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ENTWICKLUNG GMBH Airport Straubing-Wallmühle 94348 Atting / Germany Telefon 49-(0)9429-9409-0 Telefax 49-(0)9429-8432 E-mail: sales@mt-propeller.com
ALERT SERVICE BULLETIN No. 30 R7 DOA No. EASA.21J.020
Page 1 of 5
Subject: Replacement of Blade Lag Screws of a certain production lot.
Affected Propeller: a: All new MTV-5-(), MTV-9-(), MTV-12-(), MTV-14-(), MTV-15-(), MTV-16-(), MTV-18-(), MTV-27-() manufactured from Nov 2013 until October 2014 with Lag Screw type A-983-C-85 are affected.
b: All overhauled or repaired propellers from Nov 2013 until end of October 2014 with new installed lag screws during overhaul, as applicable.
A production lot of lag screws with an improper surface finish was manufactured and installed in the propellers with serial number listed on the pages 2, 3 and 4.
Serial Numbers of Single blades which were manufactured or overhauled at MT-Propeller or an MT-Propeller approved Service Center during this period with the affected lag screws are listed on page 4.
Reason: In extreme applications with high loads single lag screws can fail.
Accomplishment: All propellers affected by this Service Bulletin which are inspected, tear down inspected, repaired, or overhauled must have a lag screw replacement.
Action: All lag screw s A-983-C-85 must be replaced after disassembly of the propeller according to the procedures in the Composite Blade Overhaul Manual E-1290. A record of the replaced lag screws must be sent to techsupport@mt-propeller.com
Required Material: The lag screw A-983-D-85 or A-983-E-85 is available from MT -Propeller Entwicklung GmbH Germany or MT-Propeller USA Inc in Florida.
The Overhaul manual E-1290 can be downloaded from www.mt-propeller.com
Further information from techsupport@mt-propeller.com
This Service Bulletin has been approved according the procedures established for the EASA-certified Design Organization No.:
EASA.21J.020.
Prepared by CVE:
Tina Halbritter Original Issue:
November 4th, 2014
Revision 7:
June 23, 2022 Checked / Approved:
Head of Office of Airworthiness
Martin Albrecht
ENTWICKLUNG GMBH Airport Straubing-Wallmühle 94348 Atting / Germany Telefon 49-(0)9429-9409-0 Telefax 49-(0)9429-8432 E-mail: sales@mt-propeller.com
ALERT SERVICE BULLETIN No. 30 R7 DOA No. EASA.21J.020
Page 2 of 5
MTV-5 Series
04643 130677 130994 130995 131131 131138 131139 131140 131141 140037 140038 140154 140185 140194 140195 140209 140210 140217 140227 140228 140390 140391 140441 140460 140493 140547 140738 140815 141011
MTV-9 Series
98170 01098 03205 03522 04335 071169 100394 110578 130111 130795 130869 130953 130956 130957 130967 130981 130983 130984 130985 130986 130989 131000 131003 131020 131021 131039 131062 131082 131086 131133 131135 131153 131154 131155 131162 131164 131165 140004 140005 140069 140083 140088 140160 140164 140170 140174 140196 140229 140237 140238 140265 140285 140286 140287 140288 140289 140321 140324 140327 140330 140332 140334 140335 140338 140339 140383 140443 140458 140465 140482 140509 140510 140553 140556 140558 140583 140599 140625 140630 140631 140636 140637 140661 140664 140665 140666 140669 140670 140682 140683 140685 140686 140687 140690 140692 140695 140696 140697 140699 140700 140701 140703 140735 140737 140755 140807 140814 140887 140888 141029
MTV-9-K Series
130958 131009 131071 131099 131100 131101 131102 131103 131104 131105 131106 131107 131108 131109 131110 131111 131112 131113 131114 131115 131116 131117 131118 131121 131122 140248 140438 140706
ENTWICKLUNG GMBH Airport Straubing-Wallmühle 94348 Atting / Germany Telefon 49-(0)9429-9409-0 Telefax 49-(0)9429-8432 E-mail: sales@mt-propeller.com
