E4-B-00110 20-07-10-02-00073 1140 E4-A-06065 21-03-03-02-02288 1542 20-02-13-02-01464 0406 E4P-C-05012 20-07-10-02-00074 1173 21-03-03-02-02289 1534 20-02-13-02-01465 0461 20-07-10-02-00075 1138 21-03-03-02-02290 1483 20-02-13-02-01466 0293 E4-C-05118 20-07-10-02-00076 1171 21-03-03-02-02291 1536 20-02-13-02-01467 0503 20-07-10-02-00077 1040 21-03-03-02-02292 1481 20-02-13-02-01468 0530 20-07-10-02-00079 1119 E4-A-06058 21-03-03-02-02293 1491 E4-C-06071 20-02-13-02-01470 0379 20-07-10-02-00080 1280 E4-A-06057 21-03-03-02-02294 1504 20-02-13-02-01471 0299 E4-C-05123 20-07-10-02-00081 1118 21-03-03-02-02295 1501 20-02-13-02-01472 0287 20-07-10-02-00082 1088 21-03-03-02-02296 1525 20-02-13-02-01473 0453 20-07-10-02-00083 1188 21-03-03-02-02297 1490 20-02-13-02-01474 0423 20-07-10-02-00084 1305 21-03-03-02-02298 1518 20-02-13-02-01475 0540 20-07-10-02-00085 1102 21-03-03-02-02299 1521 E4P-C-00066 20-02-13-02-01476 0395 20-07-10-02-00086 1181 E4-C-06046 21-03-03-02-02300 1497 20-02-13-02-01477 0440 20-07-10-02-00088 1180 21-03-03-02-02302 1751 20-02-13-02-01478 0444 20-07-10-02-00090 1183 E4-A-06052 21-03-03-02-02303 1699 20-02-13-02-01479 0476 20-07-10-02-00091 1304 E4P-C-06031 21-03-03-02-02304 1527 E4-C-00018 20-02-13-02-01480 0486 20-08-21-02-00582 1149 21-03-03-02-02305 1468 20-02-13-02-01481 0439 20-08-21-02-00583 1162 21-03-03-02-02306 1489 20-02-13-02-01482 0497 E4-A-06008 20-08-21-02-00584 1123 21-03-03-02-02307 1466 20-02-13-02-01483 0449 20-08-21-02-00585 1150 21-03-03-02-02308 1482 20-02-13-02-01484 0542 20-08-21-02-00586 1104 21-03-03-02-02309 1505 20-02-13-02-01485 0450 20-08-21-02-00587 1366 E4-C-06066 21-03-03-02-02310 1522 20-02-13-02-01486 0446 20-08-21-02-00588 1253 21-03-03-02-02311 1519 E4-A-06102 20-02-13-02-01487 0462 20-08-21-02-00589 1117 21-03-03-02-02312 1539 20-02-13-02-01488 0536 20-08-21-02-00590 1107 21-03-03-02-02313 1725 20-02-13-02-01489 0454 20-08-21-02-00591 1176 21-03-03-02-02314 1492 20-02-13-02-01490 0531 20-08-21-02-00592 0686 E4-A-06014 21-03-03-02-02315 1546 20-02-13-02-01491 0445 20-08-21-02-00594 1203 21-03-03-02-02316 1524 20-02-13-02-01492 0428 20-08-21-02-00595 1189 21-03-03-02-02317 1502 20-02-13-02-01493 0524 20-08-21-02-00596 1083 21-03-03-02-02318 1516 20-02-13-02-01494 0491 20-08-21-02-00597 1137 21-03-03-02-02319 1510 20-02-13-02-01495 0504 20-08-21-02-00598 1124 21-03-03-02-02320 1475 20-02-13-02-01496 0547 20-08-21-02-00599 1175 21-03-03-02-02321 1701 20-02-13-02-01497 0520 20-08-21-02-00600 1160 21-03-03-02-02322 1443 20-02-13-02-01498 0455 E4-A-06010 20-08-21-02-00601 1142 21-03-03-02-02323 1512 E4-C-00119 20-02-13-02-01499 0487 20-08-21-02-00602 1185 21-03-03-02-02325 1538 E4-A-00660 20-02-13-02-01500 0479 20-08-21-02-00603 0779 21-03-03-02-02326 1514 20-02-13-02-01501 0422 20-08-21-02-00604 1084 21-03-03-02-02327 1526 E4-B-00063 20-02-13-02-01502 0432 20-08-21-02-00605 1135 21-03-03-02-02328 1700 20-02-13-02-01503 0559 20-08-21-02-00606 1187 21-03-03-02-02329 1545 20-02-13-02-01504 0556 20-08-21-02-00607 1156 21-03-03-02-02330 1556 20-02-13-02-01505 0528 20-08-21-02-00608 1241 E4P-C-06029 21-03-03-02-02331 1530 20-02-13-02-01506 0452 E4-A-06006 20-08-21-02-00609 1129 21-03-03-02-02332 1509 E4-A-00018 20-02-13-02-01507 0489 20-08-21-02-00610 1097 21-03-03-02-02333 1513 20-02-13-02-01508 0317 20-08-21-02-00611 1157 21-03-03-02-02334 1508 20-02-13-02-01509 0529 E4-A-06011 20-08-21-02-00612 1086 21-03-03-02-02335 1697 20-02-13-02-01510 0631 20-08-21-02-00613 1146 21-03-03-02-02336 1520 20-02-13-02-01511 0451 20-08-21-02-00614 1145 21-03-03-02-02337 1537 20-02-13-02-01512 0472 E4-A-06009 20-08-21-02-00615 1120 21-03-03-02-02339 1528 20-02-13-02-01513 0600 20-08-21-02-00616 1174 21-03-03-02-02340 1578 20-02-14-02-00084 1494 E4P-C-06051 20-08-21-02-00617 1139 21-03-03-02-02341 1548 20-03-04-02-00003 0563 20-08-21-02-00618 1087 21-03-03-02-02342 1565 20-03-04-02-00004 0460 20-08-21-02-00619 1099 21-03-03-02-02343 1726 20-03-04-02-00005 0435 20-08-21-02-00620 1131 21-03-03-02-02344 1569 20-03-04-02-00006 0538 20-08-21-02-00621 1186 E4-C-00182 21-03-03-02-02345 1571 20-03-04-02-00007 0434 20-08-21-02-00622 1223 E4-A-00216 21-03-03-02-02346 1511 E4-C-00088 20-03-04-02-00008 0311 20-08-21-02-00623 1108 21-03-03-02-02347 1665 20-03-04-02-00009 0463 20-08-21-02-00624 1306 E4-C-06037 21-03-03-02-02349 1541 20-03-04-02-00010 0344 20-08-21-02-00625 1200 21-03-03-02-02350 1550 E4-A-06100 20-03-04-02-00011 0346 E4-C-06005 20-08-21-02-00626 1182 E4-C-06047 21-03-03-02-02351 1480 20-03-04-02-00012 0387 20-08-21-02-00627 1245 E4-C-06041 21-03-03-02-02352 1748 20-03-04-02-00013 0447 20-08-21-02-00628 1312 21-03-03-02-02353 1531 20-03-04-02-00014 0492 20-08-21-02-00629 1071 21-03-03-02-02354 1554 20-03-04-02-00015 0465 20-08-21-02-00630 1159 21-03-03-02-02355 1618 ### Page 7 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 7-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N 20-03-04-02-00016 0357 20-08-21-02-00631 1172 E4-A-06050 21-03-03-02-02356 1576 20-03-04-02-00017 0420 E4-C-06003 20-08-21-02-00632 1134 21-03-03-02-02357 1486 20-03-04-02-00018 0433 20-08-21-02-00633 1239 21-03-03-02-02358 1568 20-03-04-02-00019 0309 20-08-21-02-00634 1365 E4-A-00603 21-03-03-02-02359 1580 20-03-04-02-00020 0391 20-08-21-02-00635 1444 21-03-03-02-02360 1507 20-03-04-02-00021 0424 E4-C-06004 20-08-21-02-00636 0814 21-03-03-02-02361 1567 20-03-04-02-00022 0570 20-08-21-02-00637 1266 21-03-03-02-02362 1638 20-03-04-02-00023 0430 20-08-21-02-00638 1164 21-03-03-02-02363 1586 20-03-04-02-00024 0305 20-08-21-02-00639 1248 E4-C-06048 21-03-03-02-02364 1470 20-03-04-02-00025 0398 E4-C-06006 20-08-21-02-00640 1232 E4P-C-06044 21-03-03-02-02365 1577 E4-C-06077 20-03-04-02-00026 0322 20-08-21-02-00641 1218 21-03-03-02-02366 1473 20-03-04-02-00027 0484 20-08-21-02-00642 1197 E4-C-00042 21-03-03-02-02367 1558 20-03-04-02-00029 0323 E4-C-06002 20-08-21-02-00643 1438 E4P-C-00069 21-03-03-02-02369 1555 20-03-04-02-00030 0417 20-08-21-02-00644 1195 21-03-03-02-02370 1823 20-03-04-02-00031 0403 