# Parker Service Bulletin 390700-27-002 Copy: Revision 1 ("Parker 390700-27-002"), 7 pages: PDF https://openairdocs.org/files/sha256/09/19/0919bcaf731069cb59caf3cd5d201a3a7040c24e63ef69815454cd6e18c57934; text https://openairdocs.org/service-documents/parker/sb-390700-27-002/file/0919bcaf7310.md. Rights: © Parker. Filed by the FAA in regulations.gov docket FAA-2015-8434; AD 2017-19-27 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. ## Details - Manufacturer: [Parker](https://openairdocs.org/service-documents/parker.md) - Type: Service bulletin (Service Bulletin) - Number: 390700-27-002 - Latest revision known: 390700-27-002, Revision 1, dated April 13, 2016 (OpenAirDocs) - Page: https://openairdocs.org/service-documents/parker/sb-390700-27-002 ## ADs that cite it (1) (OpenAirDocs) Newest first, with the revision each names, as OpenAirDocs read it from the AD's text. - [AD 2017-19-27](https://openairdocs.org/ad/2017-19-27.md), effective Nov 1, 2017: Revision 1 ## Text (7 pages) Rights: © Parker. Filed by the FAA in regulations.gov docket FAA-2015-8434; AD 2017-19-27 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. Some pages are OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 Cus tomer Support Operations SERVICE BULLETIN Initial Issue M ay 29, 2014 390700-27-002 Rev. 1 Apr 13, 2016 Page 1 of 1 THIS DOCUMENT CONTAINS INFORMATION THAT IS CONFIDENTIAL AND PR OPRIETARY TO PARKER-HANNIFIN CORPORATION. THIS DOCUMENT IS FURNIS HED ON THE UNDERSTANDING THAT THE DOCUMENT AND THE INFORMATION IT CONTAINS WILL NOT BE COPIED OR DISCLOSED TO OTHERS EXCEPT WITH THE WRITT EN CONSENT OF PARKER, WILL NOT BE USED FOR ANY PURPOSE OTHER THAN CONDUCTING BUSINESS WITH PARKER, AND WILL BE RETURNED AND ALL FURTHER US E DISCONTINUED UPON REQUEST BY PARKER. COPYRIGHT PARKER. YEAR OF COPYRIGHT IS FIRST YEAR INDICATED ON THIS DOCUMENT. ALL RIGHTS RESERVED. FLIGHT CONTROLS SPOILER POWER CONTROL UNIT (PCU) ACTUATOR ASSEMBLY PART NUMBERS 390700-1007 and -1009 TO ELIMINATE POTENTIAL AXIAL CRACKS REVISION TRANSMITTAL SHEET This page transmits Revision 1 for Service Bulletin 390700-27-002. SUMMARY: Page 1 Paragraph 1.A. Revised: …0474 through 1321, and S/N 1394… To: …0474 through 1321, S/N range in Appendix 4, and S/N 1394… Pages 5, 6 4. Appendix. Added: Tabl e 1 – Affected S/N range. No additional work is required for parts previously modified by prior issue of this Service Bulletin. REVISION HISTORY: Initial Issue May 29, 2014 Revision 1 Apr 13, 2016 ### Page 2 Cus tomer Support Operations SERVICE BULLETIN Initial Issue May 29, 2014 390700-27-002 Rev. 1 Apr 13, 2016 Page 1 of 6 THIS DOCUMENT CONTAINS INFORMATION THAT IS CONFIDENTIAL AND PR OPRIETARY TO PARKER-HANNIFIN CORPORATION. THIS DOCUMENT IS FURNIS HED ON THE UNDERSTANDING THAT THE DOCUMENT AND THE INFORMATION IT CONTAINS WILL NOT BE COPIED OR DISCLOSED TO OTHERS EXCEPT WITH THE WRITT EN CONSENT OF PARKER, WILL