Summary
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.
Directive Details
AD Number
FAA-2012-0195
Document Number
2012-13082
Type
Rule
Publication Date
May 31, 2012
Effective Date
July 5, 2012
Affected Manufacturer
Honeywell International, Inc. Turbofan
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2012-0195
Topics
Official Documents
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