Airworthiness Directive · Amendment 39-19394 · Turbine engine compressor section
Rolls-Royce plc Turbofan Engines
This AD applies to certain Rolls-Royce plc (RR) RB211-Trent 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17 and 895-17 turbofan engines with an engine serial number listed in Section 1.A., Effectivity, of RR Alert Non-Modification Service Bulletin (NMSB) RB.211-72-AJ463, Revision 2, dated June 28, 2017.
We are adopting a new airworthiness directive (AD) for certain 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. This AD was prompted by low-pressure compressor (LPC) case A-frame hollow locating pins that may have reduced integrity due to incorrect heat treatment. This AD requires replacement of the LPC case A-frame hollow locating pins. We are issuing this AD to address the unsafe condition on these products.
(1) For engines installed on-wing, after the effective date of this AD, replace each affected LPC case A-frame hollow locating pin, part number (P/N) FK11612, within the compliance times specified in RR Alert NMSB RB.211-72-AJ463, Planning Information, Section 1.D.(1), or within 30 days after the effective date of this AD, whichever occurs later, with a part eligible for installation.
(2) After the effective date of this AD, unless already accomplished by paragraph (g)(1) of this AD, at the next engine shop visit, replace each affected LPC case A-frame hollow locating pin, P/N FK11612, with a part eligible for installation.
(3) Use Section 3, Accomplishment Instructions, of RR Alert NMSB RB.211-72-AJ463, Revision 2, dated June 28, 2017, to perform the replacements required by paragraphs (g)(1) and (2) of this AD.
After the effective date of this AD, an engine with an affected LPC case A-frame hollow location pin, P/N FK11612, may not be installed on an airplane and subsequently operated. It is permissible to install an engine on an airplane with an affected pin if it is replaced with a part eligible for installation before engine operation.
For the purposes of this AD:
(1) An affected part is an LPC case A-frame hollow locating pin, P/N FK11612, except those with an original RR authorized release certificate dated July 5, 2016, or later.
(2) A part eligible for installation is an LPC case A-frame hollow locating pin, P/N FK11612, with an original RR authorized release certificate dated July 5, 2016, or later.
(3) An engine shop visit is when the engine is subject to a serviceability check and repair, rebuild, or overhaul.
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.