NOT BE USED FOR ANY PURPOSE OTHER THAN CONDUCTING BUSINESS WITH PARKER, AND WILL BE RETURNED AND ALL FURTHER US E DISCONTINUED UPON REQUEST BY PARKER. COPYRIGHT PARKER. YEAR OF COPYRIGHT IS FIRST YEAR INDICATED ON THIS DOCUMENT. ALL RIGHTS RESERVED. FLIGHT CONTROLS SPOILER POWER CONTROL UNIT (PCU) ACTUATOR ASSEMBLY PART NUMBERS 390700-1007 and -1009 TO ELIMINATE POTENTIAL AXIAL CRACKS 1. PLANNING INFORMATION A. Effectivity This Se rvice Bulletin is applicable to the Parker Spoiler PCU Actuator assembly and herein after re- ferred to as the Spoiler PCU, Part Numbers (P/N) 390700-1007 and -1009 with Serial Numbers (S/N) 0474 throug h 1321, S/N range in Appendix 4, and S/N 1394 through 1876 without suffix “A” installed on the Das h 8-400 series aircraft. B. Concurrent Requirements Service Bullet in 390700-27-001. C. Reason During endurance testing, Parker has identified the potential for axial crack starting to develop along the PCU ma nifold cylinder bore, at the intersection of a 0.281 inch diameter port. No cracks have been repo rted in service. The condition has been attributed to a range of PCU manifolds produced unde r a specific heat treat process. It can limit the service life of the manifold sub-assembly P/N 3907 52 to 56,000 flight cycles. Parker has developed a rework procedure, when incorporated, will remove the life limitation. D. Description This Se rvice Bulletin provides instructions for operators to return the affected Spoiler PCU to Parker Customer Support for rework per the accomplishment instructions of this Service Bulletin. E. Compliance Refer to Bombardier cover Service Bulletin 84-27-64 for recommended compliance. Spoiler PCUs previou sly reworked through Parker is denoted by suffix “A” after the S/N, are already compli ant with this Service Bulletin. F. Approval This Se rvice Bulletin has been reviewed and accepted by Bombardier Aerospace. ### Page 3 Cus tomer Support Operations SERVICE BULLETIN Initial Issue May 29, 2014 390700-27-002 Rev. 1 Apr 13, 2016 Page 2 of 6 THIS DOCUMENT CONTAINS INFORMATION THAT IS CONFIDENTIAL AND PR OPRIETARY TO PARKER-HANNIFIN CORPORATION. THIS DOCUMENT IS FURNIS HED ON THE UNDERSTANDING THAT THE DOCUMENT AND THE INFORMATION IT CONTAINS WILL NOT BE COPIED OR DISCLOSED TO OTHERS EXCEPT WITH THE WRITT EN CONSENT OF PARKER, WILL NOT BE USED FOR ANY PURPOSE OTHER THAN CONDUCTING BUSINESS WITH PARKER, AND WILL BE RETURNED AND ALL FURTHER US E DISCONTINUED UPON REQUEST BY PARKER. COPYRIGHT PARKER. YEAR OF COPYRIGHT IS FIRST YEAR INDICATED ON THIS DOCUMENT. ALL RIGHTS RESERVED. G. Manpower This repai r may be accomplished, by a crew of one (1), in the following approximate man-hours: WORK P HASES MAN-HOURS Disassemble per CMM 27-60-04 2.0 Manifold rework to P/N 390752-101LRW1 2.0 Reassemble per CMM 27-60-04 3.0 Final test per CMM 27-60-04 3.0 Lockwire, final details and re-identification per CMM 