Airworthiness Directives; AlliedSignal, Inc. (formerly Textron Lycoming) Models LTS101-650B1, -750B1, -650C, and -750C Turboshaft Engines
airworthiness · Rule · Final rule. · Published 1996-02-22 · Effective 1996-04-22 · 61 FR 6766
Document
Document number
96-2589
Federal Register citation
61 FR 6766
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
1996-02-22
Effective date
1996-04-22
FAA docket
Docket No. 95-ANE-08
Abstract
This amendment adopts a new airworthiness directive (AD), applicable to AlliedSignal, Inc. (formerly Textron Lycoming) Models LTS101-650B1, -750B1, -650C, and -750C turboshaft engines, that requires installation of an improved power turbine (PT) rotor and electronic PT rotor overspeed controller as a terminating action to the currently required inspections of AD 88-14-01. This amendment is prompted by reports of additional bearing failures since publication of AD 88-14-01, including one additional uncontained PT disk failure. The actions specified by this AD are intended to prevent PT overspeed and uncontained engine failure.