E4-A-06001 20-08-21-02-00645 1262 E4-A-00491 21-03-03-02-02371 1559 20-03-04-02-00032 0490 20-08-21-02-00646 1257 21-03-03-02-02372 1579 20-03-04-02-00033 0096 20-08-21-02-00647 0834 21-03-03-02-02373 1440 E4-A-06097 20-03-04-02-00034 0313 20-08-21-02-00648 1231 21-03-03-02-02374 1692 20-03-04-02-00035 0342 20-08-21-02-00649 1267 E4-A-06053 21-03-03-02-02375 1573 20-03-04-02-00036 0308 20-08-21-02-00650 1212 21-03-03-02-02376 1549 20-03-04-02-00037 0418 20-08-21-02-00651 1235 21-03-03-02-02377 1647 20-03-04-02-00038 0400 E4-C-05124 20-08-21-02-00652 1226 E4-A-00244 21-03-03-02-02379 1582 E4P-C-06053 20-03-04-02-00039 0500 E4P-C-06012 20-08-21-02-00653 1369 21-03-03-02-02380 1560 20-03-04-02-00040 0535 E4P-C-06006 20-08-21-02-00654 1351 E4-C-00118 21-03-03-02-02381 1428 E4-A-06089 20-03-04-02-00041 0437 20-08-21-02-00655 1385 E4-C-00243 21-03-03-02-02382 1574 20-03-04-02-00042 0543 20-08-21-02-00656 0747 21-03-03-02-02384 1563 20-03-04-02-00043 0473 20-08-21-02-00657 1264 E4-A-06064 21-03-03-02-02385 1441 20-03-04-02-00044 0494 E4-C-06007 20-08-21-02-00659 1222 E4-C-06060 21-03-03-02-02386 1358 E4-A-06098 20-03-04-02-00045 0340 20-08-21-02-00660 1208 21-03-03-02-02387 1506 20-03-04-02-00046 0515 20-08-21-02-00661 1390 E4-C-06069 21-03-03-02-02388 1589 E4-C-06075 20-03-04-02-00047 0498 20-08-21-02-00662 1255 E4-A-06072 21-03-03-02-02389 1572 E4-C-06080 20-03-04-02-00048 0588 20-08-21-02-00663 1388 E4-A-00514 21-03-03-02-02390 1581 20-03-04-02-00049 0478 20-08-21-02-00664 1290 E4-C-06051 21-03-03-02-02391 1551 20-03-04-02-00050 0541 20-08-21-02-00665 1225 E4-A-06074 21-03-03-02-02392 1557 E4P-C-06054 20-03-04-02-00051 0448 E4P-C-06002 20-08-21-02-00666 1391 E4-A-00192 21-03-03-02-02393 1474 20-03-04-02-00052 0519 E4-A-06003 20-08-21-02-00667 1215 21-03-03-02-02394 1564 E4P-C-06052 20-03-04-02-00053 0495 20-08-21-02-00668 1299 E4P-C-06036 21-03-03-02-02395 1540 20-03-04-02-00054 0483 20-08-21-02-00669 1193 21-03-03-02-02396 1553 20-03-04-02-00055 0389 20-08-21-02-00670 1361 21-03-03-02-02397 1561 20-03-04-02-00057 0518 20-08-21-02-00671 1300 E4P-C-06037 21-03-03-02-02398 1488 20-03-04-02-00058 0506 20-08-21-02-00672 1219 21-03-03-02-02399 1456 20-03-04-02-00059 0505 20-08-21-02-00673 1198 21-03-03-02-02400 1657 20-03-04-02-00060 0464 20-08-21-02-00674 1213 E4-C-06063 21-03-03-02-02401 1706 20-03-04-02-00061 0456 E4-A-06005 20-08-21-02-00675 1196 21-03-03-02-02402 1713 20-03-04-02-00062 0499 20-08-21-02-00676 1362 E4P-C-06045 21-03-03-02-02403 1840 20-03-04-02-00063 0532 20-08-21-02-00677 1354 21-03-03-02-02404 1907 20-03-04-02-00064 0436 E4P-C-06003 20-08-21-02-00678 1291 E4-A-06056 21-03-03-02-02405 1810 20-03-04-02-00065 0427 20-08-21-02-00679 1249 21-03-03-02-02406 1828 20-03-04-02-00066 0493 E4-A-06012 20-08-21-02-00680 1263 21-03-03-02-02407 1752 20-03-04-02-00068 0564 20-08-21-02-00681 1313 21-03-03-02-02408 1325 20-03-04-02-00071 0458 E4P-C-06005 20-08-21-02-00682 1216 21-03-03-02-02409 1829 20-03-04-02-00072 0474 20-08-21-02-00683 1347 21-03-03-02-02410 1822 20-03-04-02-00073 0513 E4-A-06007 20-08-21-02-00684 1381 21-03-03-02-02411 1707 20-03-04-02-00074 0534 20-08-21-02-00685 1259 E4-C-06040 21-03-03-02-02412 1742 20-03-04-02-00075 0533 E4P-C-06004 20-08-21-02-00686 1311 E4-A-06066 21-03-03-02-02414 1850 20-03-04-02-00076 0508 E4P-C-06001 20-08-21-02-00687 1227 E4P-C-06043 21-03-03-02-02415 1562 20-03-04-02-00078 0501 20-08-21-02-00688 1281 21-03-03-02-02416 1841 20-03-04-02-00079 0610 E4-A-06017 20-08-21-02-00689 1271 21-03-03-02-02417 1658 20-03-04-02-00081 0481 20-08-21-02-00690 0581 21-03-03-02-02418 1629 20-03-04-02-00082 0509 20-08-21-02-00691 1279 E4-A-06063 21-03-03-02-02419 1813 20-03-04-02-00083 0488 E4-A-06002 20-08-21-02-00692 1254 E4-C-06045 21-04-08-02-00592 1722 20-03-04-02-00085 0438 20-08-21-02-00693 1258 21-04-08-02-00593 1610 20-03-04-02-00086 0517 E4-A-06004 20-08-21-02-00694 1283 21-04-08-02-00594 1671 20-03-04-02-00088 0521 20-08-21-02-00695 1277 E4-A-06070 21-04-08-02-00595 1593 20-03-04-02-00089 0457 20-08-21-02-00696 1238 E4-C-00138 21-04-08-02-00596 1591 ### Page 8 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 8-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N 20-03-04-02-00091 0526 20-08-21-02-00697 1261 21-04-08-02-00597 1724 20-03-31-02-00182 0624 20-08-21-02-00698 0824 21-04-08-02-00598 1769 20-03-31-02-00183 0681 20-08-21-02-00699 1302 E4P-C-06039 21-04-08-02-00599 1702 20-03-31-02-00184 0568 20-08-21-02-00700 1307 E4-C-06039 21-04-08-02-00600 1597 20-03-31-02-00185 0525 20-08-21-02-00701 1284 E4P-C-06035 21-04-08-02-00601 1602 20-03-31-02-00186 0687 20-08-21-02-00702 1252 E4-B-00202 21-04-08-02-00602 1603 20-03-31-02-00187 0584 20-08-21-02-00703 1268 21-04-08-02-00603 1614 E4-A-06104 20-03-31-02-00188 0689 20-08-21-02-00704 1244 E4-A-06069 21-04-08-02-00604 1672 20-03-31-02-00189 0576 20-08-21-02-00705 1296 E4-A-06071 21-04-08-02-00605 1640 20-03-31-02-00190 0609 20-08-21-02-00706 1276 21-04-08-02-00606 1599 20-03-31-02-00191 0605 20-08-21-02-00707 1247 21-04-08-02-00607 1694 20-03-31-02-00192 0618 20-08-21-02-00708 1240 21-04-08-02-00608 1595 20-03-31-02-00193 0679 E4P-C-06007 20-08-21-02-00709 1275 21-04-08-02-00609 1617 20-03-31-02-00194 0663 20-08-21-02-00710 1251 21-04-08-02-00610 1611 20-03-31-02-00195 0596 20-08-21-02-00711 1287 E4-A-06062 21-04-08-02-00611 1656 20-03-31-02-00196 0655 20-08-21-02-00712 1272 21-04-08-02-00612 1728 20-03-31-02-00197 0475 20-08-21-02-00713 1297 21-04-08-02-00613 1605 20-03-31-02-00198 0636 20-08-21-02-00714 1242 21-04-08-02-00614 1757 20-03-31-02-00199 0695 E4-A-00498 20-08-21-02-00715 1295 E4-C-06038 21-04-08-02-00615 1826 20-03-31-02-00200 0551 20-08-21-02-00716 1289 21-04-08-02-00616 1649 20-03-31-02-00201 0552 E4-A-06015 20-08-21-02-00717 0691 21-04-08-02-00617 1880 20-03-31-02-00202 0546 20-08-21-02-00718 1303 E4P-C-06034 21-04-08-02-00618 1607 20-03-31-02-00203 0672 20-08-21-02-00719 0799 21-04-08-02-00619 1807 20-03-31-02-00204 0482 20-08-21-02-00720 0818 21-04-08-02-00620 1613 20-03-31-02-00205 0567 