27-60-04 1.0 Total Man-Hours 11.0 NOTE: This Service Bulletin assumes the component has been removed from the aircraft and does not account for setup time. H. Weight and Balance None. I. Electrical Load Data Not affec ted. J . Software Ac complishment Summary Not appli cable. K. References Parker Hannifin Corporation, Component Maintenance Manual (CMM), 27-60-04. L. Other Publications Affected The information in this Service Bulletin will be incorporated into Parker Hannifin Corporation CMM 27-6 0-04 during the next scheduled revision. M. Interchangeability or Intermixability of Parts Refer to Bom bardier cover Service Bulletin 84-27-64. ### Page 4 Cus tomer Support Operations SERVICE BULLETIN Initial Issue May 29, 2014 390700-27-002 Rev. 1 Apr 13, 2016 Page 3 of 6 THIS DOCUMENT CONTAINS INFORMATION THAT IS CONFIDENTIAL AND PR OPRIETARY TO PARKER-HANNIFIN CORPORATION. THIS DOCUMENT IS FURNIS HED ON THE UNDERSTANDING THAT THE DOCUMENT AND THE INFORMATION IT CONTAINS WILL NOT BE COPIED OR DISCLOSED TO OTHERS EXCEPT WITH THE WRITT EN CONSENT OF PARKER, WILL NOT BE USED FOR ANY PURPOSE OTHER THAN CONDUCTING BUSINESS WITH PARKER, AND WILL BE RETURNED AND ALL FURTHER US E DISCONTINUED UPON REQUEST BY PARKER. COPYRIGHT PARKER. YEAR OF COPYRIGHT IS FIRST YEAR INDICATED ON THIS DOCUMENT. ALL RIGHTS RESERVED. 2. MATERIAL INFORMATION A. Material - Price and Availability (1) Affected Spoiler PCUs may be returned, to Parker Hannifin Corporation for a free-of-charge (FO C) repair at the address listed below: PARKER HA NNIFIN CORPORATION PHONE: (949) 83 3-3000 Customer Support Operations FAX: (949) 80 9-8646 14300 Alton Parkway Irvine, CA 92618-1898 REPAIR STATION NO.: AU4R063M USA B. Industry Support Information (1) Parker automatically incorporates this Service Bulletin if a Spoiler PCU in the affected S/N range is retu rned for repair or upgrade for other reasons. (2) Operators may contact their respective Parker Hannifin Corporation Customer Service Administra- tor to schedule implementation of this Service Bulletin. (3) Damage from mishandling and/or abnormal use, parts or work required outside the scope of this Service Bullet in and concurrent incorporation of other chargeable Service Bulletins, is subject to time and mat erial charges. C. Material Necessary for Each Component NEW PART REQUIRED ORIGINAL PART TO BE REPLACED Part Number Description Qty Part Number Disposition 390752-101LRW1 Manifold 1 390752-101 Rework D. Material Necessary for Each Spar e None. E. Re-identified Parts After the inco rporation of this Service Bulletin, Parker Hannifin Corporation will re-identify the Spoiler PCU with suffix “A” after the S/N. F. Tooling - Price and Availability None. ### Page 5 Cus tomer Support Operations SERVICE BULLETIN Initial Issue May 29, 2014 390700-27-002 Rev. 1 Apr 13, 2016 Page 4 of 6 THIS DOCUMENT CONTAINS INFORMATION THAT IS CONFIDENTIAL AND PR OPRIETARY