Airworthiness directives › 2012-02-11
AD 2012-02-11 Airworthiness Directives; Rolls-Royce plc (RR) RB211-535 Series Turbofan Engine
Applicability*9
This AD applies to Rolls-Royce plc RB211-535E4-37, -535E4-B-37, -535E4-B-75, and -535E4-C-37 turbofan engines.
Compliance
For the purpose of this AD, an “engine shop visit” is induction of an engine into the shop for any purpose where: (1) All the blades are removed from the high-pressure (HP) compressor discs and the HP turbine disc, or (2) All the blades are removed from the intermediate pressure turbine disc.
Required actions
The Manager, Engine Certification Office, FAA may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request.
Unsafe condition
Comply with this AD within the compliance times specified, unless already done. (1) Initial Inspection Requirements At the next engine shop visit after the effective date of this AD, perform a visual and a fluorescent penetrant inspection of the LP turbine stage 1, 2, and 3 discs. (2) Repeat Inspection Requirements At each engine shop visit after accumulating 1,500 cycles since the last inspection of the LP turbine stage 1, 2 and 3 discs, repeat the inspections specified in paragraph (e)(1) of this AD. (3) Remove Cracked Discs If you find cracks, remove the disc from service.
Affected ADs
This AD supersedes AD 2011-11-08, Amendment 39-16707 (76 FR 30529, May 26, 2011).
Read the original on the Federal Register →
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