20-08-21-02-00721 1314 E4-C-06052 21-04-08-02-00621 1612 20-03-31-02-00206 0649 20-08-21-02-00722 0735 21-04-08-02-00622 1616 20-03-31-02-00207 0677 20-08-21-02-00723 0808 21-04-08-02-00623 1767 20-03-31-02-00208 0512 20-08-21-02-00724 0757 21-04-08-02-00624 1723 20-03-31-02-00209 0587 20-08-21-02-00725 0574 E4P-C-00051 21-04-08-02-00625 1721 20-03-31-02-00210 0560 20-08-21-02-00726 0709 21-04-08-02-00626 1598 20-03-31-02-00211 0562 20-09-02-02-00424 0657 21-04-08-02-00627 1625 20-03-31-02-00212 0952 20-09-02-02-00425 0774 21-04-08-02-00628 1639 20-03-31-02-00213 0659 20-09-02-02-00426 0776 21-04-08-02-00629 1729 20-03-31-02-00214 0660 20-09-02-02-00427 0787 E4-A-06029 21-04-08-02-00630 1615 20-03-31-02-00216 0601 20-09-02-02-00428 0590 21-04-08-02-00631 1667 20-03-31-02-00217 0586 20-09-02-02-00429 0620 E4-A-06023 21-04-08-02-00632 1825 20-03-31-02-00218 0459 20-09-02-02-00430 0640 E4-B-00297 21-04-08-02-00633 1583 20-03-31-02-00219 0565 20-09-02-02-00431 0578 E4-A-00046 21-04-08-02-00634 1645 20-03-31-02-00220 0558 20-09-02-02-00433 0823 21-04-08-02-00635 1594 20-03-31-02-00221 0684 20-09-02-02-00434 0764 21-04-08-02-00636 1716 20-03-31-02-00222 0654 20-09-02-02-00435 0817 21-04-08-02-00637 1628 20-03-31-02-00223 0595 20-09-02-02-00436 0604 E4-C-06011 21-04-08-02-00638 1646 20-03-31-02-00224 0553 20-09-02-02-00437 0665 21-04-08-02-00639 1584 20-03-31-02-00225 0544 20-09-02-02-00438 0648 E4-A-06028 21-04-08-02-00640 1689 20-03-31-02-00226 0656 20-09-02-02-00439 1980 21-04-08-02-00641 1596 20-03-31-02-00227 0575 20-09-02-02-00440 0616 21-04-08-02-00644 1703 20-03-31-02-00228 0642 20-09-02-02-00441 0786 21-04-08-02-00645 1630 20-03-31-02-00229 0617 20-09-02-02-00442 0573 21-04-08-02-00646 1674 20-03-31-02-00230 0599 20-09-02-02-00443 0838 21-04-08-02-00647 1680 20-03-31-02-00231 0666 20-09-02-02-00444 0855 21-04-08-02-00648 1746 20-03-31-02-00232 0580 20-09-02-02-00445 0545 E4-B-00433 21-04-08-02-00649 1623 20-03-31-02-00233 0592 20-09-02-02-00446 0628 21-04-08-02-00650 1749 20-03-31-02-00234 0572 20-09-02-02-00447 0615 E4-B-00417 21-04-08-02-00652 1727 20-03-31-02-00235 0904 E4P-C-06018 20-09-02-02-00448 0662 E4-A-06026 21-04-08-02-00653 1740 20-03-31-02-00236 0971 E4-A-06041 20-09-02-02-00449 0591 E4-C-00092 21-04-08-02-00654 1609 20-03-31-02-00237 0549 20-09-02-02-00450 0772 21-04-08-02-00655 1720 20-03-31-02-00238 0594 20-09-02-02-00451 0804 21-04-08-02-00656 1624 20-03-31-02-00239 0569 20-09-02-02-00452 0626 E4-A-06019 21-04-08-02-00657 1608 20-03-31-02-00240 0668 20-09-02-02-00453 0740 21-04-08-02-00658 1675 20-03-31-02-00241 0692 20-09-02-02-00454 0742 21-04-08-02-00659 1676 20-03-31-02-00242 0496 20-09-02-02-00455 0554 E4-A-06018 21-04-08-02-00660 1604 20-03-31-02-00243 0676 20-09-02-02-00456 0694 21-04-08-02-00661 1641 20-03-31-02-00244 0693 20-09-02-02-00457 0612 E4-A-00111 21-04-08-02-00662 1759 20-03-31-02-00245 0566 20-09-02-02-00458 0763 21-04-08-02-00663 1683 20-03-31-02-00246 0593 E4-A-00219 20-09-02-02-00459 0579 E4-C-06009 21-04-08-02-00664 1670 ### Page 9 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 9-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N 20-03-31-02-00248 0653 20-09-02-02-00460 0791 21-04-08-02-00665 1648 20-03-31-02-00249 0614 E4-C-00069 20-09-02-02-00461 0765 21-04-08-02-00666 1606 20-03-31-02-00250 0619 E4-C-00172 20-09-02-02-00462 0606 E4-C-06012 21-04-08-02-00667 1622 20-03-31-02-00251 0669 20-09-02-02-00463 0607 E4-A-06020 21-04-08-02-00668 1696 20-03-31-02-00252 0635 20-09-02-02-00464 0627 21-04-08-02-00669 1650 20-03-31-02-00253 0638 20-09-02-02-00465 0746 21-04-08-02-00670 1621 20-03-31-02-00254 0637 E4-A-06022 20-09-02-02-00466 0775 E4-A-00484 21-04-08-02-00671 1642 20-03-31-02-00255 0608 20-09-02-02-00467 0767 21-04-08-02-00672 1636 20-03-31-02-00256 0442 20-09-02-02-00468 0623 E4-C-00171 21-04-08-02-00673 1654 20-03-31-02-00257 0645 E4-A-00509 20-09-02-02-00469 0621 E4-A-06027 21-04-08-02-00674 1669 20-03-31-02-00258 0744 20-09-02-02-00470 0597 21-04-08-02-00675 1753 20-03-31-02-00259 0598 E4-C-06014 20-09-02-02-00471 0603 21-04-08-02-00676 1686 20-03-31-02-00260 0634 20-09-02-02-00472 0646 E4-A-00106 21-04-08-02-00677 1859 20-03-31-02-00261 0688 20-09-02-02-00473 0633 21-04-08-02-00678 1634 20-03-31-02-00262 0555 E4-A-06016 20-09-02-02-00474 0613 21-04-08-02-00679 1698 20-03-31-02-00263 0651 20-09-02-02-00475 0678 E4-A-00107 21-04-08-02-00680 1718 20-03-31-02-00264 0795 E4-A-05097 20-09-02-02-00476 0745 21-04-08-02-00681 1619 20-03-31-02-00265 0658 20-09-02-02-00477 0753 21-04-08-02-00682 1652 20-03-31-02-00266 0611 20-09-02-02-00478 0800 21-04-08-02-00683 1687 20-03-31-02-00267 0602 E4-C-06013 20-09-02-02-00479 0630 21-04-08-02-00684 1708 20-03-31-02-00268 0582 20-09-02-02-00480 0847 21-04-08-02-00685 1661 20-03-31-02-00269 0675 E4-C-06015 20-09-02-02-00481 0809 21-04-08-02-00686 1803 20-03-31-02-00270 0583 20-09-02-02-00482 0785 21-04-08-02-00687 1693 20-03-31-02-00271 0773 20-09-02-02-00483 0835 21-04-08-02-00688 1704 20-03-31-02-00272 0819 20-09-02-02-00484 0652 E4-C-06008 21-04-08-02-00689 1750 20-03-31-02-00273 0643 20-09-02-02-00485 0667 21-04-08-02-00690 1651 20-03-31-02-00274 0777 20-09-02-02-00486 0670 21-04-08-02-00691 1865 20-03-31-02-00275 0577 20-09-02-02-00487 0706 21-04-08-02-00692 1802 20-03-31-02-00276 0816 20-09-02-02-00488 0650 21-04-08-02-00693 1856 20-03-31-02-00277 0728 20-09-02-02-00489 0768 21-04-08-02-00694 1643 20-03-31-02-00278 0685 E4-C-00480 20-09-02-02-00490 0680 21-04-08-02-00695 1644 20-03-31-02-00279 0831 20-09-02-02-00491 0673 21-04-08-02-00696 1710 20-03-31-02-00280 0794 20-09-02-02-00492 0589 E4-C-06010 21-04-08-02-00697 1620 20-03-31-02-00281 0811 20-09-02-02-00493 0829 21-04-08-02-00698 1715 20-03-31-02-00282 0845 20-09-02-02-00494 0807 21-04-08-02-00699 1673 20-03-31-02-00283 0731 20-09-02-02-00495 0784 21-04-08-02-00700 1601 20-03-31-02-00284 0771 20-09-02-02-00496 0629 21-04-08-02-00701 1758 20-03-31-02-00285 0707 20-09-02-02-00497 0754 21-04-08-02-00702 1679 20-03-31-02-00286 0727 20-09-02-02-00498 0682 E4-A-00166 