TO PARKER-HANNIFIN CORPORATION. THIS DOCUMENT IS FURNIS HED ON THE UNDERSTANDING THAT THE DOCUMENT AND THE INFORMATION IT CONTAINS WILL NOT BE COPIED OR DISCLOSED TO OTHERS EXCEPT WITH THE WRITT EN CONSENT OF PARKER, WILL NOT BE USED FOR ANY PURPOSE OTHER THAN CONDUCTING BUSINESS WITH PARKER, AND WILL BE RETURNED AND ALL FURTHER US E DISCONTINUED UPON REQUEST BY PARKER. COPYRIGHT PARKER. YEAR OF COPYRIGHT IS FIRST YEAR INDICATED ON THIS DOCUMENT. ALL RIGHTS RESERVED. 3. ACCOMPLISHMENT INSTRUCTIONS A. The following instructions are provided to rework an d re-identify the Spoiler PCU In Accordance With (IAW) CMM 27-60-04. (1) Perform teardown as necessary to remove the manifold sub-assembly P/N 390752-101 (625A, IPL Figure 1) IAW CMM DI SASSEMBLY section. (2) Remove and replace manifold with manifold P/N 390752-101LRW1 or replace with new mani- fold P/N 3907 52-101 outside the affected S/N range (stocked after September 1, 2013). NOTE: Manif old P/N 390752-101LRW1 is a reworked 390752-101 manifold that has no life limitation. (3) Assemble the PCU using manifold sub-assembly P/N 390752-101LRW1 or P/N 390752-101 IAW CMM ASSEMBLY s ection. (4) Test IAW CMM TESTING AND FAULT ISOLATION section. (5) After completion of the bench tests, secure the set screws (25) with a swage collar (15) and swage pi n (20). Follow the instructions provided CMM ASSEMBLY section to swage the collar to the pin. See CMM Figure 7006 for correct orientation of the swage pin. (6) Remove and replace old nameplate (5, IPL Figure 1). Identify new nameplate with suffix "A" immediately after S/N IAW CMM REPAIR section. NOTE: Manifold identification should be performed prior to installation. (7) Perform additional final assembly procedures as required IAW CMM ASSEMBLY section. ### Page 6 (OCR) Parker Customer Support Operations SERVICE BULLETIN 4. APPENDIX Table 1 - Affected S/N Range 390700-1009 390752-101 390700-1009 390752-101 390700-1009 390752-101 Number Top S/N Top S/N Top S/N 1 BB0220 BB0334 2 1958 BB0126 56 2047 BB0259 110 2103 BB0332 3 1960 BB0125 57 2048 BB0228 111 2104 BB0339 4 1962 BB0135 58 2049 BB0219 112 2105 BB0336 1964 BB0130 59 2050 BB0258 113 2106 BB0345 1966 BB0129 60 2051 BB0215 114 2107 BB0340 1967 BB0132 61 2052 BB0256 115 2108 BB0344 1969 BB0137 62 2053 BB0224 116 2109 BB0342 9 1970 BB0134 63 2054 BB0223 117 2110 BB0337 10 1971 BB0145 64 2055 BB0232 118 2111 BB0341 11 1972 BB0139 65 2056 BB0235 119 2112 BB0343 12 1974 BB0144 66 2057 BB0264 120 2113 BB0338 13 1976 BB0141 67 2058 BB0272 121 2114 BB0347 14 1977 BB0142 68 2059 BB0283 122 2115 BB0359 15 1978 BB0143 69 2060 BB0274 123 2116 BB0348 16 1979 BB0146 70 2061 BB0277 124 2117 BB0349 17 1980 BB0147 71 2062 BB0285 125 2118 BB0346 18 2007 BB0187 72 2063 BB0275 126 2119 BB0354 19 2008 BB0184 73 2064 BB0276 127 2121 BB0353 20 2011 BB0180 74 2065 BB0279 128 2122 BB0357 21 2012 BB0182 75 2066 BB0273 129 2123 BB0352 