airworthiness · Rule · Final rule; request for comments. · Published 2014-10-30 · Effective 2014-11-14 · 79 FR 64504
Document
Document number
2014-25739
Federal Register citation
79 FR 64504
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Rolls-Royce plc Turbofan
Publication date
2014-10-30
Effective date
2014-11-14
FAA docket
Docket No. FAA-2014-0705
Abstract
We are adopting a new airworthiness directive (AD) for all Rolls-Royce plc (RR) Trent 1000-A, 1000-C, 1000-D, 1000-E, 1000-G, and 1000-H turbofan engines. This AD requires removing engine electronic controller (EEC) software earlier than standard MB6.15 and replacing with a software standard eligible for installation. This AD was prompted by a finding that an intermediate pressure (IP) shaft failure may not be detected by EEC software earlier than standard MB6.15. We are issuing this AD to detect IP shaft failure and prevent IP compressor turbine burst, uncontained engine failure, and damage to the airplane.