21-04-08-02-00703 1877 20-03-31-02-00287 0790 20-09-02-02-00499 0782 21-04-08-02-00704 1668 20-03-31-02-00288 0853 20-10-19-02-00442 1853 21-04-08-02-00705 1739 20-03-31-02-00289 0696 E4-A-05094 20-10-19-02-00443 1814 21-04-08-02-00706 1886 20-03-31-02-00290 0778 20-10-19-02-00444 1878 21-04-08-02-00707 1868 20-03-31-02-00291 0760 20-10-19-02-00445 1872 21-04-08-02-00708 1632 20-03-31-02-00292 0846 20-10-19-02-00446 1875 21-04-08-02-00709 1627 20-03-31-02-00293 0770 E4-A-00028 20-10-19-02-00447 1918 21-04-08-02-00710 1754 20-03-31-02-00294 0751 20-10-19-02-00448 1780 21-04-08-02-00711 1660 20-03-31-02-00295 0761 20-10-19-02-00449 1815 21-04-08-02-00712 1705 20-03-31-02-00296 0759 20-10-19-02-00450 1787 21-04-08-02-00713 1631 20-03-31-02-00297 0755 20-10-19-02-00452 1793 21-04-08-02-00714 1857 20-03-31-02-00298 0725 20-10-19-02-00453 1889 21-04-08-02-00715 1685 20-03-31-02-00299 0812 20-10-19-02-00454 1854 21-04-08-02-00716 1653 20-03-31-02-00300 0797 20-10-19-02-00455 1792 21-04-08-02-00717 1677 20-03-31-02-00301 0851 20-10-19-02-00456 1809 21-04-08-02-00718 1760 20-03-31-02-00302 0737 20-10-19-02-00457 1796 21-04-08-02-00719 1678 20-03-31-02-00303 0828 20-10-19-02-00458 1778 21-04-08-02-00720 1862 20-03-31-02-00304 0705 20-10-19-02-00459 1827 21-04-08-02-00721 1695 20-03-31-02-00305 0739 20-10-19-02-00460 1926 21-04-08-02-00722 1908 20-03-31-02-00306 0842 20-10-19-02-00461 1979 21-04-08-02-00723 1911 20-03-31-02-00307 0822 E4-B-00173 20-10-19-02-00462 1777 21-04-08-02-00724 1794 20-03-31-02-00308 0780 20-10-19-02-00463 0919 21-04-08-02-00725 1684 20-03-31-02-00309 0781 20-10-19-02-00464 0940 E4-A-00038 21-04-08-02-00726 1633 20-03-31-02-00310 0796 20-10-19-02-00465 1805 21-04-08-02-00727 1784 20-03-31-02-00311 0801 20-10-19-02-00466 1981 21-04-08-02-00728 1883 20-03-31-02-00312 0708 20-10-19-02-00467 1975 21-04-08-02-00729 1871 ### Page 10 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 10-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N 20-03-31-02-00313 0826 20-10-19-02-00468 1786 21-04-08-02-00730 1804 20-03-31-02-00314 0726 20-10-19-02-00469 1819 21-04-08-02-00731 1783 20-03-31-02-00315 0700 20-10-19-02-00470 1869 21-04-08-02-00732 1768 20-03-31-02-00316 0749 20-10-19-02-00471 1866 21-04-08-02-00733 1682 20-05-14-02-00002 0922 20-10-19-02-00472 1293 E4P-C-06032 21-04-08-02-00734 1776 20-05-14-02-00003 0875 20-10-19-02-00473 1308 E4-A-06054 21-04-08-02-00735 1788 20-05-14-02-00004 0935 20-10-19-02-00474 1199 21-04-08-02-00736 1655 20-05-14-02-00005 0879 E4-A-06043 20-10-19-02-00475 1800 21-05-10-02-00002 1711 20-05-14-02-00006 0905 E4P-C-06016 20-10-19-02-00477 1915 21-05-10-02-00003 1876 20-05-14-02-00007 0934 20-10-19-02-00478 1906 21-05-10-02-00004 1712 20-05-14-02-00008 0933 20-10-19-02-00479 1863 21-05-10-02-00006 1719 20-05-14-02-00009 0965 20-10-19-02-00480 1782 21-05-10-02-00008 1761 20-05-14-02-00010 0884 E4-A-06045 20-10-19-02-00481 1860 21-05-10-02-00012 1663 20-05-14-02-00011 0908 E4-A-00239 20-10-19-02-00482 1939 21-05-10-02-00013 1893 20-05-14-02-00012 0949 E4-C-06022 20-10-19-02-00485 1808 21-05-10-02-00016 1833 20-05-14-02-00013 0954 E4-A-06037 20-10-19-02-00486 1798 21-05-10-02-00018 1900 20-05-14-02-00014 0928 E4P-C-06015 20-10-19-02-00487 0881 21-05-10-02-00019 1662 20-05-14-02-00015 0962 20-10-19-02-00488 1774 21-05-10-02-00020 1894 20-05-14-02-00016 0955 20-10-19-02-00489 1943 21-05-10-02-00021 1842 20-05-14-02-00017 0959 20-10-19-02-00490 1995 21-05-10-02-00023 1836 20-05-14-02-00018 0932 20-10-19-02-00491 1884 21-05-10-02-00024 1896 20-05-14-02-00019 0906 E4-C-06025 20-10-19-02-00492 0883 E4-A-00019 21-05-10-02-00025 1905 20-05-14-02-00020 0972 20-10-19-02-00493 0886 E4-A-06032 21-05-10-02-00026 1897 20-05-14-02-00021 0874 E4-B-00434 20-10-19-02-00494 0888 21-05-10-02-00031 1892 20-05-14-02-00022 0920 E4-A-06040 20-10-19-02-00495 0865 E4-A-05096 21-05-10-02-00034 1795 20-05-14-02-00023 0938 E4P-C-06021 20-10-19-02-00496 0926 21-05-10-02-00038 1912 20-05-14-02-00024 0899 20-10-19-02-00497 0702 E4-A-05095 21-05-10-02-00043 1763 20-05-14-02-00025 0988 20-10-19-02-00498 1948 21-05-10-02-00047 1831 20-05-14-02-00026 0903 20-10-19-02-00499 0916 E4-A-06034 21-05-10-02-00048 1733 20-05-14-02-00027 0957 20-10-19-02-00500 0915 E4-A-00434 21-05-10-02-00050 1744 20-05-14-02-00028 0876 20-10-19-02-00501 0880 E4P-C-06009 21-05-10-02-00052 1635 20-05-14-02-00029 0978 E4-A-06042 20-10-19-02-00502 0701 21-05-10-02-00053 1910 20-05-14-02-00030 1005 20-10-19-02-00503 0872 21-05-10-02-00054 1891 20-05-14-02-00031 0951 20-10-19-02-00504 0896 E4-C-06017 21-05-10-02-00056 1709 20-05-14-02-00032 0969 E4-C-06023 20-10-19-02-00505 1789 21-05-10-02-00057 1824 20-05-14-02-00033 0961 E4-C-06028 20-10-19-02-00506 0894 E4P-C-06014 21-05-10-02-00058 1770 20-05-14-02-00034 0950 20-10-19-02-00507 0925 E4P-C-06013 21-05-10-02-00059 1755 20-05-14-02-00035 0909 E4-C-00312 20-10-19-02-00508 0907 E4-C-06016 21-05-10-02-00060 1681 20-05-14-02-00036 0921 E4-C-06021 20-10-19-02-00510 0939 E4-B-00109 21-05-10-02-00062 1747 20-05-14-02-00037 0897 20-10-19-02-00511 1933 21-05-10-02-00063 1843 20-05-14-02-00038 0943 E4-A-00142 20-10-19-02-00512 0868 21-05-10-02-00064 1731 20-05-14-02-00039 0882 E4-C-06020 20-10-19-02-00513 0866 E4-A-06033 21-05-10-02-00065 1844 20-05-14-02-00040 0902 E4-A-06044 20-10-19-02-00514 0945 21-05-10-02-00067 1771 20-05-14-02-00041 0870 E4-C-06026 20-10-19-02-00515 0901 E4-A-06035 21-05-10-02-00068 1812 20-05-14-02-00042 0982 20-10-19-02-00516 0857 E4-A-00429 21-05-10-02-00069 1902 20-05-14-02-00043 0953 E4-A-06038 20-10-19-02-00517 0937 21-05-10-02-00072 1821 20-05-14-02-00044 0996 20-10-19-02-00518 0871 E4-C-00087 21-05-10-02-00073 1839 20-05-14-02-00045 0924 20-10-19-02-00519 0859 21-05-10-02-00074 1870 20-05-14-02-00046 0936 E4-A-00350 20-10-19-02-00521 0944 E4P-C-05014 21-05-10-02-00075 1895 20-05-14-02-00047 0923 20-10-19-02-00522 0913 21-05-10-02-00076 1882 20-05-14-02-00048 0958 E4P-C-06022 20-10-19-02-00523 0893 21-05-10-02-00077 1879 20-05-14-02-00049 0892 E4-A-00200 