Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines
airworthiness · Rule · Final rule; request for comments. · Published 2012-11-29 · Effective 2012-12-14 · 77 FR 71085
Document
Document number
2012-28638
Federal Register citation
77 FR 71085
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Rolls-Royce Deutschland Ltd & Co KG Turbofan
Publication date
2012-11-29
Effective date
2012-12-14
FAA docket
Docket No. FAA-2012-1056
Abstract
We are adopting a new airworthiness directive (AD) for certain serial number (S/N) Rolls-Royce Deutschland Ltd & Co KG (RRD) TAY 620- 15 turbofan engines. This AD requires initial and repetitive general inspections and ultrasonic inspections (UI) of low-pressure compressor (LPC) fan blades for cracks. If any fan blade is found cracked, this AD requires replacement of the LPC fan blade set and the LPC fan disc. This AD was prompted by a report of an LPC fan blade separation. We are issuing this AD to detect cracks in the LPC fan blades, which could lead to uncontained failure of the LPC fan blades and LPC fan disc, and damage to the airplane.