Airworthiness Directive · Amendment 39-18407 · Rolls-Royce plc Turbofan Engines
Rolls-Royce plc Turbofan Engines
This AD applies to Rolls-Royce plc (RR) RB211 Trent 768-60, 772-60, and 772B-60 turbofan engines, all serial numbers, except those engines:
(1) That have had Modification 72-H754 applied in production, or
(2) that have been modified in accordance with RR Service Bulletin (SB) No. RB.211-72-H754, including the Supplement, Revision 1, dated July 29, 2015 or initial issue dated October 1, 2014; or
(3) with sealing sleeve, part number (P/N) FW15003, with markings 102013, 112013, or 102013L.
We are superseding airworthiness directive (AD) 2015-04-03 that applies to certain Rolls-Royce plc (RR) RB211 Trent 768-60, 772- 60, and 772B-60 turbofan engines. AD 2015-04-03 required inspection of the sealing sleeve on the high-pressure/intermediate-pressure (HP/IP) turbine support internal oil feed tube and removal of those sealing sleeves affected by AD 2015-04-03. This AD requires removal of either the affected sealing sleeve only or both the affected sealing sleeve and the oil feed tube. This AD was prompted by fractures of the HP/IP turbine support internal oil feed tube. We are issuing this AD to prevent failure of the HP/IP turbine support internal oil feed tube, uncontained engine failure, and damage to the airplane.
(1) If sealing sleeve, P/N FW15003, is installed without markings 102013, 112013, or 102013L, or if the markings cannot be sufficiently identified, then within 1,600 flight cycles or 24 months after the effective date of this AD, whichever occurs first:
(i) Remove the affected sealing sleeve, P/N FW15003, and replace it with a part eligible for installation. Use paragraph 3.A.(4)(b) of RR Alert Non-Modification Service Bulletin No. RB.211-72-AJ035, Revision 2, dated August 10, 2015, to perform the part replacement, or,
(ii) Remove the affected sealing sleeve, P/N FW15003, and the oil feed tube, P/N FW14193, and replace with parts eligible for installation. Use paragraph 3.B. or 3.C., as appropriate, of RR SB No. RB.211-72-H754, including the Supplement, Revision 1, dated July 29, 2015, to perform the parts replacement.
(2) Reserved.
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.