20-10-19-02-00524 0869 E4-C-06019 21-05-10-02-00078 1848 20-05-14-02-00050 0887 E4-A-06039 20-10-19-02-00525 0890 21-05-10-02-00079 1717 20-05-14-02-00051 0973 20-10-19-02-00526 0806 21-05-10-02-00080 1874 20-05-14-02-00052 1009 20-10-19-02-00527 0850 21-05-10-02-00081 1790 20-05-14-02-00053 0956 E4-B-00049 20-10-19-02-00528 1315 E4-C-06053 21-05-10-02-00082 1835 20-05-14-02-00054 0976 20-10-19-02-00529 0863 21-05-10-02-00083 1909 20-05-14-02-00055 0964 E4-C-06027 20-10-19-02-00530 0914 21-05-10-02-00084 1765 20-05-14-02-00056 1068 20-10-19-02-00531 1301 E4-A-06075 21-05-10-02-00085 1834 20-05-14-02-00057 0992 20-10-19-02-00532 0931 E4-A-00215 21-05-10-02-00086 1847 20-05-14-02-00058 0900 E4-B-00196 20-10-19-02-00533 0758 E4P-Z-06001 21-05-10-02-00087 1626 20-05-14-02-00059 0991 20-10-19-02-00534 0858 E4-C-00125 21-05-10-02-00088 1913 20-05-14-02-00060 1025 20-10-19-02-00535 0730 E4-A-05093 21-05-10-02-00090 1888 20-05-14-02-00061 1063 20-10-19-02-00536 0941 21-05-10-02-00091 1691 20-05-14-02-00062 0987 20-10-19-02-00537 0843 21-05-10-02-00092 1917 ### Page 11 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 11-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N High Pressure Pump S/N Gear S/N Engine S/N 20-05-14-02-00063 0994 20-10-19-02-00538 0837 21-05-10-02-00093 1690 20-05-14-02-00064 0947 20-10-19-02-00539 1274 E4-C-00199 21-05-10-02-00094 1849 20-05-14-02-00065 1054 20-10-19-02-00540 1236 E4-A-00075 21-05-10-02-00095 1914 20-05-14-02-00066 1111 20-10-19-02-00541 1278 E4P-C-06033 21-05-10-02-00096 1756 20-05-14-02-00067 0997 20-10-19-02-00542 0798 21-05-10-02-00097 1820 20-05-14-02-00068 1057 E4-A-06048 20-10-19-02-00544 1292 E4P-C-06040 21-05-10-02-00098 1838 20-05-14-02-00069 0984 20-10-19-02-00545 1260 E4-A-00279 21-05-10-02-00099 1743 20-05-14-02-00070 1055 20-10-19-02-00546 1269 21-05-10-02-00100 1801 20-05-14-02-00071 0981 20-10-19-02-00547 1273 21-05-10-02-00101 1851 20-05-14-02-00072 0980 20-10-19-02-00548 1214 21-05-10-02-00102 1688 20-05-14-02-00073 0977 E4-A-06049 20-10-19-02-00549 1288 E4-A-06067 21-05-10-02-00103 1735 20-05-14-02-00074 0993 20-10-19-02-00550 1270 E4-A-06073 21-05-10-02-00104 1885 20-05-14-02-00075 0986 20-10-19-02-00551 1243 E4-C-06049 21-05-10-02-00105 1899 20-05-14-02-00076 1007 20-10-19-02-00552 1217 21-05-10-02-00106 1858 20-05-14-02-00077 0963 20-10-19-02-00553 1229 E4-C-06062 21-05-10-02-00107 1736 20-05-14-02-00078 0983 20-10-19-02-00554 1256 21-05-10-02-00108 1772 20-05-14-02-00079 1003 20-10-19-02-00555 1282 21-05-10-02-00109 1764 20-05-14-02-00080 1000 20-10-19-02-00556 1246 21-05-10-02-00110 1867 20-05-14-02-00081 0989 20-10-19-02-00558 1220 21-05-10-02-00111 1855 20-05-14-02-00082 0998 20-10-19-02-00559 1207 E4-A-00513 21-05-10-02-00112 1734 20-05-14-02-00083 1002 20-10-19-02-00560 1286 E4-C-06050 21-05-10-02-00113 1762 20-05-14-02-00084 0995 20-10-19-02-00561 1228 21-05-10-02-00114 1852 20-05-14-02-00085 0960 20-10-19-02-00562 1401 21-05-10-02-00115 1832 20-05-15-02-00420 0548 20-10-19-02-00563 1298 E4-A-06055 21-05-10-02-00116 1898 20-05-15-02-00421 1010 20-10-19-02-00564 1334 E4P-C-06046 21-05-10-02-00117 1901 20-05-15-02-00422 0975 20-10-19-02-00565 1201 E4-C-06061 21-05-10-02-00118 1659 20-05-15-02-00423 0990 20-10-19-02-00566 1237 E4P-C-06030 21-05-10-02-00119 1864 20-05-15-02-00424 0999 20-10-19-02-00567 1234 21-05-10-02-00120 1919 20-05-15-02-00425 0970 20-10-19-02-00568 1190 21-05-10-02-00121 1730 20-05-15-02-00426 1008 20-10-19-02-00569 1285 E4-A-06051 21-05-10-02-00122 1732 20-05-15-02-00430 0967 20-10-19-02-00570 1230 21-05-10-02-00123 1741 20-05-15-02-00432 0968 20-10-19-02-00571 1202 21-05-10-02-00124 1861 20-06-18-02-00879 1076 20-10-19-02-00572 1205 E4P-C-06042 21-05-10-02-00125 1916 20-06-18-02-00880 0813 20-10-19-02-00573 1204 E4-A-00441 21-05-10-02-00126 1845 20-06-18-02-00881 1014 E4P-C-06023 20-10-19-02-00574 1194 21-05-10-02-00127 1766 20-06-18-02-00882 1078 E4P-C-06024 20-10-19-02-00575 1206 21-05-10-02-00129 1738 20-06-18-02-00883 1092 E4P-C-06025 20-10-26-02-00622 1791 21-05-10-02-00130 1714 20-06-18-02-00884 1090 20-10-26-02-00623 1959 21-05-10-02-00131 1737 20-06-18-02-00885 1019 E4-C-06034 20-10-26-02-00624 1806 21-05-10-02-00132 1904 20-06-18-02-00886 1091 E4-B-00383 20-10-26-02-00625 1797 21-05-10-02-00133 1745 20-06-18-02-00887 1077 20-10-26-02-00626 1934 21-05-10-02-00134 1920 20-06-18-02-00888 0639 20-10-26-02-00627 1210 21-05-10-02-00135 1873 ### Page 12 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 12-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 1.5. Reason Occurrences were reported of HPP driving gear failure. Subsequent investigation determined that a certain batch of HPP driving gears was produced with a worn -out assembly tool P/N AE300T012 -1. Those HPP driving gears may have been damaged during assembly. Concurrently, it was determined that, for engines equipped with a certain cylinder head, a stack up of tolerances exists between the cylinder head, cylinder head cover, camshaft gear and HPP gear. Cases of coloured HPP gears p/n E4A-30-000-601 or E4A-30-000-201 rev. AB.1 appeared after limited flight time on engines having CH p/n E4A -12-500-000 installed , for that reason an insufficient tolerance can only be avoided by installing, on such engines, gears p/n E4A-30-000-201 rev. AE.1 (or subsequent approved p/ns or revisions). To correct the possible unsafe condition, this Mandatory Service Bulletin supersedes the MSB-E4-034 and MSB-E4-035 incorporating their requirements and prohibits (re-)installation of a HPP driving gear E4A-30-000-601 or P/N E4A-30-000-201 rev. AB.1 on engines having a cylinder head P/N E4A-12-500- 000 installed. 