22 2013 BB0186 76 2067 BB0270 130 2124 BB0217 23 2014 BB0195 77 2068 BB0278 131 2125 BB0351 24 2015 BB0192 78 2069 BB0281 132 2126 BB0361 25 2016 BB0191 79 2070 BB0284 133 2127 BB0368 26 2017 BB0198 80 2071 BB0286 134 2128 BB0363 27 2018 BB0199 81 2072 BB0287 135 2129 BB0367 28 2019 BB0190 82 2073 BB0280 136 2130 BB0365 29 2020 BB0193 83 2074 BB0282 137 2131 BB0362 30 2021 BB0196 84 2075 BB0288 138 2132 BB0364 31 2022 BB0197 85 2076 BB0294 139 2134 BB0383 32 2023 BB0194 86 2077 BB0З03 140 2135 BB0380 33 2024 BB0201 87 2078 BB0304 141 2136 BB0356 34 2025 BB0200 88 2079 BB0302 142 2137 BB0388 35 2026 BB0203 89 2080 BB0296 143 2138 BB0387 36 2027 BB0202 90 2081 BB0292 144 2139 BB0385 37 2028 BB0204 91 2082 BB0298 145 2140 BB0381 38 2029 BB0205 92 2083 BB0297 146 2141 BB0384 39 2030 BB0206 93 2084 BB0313 147 2142 BB0386 40 2031 BB0207 94 2085 BB0301 148 2143 BB0389 Initial Issue May 29, 2014 390700-27-002 Rev. 1 Apr 13, 2016 Page 5 of 6 THIS DOCUMENT CONTAINS INFORMATION THAT IS CONFIDENTIAL AND PROPRIETARY TO PARKER-HANNIFIN CORPORATION. THIS DOCUMENT IS FURNISHED ON THE UNDERSTANDING THAT THE DOCUMENT AND THE INFORMATION IT CONTAINS WILL NOT BE COPIED OR DISCLOSED TO OTHERS EXCEPT WITH THE WRITTEN CONSENT OF PARKER, WILL NOT BE USED FOR ANY PURPOSE OTHER THAN CONDUCTING BUSINESS WITH PARKER, AND WILL BE RETURNED AND ALL FURTHER USE DISCONTINUED UPON REQUEST BY PARKER. COPYRIGHT PARKER. YEAR OF COPYRIGHT IS FIRST YEAR INDICATED ON THIS DOCUMENT. ALL RIGHTS RESERVED. ### Page 7 (OCR) Parker Customer Support Operations SERVICE BULLETIN Table 1 continued. 41 2032 BB0208 95 2086 BB0310 149 2144 BB0382 42 2033 BB0209 96 2087 BB0311 150 2145 BB0376 43 2034 BB0213 97 2088 BB0317 151 2146 BB0379 44 2035 BB0216 98 2090 BB0305 152 2147 BB0374 45 2036 BB0214 99 2091 BB0306 153 2148 BB0321 46 2037 BB0236 100 2092 BB0315 154 2149 BB0406 47 2038 BB0233 101 2093 BB0318 155 2150 BB0360 48 2039 BB0253 102 2094 BB0312 156 2151 BB0378 49 2040 BB0254 103 2095 BB0314 157 2152 BB0322 50 2041 BB0231 104 2096 BB0316 158 2153 BB0375 51 2042 BB0252 105 2098 BB0330 159 2154 BB0372 52 2043 BB0238 106 2099 BB0331 160 2155 BB0401 53 2044 BB0257 107 2100 BB0335 161 2156 BB0377 54 2045 BB0255 108 2101 BB0333 162 2158 BB0407 Initial Issue May 29, 2014 390700-27-002 Rev. 1 Apr 13, 2016 Page 6 of 6 THIS DOCUMENT CONTAINS INFORMATION THAT IS CONFIDENTIAL AND PROPRIETARY TO PARKER-HANNIFIN CORPORATION. THIS DOCUMENT IS FURNISHED ON THE UNDERSTANDING THAT THE DOCUMENT AND THE INFORMATION IT CONTAINS WILL NOT BE COPIED OR DISCLOSED TO OTHERS EXCEPT WITH THE WRITTEN CONSENT OF PARKER, WILL NOT BE USED FOR ANY PURPOSE OTHER THAN CONDUCTING BUSINESS WITH PARKER, AND WILL BE RETURNED AND ALL FURTHER USE DISCONTINUED UPON REQUEST BY PARKER. COPYRIGHT PARKER. YEAR OF COPYRIGHT IS FIRST YEAR INDICATED ON THIS DOCUMENT. ALL RIGHTS RESERVED. --- 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.