Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (RRD) Turbofan Engines
airworthiness · Rule · Final rule; rescission. · Published 2012-07-02 · Effective 2012-08-06 · 77 FR 39156
Document
Document number
2012-15961
Federal Register citation
77 FR 39156
Type
Rule
Action
Final rule; rescission.
Category
airworthiness
Manufacturer
Rolls-Royce Deutschland Ltd & Co KG (RRD) Turbofan
Publication date
2012-07-02
Effective date
2012-08-06
FAA docket
Docket No. FAA-2008-0224
Abstract
We are rescinding an airworthiness directive (AD) for RRD BR700-715A1-30, BR700-715B1-30, and BR700-715C1-30 turbofan engines. The existing AD resulted from the need to reduce the published life limits of high-pressure (HP) turbine stage 1 discs, part numbers (P/Ns) BRH20130 and BRH20131, and HP turbine stage 2 discs, P/Ns BRH19423 and BRH19427. We are rescinding the existing AD because RRD has revised the approved published life limits of these parts to the same or higher limits as originally certified.