1.6. Required Actions and Time of Compliance E4A/B/C/P Engines Having an affected cylinder head/HPP driving gear combination: Inspect and Replace the HPP gear with p/n E4A-30-000-201 rev. AE.1 Before the next flight (2) E4A/B/C/P Engines Having an affected cylinder head/HPP driving gear combination and an affected HPP driving gear installed: Inspect and Replace the HPP gear with p/n E4A-30-000-201 rev. AE.1 Before the next flight (2) E4A Engines having an affected HPP driving gear installed Replace the gear Before the total time in service of the affected driving gear reaches 40 FH (1) or during the next scheduled maintenance whichever occurs first E4B/C/P Engines having an affected HPP driving gear installed Replace the gear Before the total time in service of the affected driving gear reaches 80 FH (1) or during the next scheduled maintenance whichever occurs first Note (1): Total time in service of the affected driving gear must be counted from the installation of such part on an engine. For example, if an affected part is installed on an E4A Engine having 480FH, the HPP driving gear must be replaced before reaching 520FH; if an affected part is installed on an E4B/C/P engine having 480FH, the HPP driving gear must be replaced before reaching 560FH. Note (2): For a twin-engine aeroplane that has one or two Group 2 engine(s) installed, a single ferry flight is allowed to position that aeroplane to a location where the actions required by this Service Bulletin can be accomplished on the affected engine(s). Note: Paragraph 1.9 provides Credits for these engines complying with MSB-E4-034 and MSB-E4-035 ### Page 13 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 13-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 1.7. Concurrent documents / references Note: If not specified, the latest revision of the referenced documents applies. • Maintenance Manual E4.08.04 • Service Instruction SI-E4-016 • Service Instruction SI-E4-018 • Mandatory Service Bulletin MSB-E4-034 rev. 1 or subsequent approved revisions • Mandatory Service Bulletin MSB-E4-035 rev. 0 or subsequent approved revisions 1.8. Other publications affected None 1.9. Credits Inspection and replacement of the HPP driving gear on an engine, accomplished before the effective date of this Mandatory Service Bulletin in accordance with the instructions of MSB -E4-034 Revision 1 or MSB-E4-035, as applicable, are acceptable to comply w ith the requirements of this Mandatory Service Bulletin for that engine, provided no affected cylinder head/HPP driving gear combination has been installed on that engine at any time after that inspection. ### Page 14 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 14-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 2. Technical Details 2.1. Removal and inspection of the HPP driving gear 1. Remove the HPP in accordance with the instructions in Maintenance Manual, Doc. No. E4.08.04, Section 73-10-03, Paragraph A. 2. Remove the drive gear from the HPP in accordance with the instructions in Maintenance Manual, Doc. No. E4.08.04, Section 73-10-03, Paragraph C. Caution: Use only the tool p/n AE300T012 -1 provided in the kit of this Service Bulletin to block the gear. 3. To remove the gear from the shaft, use a bearing extractor shown in paragraph 3.2 4. Clean the driving gear with non -chlorinated brake cleaner (recommended product Manufacturer: Förch, Product ID.: R510) 5. Visually inspect the driving gear against colour criteria of Appendix II Table 6; i f the acceptable criteria are not met: o remove the camshafts according to the M aintenance Manual, Doc. No. E4.08.04, Section 85-30-00 Subparagraph 4A (a) - (h) o Inspect the HPP shaft, the cylinder head, camshaft gear, the inlet/outlet camshaft bushing in accordance with the Appendix II of this service bulletin and replace the parts as necessary. 2.2. Installation of the new HPP driving gear 2.2.1 Driving Gear p/n E4A-30-000-201 rev. AB1 or p/n E4A-30-000-601 Caution: DO NOT INSTALL the gear p/n E4A-30-000-201 rev. AB1 or E4A-30-000-601 if a Cylinder Head p/n E4A-12-500-000 is installed on the engine 1. Install the new drive gear in accordance with the instructions in Maintenance Manual, Doc. No. E4.08.04, Section 73-10-03, Paragraph D (replace the nut, if required). Note: Lubricate the gear and the O-ring with engine oil before installing the HPP Caution: Use only the tool p/n AE300T012-1 provided in the kit of this Service Bulletin to block the gear 2. Install the HPP in accordance with the instructions in Maintenance Manual, Doc. No. E4.08.04, Section 73-10-03, Paragraph B. Refer also to chapter 6 Table 2 for the tightening sequence of the screws. 3. Mark a tool cycle on the Tool Cycle Recording Sheet and fill the execution report (both included in the chapter 6 of this Service Bulletin). 4. Do the engine ground run in accordance with the Engine Maintenance Manual Note: One cycle equals the disassembly of the old gear and the installation of the new gear Caution: When the assembly tool p/n AE300T012-1 has reached 100 cycles, discard the tool ### Page 15 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 15-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 2.2.2 Driving gear p/n E4A-30-000-201 Rev. AE.1 or subsequent 1. Install the new drive gear in accordance with the instructions in Maintenance Manual, Doc. No. E4.08.04, Section 73-10-03, Paragraph D (replace the nut, if required). Note: Use a standard low-profile open-ended wrench (27 mm) instead of the special tool. Note: Lubricate the gear and the O-ring with engine oil before installing the HPP 2. Install the HPP in accordance with the instructions in Maintenance Manual, Doc. No. E4.08.04, Section 73-10-03, Paragraph B. Refer also to chapter 6 Table 2 for the tightening sequence of the screws. 