Airworthiness Directive · Amendment 39-13286 · Rolls-Royce Deutschland Ltd & Co KG Dart 528, 529, 529D, 531, 532, 535, 542, and 552 Series Turboprop Engines
Rolls-Royce Deutschland Ltd & Co KG Dart 528, 529, 529D, 531, 532, 535, 542, and 552 Series Turboprop Engines
This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD) (formerly Rolls-Royce plc) Dart 528-7E, 529-7H, -7E, -8E, -8H, -8X, -8Y, -8Z, 529D-7E, -7H, -8E, -8H, -8X, -8Y, -8Z, 531, 532-2L, -7, -7N, -7P, -7L, -7R, 535-2, -7R, 542-4, -4K, -10, -10J, - 10K, 552-2, 552-7, and -7R turboprop engines with a high pressure (HP) turbine disc or intermediate pressure (IP) turbine disc that has a serial number (SN) listed in Table 1 of this AD installed. These engines are installed on, but not limited to, BAE Systems (Operations) Limited, Model HS 748 Series 2A and 2B airplanes, Fokker Aircraft B.V., F.27 Friendship Mark 200, 400, 500, and 600 airplanes, Gulfstream Aerospace Corporation Model G-159 "Gulfstream I" airplanes, Maryland Air Industries, Inc. F-7F, F-27A, F-27G, F- 27J, F-27M, FH-227B, FH-227C, FH-227D, and FH-227E airplanes, and Mitsubishi Heavy Industries, Ltd Model YS-11, YS-11A-200, YS-11A- 300, YS-11A-500, and YS-11A-600 airplanes. Table 1 follows: Table 1.--Affected Turbine Discs Turbine disc cycles-since- Turbine disc serial number Turbine disc stage Date when coating was new when applied coating was applied DETN128................................. HP 31. Mar 01................ 4356 DETN155................................. HP 22. Jun 99................ 0 DETN3541................................ HP 17. Apr 01................ 2850 DETN3542................................ HP 16. Jan 01................ 6053 LA759................................... HP 27. Oct 00................ 5858 LP219................................... HP 23. Nov 99................ 6688 LW376................................... HP 21. Jul 99................ 3302 LX484................................... HP 22. Feb 00................ 4632 LZ299................................... HP 23. Dec 99................ 5839 LZ404................................... HP 13. Jul 01................ 630 LZ555................................... HP 30. Aug 00................ 2158 LZ564................................... HP 15. Mar 01................ 4204 SG612................................... HP 20. Apr 00................ 5735 SH195................................... HP 16. Dec 99................ 5349 DETN25.................................. IP 30. Aug 00................ 2158 DETN238................................. IP 31. Mar 01................ 4356 DETN240................................. IP 18. Apr 01................ 0 DETN944................................. IP 04. Mar 00................ 2200 DETN2666................................ IP 17. Apr 01................ 2850 DETN5538................................ IP 16. Jul 01................ 630 DETN6400................................ IP 14. Apr 99................ 0 LA407................................... IP 22. Jun 00................ 5736 LA858................................... IP 27. Oct 00................ 5858 LB99.................................... IP 13. Aug 99................ 9093 LE284................................... IP 24. Dec 99................ 5679 LN87.................................... IP 10. May 99................ 5829 LP519................................... IP 23. Nov 99................ 6688 LW517................................... IP 22. Dec 99................ 5865 LX214................................... IP 09. Dec 00................ 6498 LX379................................... IP 22. Feb 00................ 4632 LZ248................................... IP 23. Dec 99................ 5839 LZ385................................... IP 17. Oct 01................ 9072 LZ603................................... IP 22. Jun 99................ 0 SG554................................... IP 20. Apr 00................ 5735 SH863................................... IP 16. Dec 99................ 5349
The FAA is adopting a new airworthiness directive (AD) for Rolls-Royce Deutschland Ltd & Co KG (RRD) (formerly Rolls-Royce plc) Dart 528-7E, 529-7H, -7E, -8E, -8H, -8X, -8Y, -8Z, 529D-7E, -7H, -8E, - 8H, -8X, -8Y, -8Z, 531, 532-2L, -7, -7N, -7P, -7L, -7R, 535-2, -7R, 542-4, -4K, -10, -10J, -10K, 552-2, 552-7, and -7R turboprop engines. This AD requires removal of any Sermetel coating (Omat 7/46) from certain high pressure (HP) turbine discs and intermediate pressure (IP) turbine discs, and inspection of discs after coating removal. This AD is prompted by reports of Sermetel coating (Omat 7/46) applied to certain turbine discs which, if allowed to remain on the discs would react adversely with the disc dry film lubricant, and could result in uncontained HP or IP turbine disc failure, resulting in possible damage to the airplane. We are issuing this AD to prevent uncontained HP or IP turbine disc failure, which could result in damage to the airplane.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