ALERT SERVICE BULLETIN No. 30 R7 DOA No. EASA.21J.020
Page 3 of 5
MTV-12 Series
96089 00355 01030 01403 03651 05333 100619 130914 131008 131022 131023 131043 131072 131073 131076 131087 131134 131136 131137 131146 140002 140003 140015 140016 140092 140133 140163 140165 140166 140183 140186 140233 140234 140235 140236 140244 140245 140262 140295 140314 140336 140337 140385 140435 140437 140446 140455 140456 140501 140506 140522 140531 140574 140607 140608 140725 140753 140805 140806 140810 140840 140905 140906 140972 140987 141046 141047
MTV-14 Series
90127 93239 00029 04599 080900 131028 131037 131080 131147 140006 140129 140130 140200 140304 140377 140378 140451 140452 140499 140532 140533 140545 140640 140642 140645 140646 140647 140649 140878 140879 141098 141181
MTV-15 Series
110536 130980 131041 131045 131049 131055 131057 131061 131079 131132 140009 140010 140011 140033 140034 140035 140089 140103 140104 140105 140106 140148 140169 140187 140219 140279 140280 140281 140316 140392 140411 140650 140651 140653 140851
MTV-16 Series
080308 130670 MTV-18 Series 140444 140620
ENTWICKLUNG GMBH Airport Straubing-Wallmühle 94348 Atting / Germany Telefon 49-(0)9429-9409-0 Telefax 49-(0)9429-8432 E-mail: sales@mt-propeller.com
ALERT SERVICE BULLETIN No. 30 R7 DOA No. EASA.21J.020
Page 4 of 5
MTV-27 Series
110571 130747 130807 131001 131002 131005 131012 131013 131048 131059 131060 131077 140065 140085 140091 140151 140201 140203 140231 140263 140264 140301 140322 140323 140333 140384 140483 140525 140526 140527 140528 140544 140823 140885 140886 140957 141023 141099
Single Blade Types
170-57 AFB-52170 AFB-52171 AFB-52172 180-17c MI-6468 MI-6469 MI-6470 183-50a AEJ-51158 AEJ-51159 AEJ-51160 183-59b YL-33187 YL-33188 YL-33189 188-302 AEI-50663 AEI-50664 AEI-50665 188-53 AFE-53474 AFE-53475 AFE-53476
195-30b AFB-52327 AFB-52328 AFB-52329 AFB-52330 200-52 AFH-54493 AFH-54494 AFH-54495 205-58 AAH-38361 AEJ-51049 AFD-53045 210-58 AFB-52442 AFB-52443 AFE-53403 AFE-53404 215-136 AEJ-51047 AEJ-51048 C183-17(e) AEJ-51025-A AEJ-51026-A AEJ-51027-A C200-15 AFB-52261 AFD-52924 AFD-52925 AFD-52926 CF183-59b AFG-54100 AFG-54101 AFG-54102 CFLD168-101b AFD-52864 AFD-52865 AFD-52866 CFR-208-56 AFD-52936 AFD-52937 AFD-52938 AFD-52939 AFD-52940 CFR210-56 AFG-54188 AFG-54189 AFG-54190 AFG-54191 AFG-54192 CFR210-58d AFB-52321 AFG-54221 AFG-54222 AFG-54223 AFG-54224 AFG-54225 AFG-54226 AFG-54227 AFG-54228 AFG-54229 CFR225-55f AFG-54173 AFG-54174 AFG-54175 AFG-54176 AFG-54177 CFR250-103 AFB-52377 AFB-52378 AFB-52379 AFB-52380 AFB-52381 CFRL250-103 AFG-54054 AFG-54055 AFG-54056 AFG-54057 AFG-54058 CFRL250-55b AFC-52613 AFC-52614 AFC-52615 AFC-52616 AFC-52617 AFD-53135 AFD-53136 AFD-53137 AFD-53138 AFD-53139 CL250-55 AFD-52918 AFD-52919 AFD-52920 CRLD199-117 AFA-51905 AFA-51906 AFA-51907 AFA-51908 AFA-51909 AFA-51910 AFA-51911 AFA-51912 AFA-51913 AFA-51914 AFA-51992 AFA-51993 AFA-51994 AFA-51995 AFA-51996
ENTWICKLUNG GMBH Airport Straubing-Wallmühle 94348 Atting / Germany Telefon 49-(0)9429-9409-0 Telefax 49-(0)9429-8432 E-mail: sales@mt-propeller.com
ALERT SERVICE BULLETIN No. 30 R7 DOA No. EASA.21J.020
Page 5 of 5
Service Bulletin 30 Compliance / Claim Form
Owner Information:
*Name:
*Address:
*Phone/Fax Number:
*E-mail Address:
Propeller Service Facility (Shipping Location):
*Name of Repair Facility:
*Address:
*Contact Person:
*Phone/Fax Number:
Send this Order Form to: techsupport@mt-propeller.com MT Propeller use only – do not write below this line Warranty # : Approved by:
*Propeller Type:
*Propeller Serial Number:
*Blade Serial Number:
*TSN / TSO