3. Do the engine ground run in accordance with the Engine Maintenance Manual 2.3. Illustrations Provided as appendix to this service bulletin 2.4. Mass (weight) Not affected 2.5. Approval statement The technical content of this document is approved under the authority of the DOA ref. EASA. 21J.399. ### Page 16 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 16-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 3. Planning Information 3.1. Material & Availability Quantity Part Description Part Number 1 HPP Drive Gear E4A-30-000-601(1) or E4A-30-000-201 Rev. AB.1(1) or E4A-30-000-201 Rev. AE.1 1 Gasket DIN7603-12x16x2.0 1 Gasket DIN7603-A12x16-AL 1 Holder wrench HPP AE300T012-1 (1)Caution: DO NOT INSTALL the gear p/n E4A -30-000-201 rev. AB1 or E4A -30-000-601 if a Cylinder Head p/n E4A-12-500-000 is installed on the engine Caution: The holder wrench HPP p/n AE300T012-1 can be used for only for 100 cycles, after that the tool is not serviceable and must be scraped. Note: One cycle equals the disassembly of the old gear and the installation of the new gear Figure 1 – Driving gear E4A-30-000-201 Rev. AE.1 3.2. Special tools No. Description Note 1 Holder wrench HPP This special tool is provided as part of this SB and it is limited to 100 cycles 2 Bearing extractor Refer to Figure 2 (not part of the service bulletin kit) Figure 2 – Bearing extractor ### Page 17 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 17-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 3.3. Labor effort 2 Hours for an acceptable gear up to 16 hours for a non -acceptable gear that requires additional inspections and/or parts replacement. The exact time depends on the components that might require replacement and do not include the waiting time between correspondence. 4. Remarks NOTE: o All measures must be carried out by a certified engine station and certified engine mechanics o The accomplishment of the instructions shown under chapter 2 must be confirmed in the respective engine log book o The accomplishment of the instructions must be carried out within the time of compliance according chapter 1.6 o In case of doubt please contact the Austro Engine GmbH – After Sales Support (e-mail: service@austroengine.at; Tel: +43 2622 23000 2525) o For credit information contact Austro Engine GmbH – After Sales Support (e-mail: service@austroengine.at; Tel: +43 2622 23000 2525) ### Page 18 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 18-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 5. Explanatory notes 5.1. Symbol explanation WARNING: Disregarding these safety rules can cause personal injury or even death CAUTION: Disregarding these special instructions and safety measures can cause damage to the engine or other components NOTE: Additional note or instruction for better understanding of an instruction ### Page 19 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 19-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 6. Appendix I Table 2 – HPP tightening sequence Figure 3 Install the HPP tightening the screws clockwise, according to the Figure 3 sequence with 12 Nm.: - Step 1 – 1 at 50% - Step 2 – 2 at 50% - Step 3 – 3 at 50% - Step 4 - 1 at 100% - Step 5 - 2 at 100% - Step 6 - 3 at 100% CAUTION: DO NOT over torque Table 3 – HPP Wrench Cycles recording sheet HPP Wrench Cycles recording sheet Note: For each cycle, mark a cross on the corresponding box. When 100 cycles are reached, discard the wrench. 1 Gear replacement (removal & installation) = 1 cycle 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 HPP Drive gear wrench p/n ### Page 20 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 20-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at Table 4 – Service Bulletin Execution Report (SBER) Service Bulletin Execution Report Note: Aircraft owner: Aircraft Operator: If different from the owner Aircraft: Aircraft Serial Number: Aircraft Marks: Engine (RH) s/n: For single engine a/c, fill only one row Engine (LH) s/n: Flight Hours: Service center: Company Name or reference of the person(s) performing the oil pump replacement Removed HPP Gear s/n: Or Inspected HPP p/n and s/n: Refer to the figure below to identify the serial number NOTE: A scanned version of this form must be provided to: service@austroengine.at copy to: support-austria@diamondaircraft.com support-canada@diamondaircraft.com support@wfjt.com NOTE: The original filled version of this form, must be packed with the removed gear, and provided to Austro Engine Figure 4 – Gear s/n location Figure 5 – HPP p/n and s/n location ### Page 21 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 21-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 7. Appendix II Table 5 - HPP Driving gear assembled - inspection chart Fig. 1 Fig. 2 Fig. 3 Fig. 4 Examples of HPP gear in acceptable conditions Fig. 5 Fig. 6 Fig. 7 Fig. 8 Examples of HPP gear in not acceptable condition Fig. 9 Fig. 10 Fig. 11 Fig. 12 Examples of HPP gear in not acceptable condition X X X X X X X X √ √ √ √ ### Page 22 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 22-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at Fig. 13 Fig. 14 Fig. 15 Fig. 16 Examples of HPP gear in not acceptable condition Fig. 17 Fig. 18 Fig. 19 Fig. 20 Examples of HPP gear in not acceptable condition YES NO Consultation with AE required HPP Driving gear acceptable: Note: • The possible discoloration shown in the non-acceptable gears is due to high friction, which generates heat. When present, the typical discoloration is not homogeneous and presents different shades from black/blue to violet/bronze. • Check the gear according to the discoloration criteria provided. • Discoloration is clearly visible on the outer surface of the gear. • Check also for visible discoloration on the face of the teeth. • Check for excessive wear of the gear. In case of doubt, fill the Appendix III and contact Austro Engine X X X X X X X X ### Page 23 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 23-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at Table 6 - HPP Driving Gear Disassembled - Inspection chart Fig. 21 Fig. 22 Fig. 23 Fig. 24 Examples of gear in acceptable conditions Fig. 25 Fig. 26 Fig. 27 Fig. 28 Examples of gear in not acceptable condition Fig. 29 Fig. 30 Fig. 31 Fig. 32 Examples of gear in not acceptable condition YES NO Consultation with AE required Part acceptable: Note: • The possible discoloration shown in the non-acceptable gears is due to high friction, which generates heat. When present, the typical discoloration is not homogeneous