Airworthiness Directive · Amendment 39-16657 · Rolls-Royce plc (RR) RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17, RB211-Trent 884B-17, RB211-Trent 892-17, RB211-Trent 892B-17, and RB211-Trent 895-17 Turbofan Engines
Rolls-Royce plc (RR) RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17, RB211-Trent 884B-17, RB211-Trent 892-17, RB211-Trent 892B-17, and RB211-Trent 895-17 Turbofan Engines
Superseded. A later AD replaced this one: AD 2012-06-23. Comply with the one in force.
This AD applies to Rolls-Royce plc (RR) RB211-Trent 875-17, RB211-Trent 877-17, RB211-Trent 884-17, RB211-Trent 884B-17, RB211-Trent 892-17, RB211-Trent 892B-17, and RB211-Trent 895-17 turbofan engines.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Unless already done, do the following actions.
(1) Using the corresponding compliance threshold in Table 1 of this AD, perform an initial ultrasonic inspection (UI) of the affected LP compressor blades identified by serial number (S/N) in Appendices 3A through 3F of RR Alert Service Bulletin (ASB) No. RB.211-72-AG244, Revision 1, dated January 26, 2010.
| Appendix Number of RR ASB No. RB.211-72-AG244, Revision 1, that identifies affected LP compressor blades by S/N | Initial Inspection Threshold (Engine Serial Nos. (ESN) are for reference only) |
|---|---|
| 3A | 120 flight cycles after the effective date of this AD. |
| 3B | Blades shown in RR ASB No. RB.211-72-AG244, Revision 1 as fitted to ESN 51039—802 flight cycles after the effective date of this AD. |
| ESNs 51146, 51177, 51145, and 51149—380 flight cycles after the effective date of this AD. | |
| 3C | Blades shown in RR ASB No. RB.211-72-AG244, Revision 1 as fitted to ESN 51001 and blade S/N RGG16694—1,680 flight cycles after the effective date of this AD. |
| ESN 51145, 51149, 51150 and 51204—796 flight cycles after the effective date of this AD. | |
| ESN 51160—1,160 flight cycles after the effective date of this AD. | |
| ESN 51137—1,027 flight cycles after the effective date of this AD. | |
| 3D | Blades shown in RR ASB No. ASB RB.211-72-AG244, Revision 1 as fitted to ESN 51193 and blade S/N RGG20216—1,212 flight cycles after the effective date of this AD. |
| ESN 51200—1,237 flight cycles after the effective date of this AD. | |
| ESN 51280—1,551 flight cycles after the effective date of this AD. | |
| 3E | Blades shown in RR ASB No. RB.211-72-AG244, Revision 1 as fitted to ESN 51004, “na” and blade S/Ns RGG12590, RGG14081, and RGG15419—3,433 flight cycles after the effective date of this AD. |
| ESN 51156—1,627 flight cycles after the effective date of this AD. | |
| 3F | Blades shown in RR ASB No. RB.211-72-AG244, Revision 1 as fitted to ESN 51175, 51194, 51201, 51205, and 51228—2,042 flight cycles after the effective date of this AD. |
| ESN 51264—4,309 flight cycles after the effective date of this AD. | |
| ESN 51443—2,636 flight cycles after the effective date of this AD. | |
| Blade S/N RGG15698—2,638 flight cycles after the effective date of this AD. |
(2) Thereafter, perform repetitive UIs of the affected LP compressor blades within every 100 flight cycles.
(3) Use paragraphs 3.A.(1) through 3.A.(2) of Accomplishment Instructions of RR ASB No. RB.211-72-AG244, Revision 1, dated January 26, 2010, paragraphs 1 through 3.B. of Appendix 1, and paragraphs 1 through 3.C. of Appendix 2, of that ASB, to perform the UIs.
(4) Remove blades from service before further flight that fail the inspection criteria in Appendix 1 of RR ASB No. RB.211-72-AG244, Revision 1, dated January 26, 2010.
(5) For blades that pass inspection, re-apply dry film lubricant, and install all blades in their original position.
(6) After the effective date of this AD, do not install any affected LP compressor blade unless it has passed the initial and repetitive UIs required by this AD.
An initial UI performed before the effective date of this AD using RR ASB No. RB.211-72-AG244, dated August 7, 2009, satisfies the initial UI requirements of this AD.
This AD differs from European Aviation Safety Agency (EASA) AD 2010-0097, dated May 26, 2010. The EASA AD uses calendar dates for initial inspection thresholds. This AD uses flight cycles.
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.
Engines
