airworthiness · Rule · Final rule; request for comments. · Published 2006-02-01 · Effective 2006-02-16 · 71 FR 5162
Document
Document number
06-826
Federal Register citation
71 FR 5162
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Publication date
2006-02-01
Effective date
2006-02-16
FAA docket
Docket No. FAA-2005-23031
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Rolls-Royce plc (RR) RB211 Trent 553-61, 553A2-61, 556-61, 556A2-61, 556B-61, 556B2-61, 560-61, and 560A2-61 turbofan engines. This AD requires initial and repetitive borescope inspections for missing HPT rear seal plate locking plugs and damaged locking plug retaining wires, and removal of the engine from service if necessary, based on inspection results. This AD results from two reports of missing HPT rear seal plate locking plugs, damage to the HPT disc, and damage to the remaining locking plug retaining wires. We are issuing this AD to prevent uncontained release of the HPT rear side plate and HPT disc, resulting in damage to the airplane.