and presents different shades from black/blue to violet/bronze. • Check the gear according to the discoloration criteria provided. • Discoloration is clearly visible on the outer surface of the gear and in the marking zone of the gear. • Check also for visible discoloration on the face of the teeth. • Check for excessive wear of the gear. In case of doubt, fill the Appendix III and contact Austro Engine X X X X X X X X √ √ √ √ ### Page 24 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 24-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at Table 7 - Camshaft/camshaft gear - Camshaft inlet/outlet bearing - Cylinder head – HPP Shaft inspection chart Fig. 33 Fig. 34 Fig. 35 Fig. 36 Examples of normal wear of the cylinder head at camshaft bearings Fig. 37 Fig. 38 Fig. 39 Fig. 40 Examples of normal wear of the cylinder head at camshaft bearings √ √ √ √ √ √ √ √ ### Page 25 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 25-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at Fig. 41 Fig. 42 Fig. 43 Fig. 44 Examples of excessive wear of the cylinder head at camshaft bearings YES NO Consultation with AE required Cylinder Head acceptable: The wear rate of the upper bearing segments, which are located inside the cylinder head cover, and upper bearing brackets is normally higher compared to the lower bearing surfaces. This is caused by the force of the valve springs applied to the camshafts. Examine the bearing segments at the cylinder cover and the cylinder cover for grooves and/or scratches detectable by finger. In case of doubt, fill the Appendix III and contact Austro Engine. X X X X ### Page 26 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 26-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at Fig. 45 Fig. 46 Examples of camshaft bearings in not acceptable conditions Fig. 47 Fig. 48 Fig. 49 Fig. 50 Examples of camshaft bearings in not acceptable conditions YES NO Consultation with AE required Camshaft Bearings acceptable: Note: Examine the inlet/outlet bearings of the camshafts for discoloration, wear, grooves detectable by finger. In case of doubt, fill the Appendix III and contact Austro Engine X X X X X X ### Page 27 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 27-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at Fig. 51 Fig. 52 Fig. 53 Examples of camshaft in acceptable conditions Fig. 54 Fig. 55 Fig. 56 Examples of camshaft in not acceptable conditions Fig. 57 Examples of camshaft in not acceptable conditions YES NO Consultation with AE required Camshaft acceptable: Note: Some bearing positions show a circular discoloration; this is a normal sign of the oil supply bore located inside the lower bearing segment. Bearing surfaces are acceptable when they have: - a homogenous, even surface - no circular sensitive running mark detectable by fingernail. Camshafts with sensitive running marks detectable by fingernail are not permitted for re-use. Replace them by new ones. In case of doubt, fill the Appendix III and contact Austro Engine X X X X √ √ √ ### Page 28 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 28-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at Fig. 58 Fig. 59 Fig. 60 Examples of camshaft gear in acceptable conditions Fig. 61 Fig. 62 Fig. 63 Examples of camshaft gear in acceptable conditions √ √ √ √ √ √ ### Page 29 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 29-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at Fig. 64 Fig. 65 Examples of camshaft gear in not acceptable conditions Fig. 66 Fig. 67 Fig. 68 Fig. 69 Examples of camshaft gear in not acceptable conditions Fig. 70 Fig. 71 Examples of camshaft gear in not acceptable conditions YES NO Consultation with AE required Camshaft gear acceptable: Note: • Check the gear according to the discoloration criteria provided. • Darken gear without clear “overburn” discoloration are acceptable as it is the typical colour of the heat treatment of the material (e.g. figs. 61, 62, 63). • The possible discoloration shown in the non -acceptable gears is due to high friction, which generates heat. When present the typical discoloration is not homogeneous and presents different shades from black/blue to violet/bronze. • Shades of “ burnt” material are typically present on both f ace of the gear, such discoloration is clearly visible on the outer surface of the gear; use a magnifier, if required, to check the inner surface. • Check also for visible discoloration on the face of the teeth. In case of doubt, fill the Appendix III and contact Austro Engine X X X X X X X X ### Page 30 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 30-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at Fig. 72 Fig. 73 Examples of HPP Shaft in acceptable conditions Fig. 74 Fig. 75 Examples of HPP Shaft in not acceptable conditions Fig. 76 Fig. 77 Fig. 78 Fig. 79 Examples of HPP Shaft in not acceptable conditions YES NO Consultation with AE required HPP Shaft acceptable: Note: • Check the shaft according to the discoloration criteria provided. • Shaft darken in the lower area (e.g. figs. 74 to 79). In case of doubt, fill the Appendix III and contact Austro Engine X X X X X X V V ### Page 31 DOA no. EASA.21J.399 Mandatory Service Bulletin No. MSB-E4-036/1 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Nov. 2021 1 14 Dec. 2021 31-31 © 2021 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 8. Appendix III This form must be filled in case support for inspection is requested to Austro Engine. The form should be provided to Austro Engine service, within the photos of the inspected parts. Mark only the applicable parts. Aircraft Serial Number Engine Serial Number Service Contacts Note: please mark only one the applicable box. In case of not applicable/not performed, left the row blank Inspected and found: OK Not OK Pictures attached HPP Gear HPP Shaft Camshaft Gear Camshaft Cylinder Head Bearings NOTE: Filled by: (Name Surname) Date: (DD.MM.YYYY) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.