Airworthiness Directives; Honeywell International, Inc. Turbofan Engines
airworthiness · Rule · Final rule. · Published 2012-05-31 · Effective 2012-07-05 · 77 FR 32009
Document
Document number
2012-13082
Federal Register citation
77 FR 32009
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2012-05-31
Effective date
2012-07-05
FAA docket
Docket No. FAA-2012-0195
Abstract
We are adopting a new airworthiness directive (AD) for all Honeywell International, Inc. ALF502L-2C; ALF502R-3; ALF502R-3A; ALF502R-5; LF507-1F; and LF507-1H turbofan engines. This AD was prompted by two reports of engines experiencing uncontained release of low-pressure (LP) turbine blades. This AD requires operational checks of the engine overspeed trip system. We are issuing this AD to prevent LP turbine overspeed leading to uncontained release of the LP turbine blades and damage to the airplane.