Airworthiness Directives; Rolls-Royce plc RB211-524 and -535 Series Turbofan Engines
airworthiness · Rule · Final rule. · Published 2007-07-12 · Effective 2007-08-16 · 72 FR 38002
Document
Document number
E7-13410
Federal Register citation
72 FR 38002
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Rolls-Royce plc RB211-524 and -535 Series Turbofan
Publication date
2007-07-12
Effective date
2007-08-16
FAA docket
Docket No. FAA-2006-24325
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Rolls-Royce plc (RR) RB211-524 and -535 series turbofan engines. This AD requires initial and repetitive fluorescent penetrant inspections (FPI) of the high pressure (HP) compressor stage 1 and 2 rotor discs for cracks. This AD results from reports of low-cycle- fatigue cracks found at overhaul in the interface weld between the HP compressor stage 1 and 2 rotor disc. We are issuing this AD to prevent uncontained engine failure and damage to the airplane.