Airworthiness Directives; AlliedSignal Inc. T5311, T5313, T5317, and T53 (Military) Series Engines
airworthiness · Rule · Final rule. · Published 1997-04-25 · Effective 1997-06-24 · 62 FR 20100
Document
Document number
97-10766
Federal Register citation
62 FR 20100
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
1997-04-25
Effective date
1997-06-24
FAA docket
Docket No. 96-ANE-25
Abstract
This amendment adopts a new airworthiness directive (AD), applicable to AlliedSignal Inc. (formerly Textron Lycoming) T5311, T5313, T5317, and T53 series military engines approved for installation on aircraft certified in accordance with Section 21.25 of the Federal Aviation Regulations (FAR), that requires removal and replacement of the N2 spur gear nut retainer (lock cup). This amendment is prompted by reports of N2 spur gear nut retainer (lock cup) separation. The actions specified by this AD are intended to prevent N2 accessory drive assembly disengagement due to N2 spur gear nut retainer (lock cup) separation, which could result in an uncommanded engine acceleration.