# Proposed AD 95-ANE-08: AlliedSignal Engines (Formerly Textron Lycoming) Models LTS101-650B1, -750B1, -650C, and -750C Turboshaft Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 95-26-01
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 19, 1995, 60 FR 26846
- Comments due: July 18, 1995
- Became: [AD 95-26-01](https://openairdocs.org/ad/95-26-01)
- Docket: 95-ANE-08
- FR document: 95-12330
- Official PDF: https://openairdocs.org/files/sha256/88/8e/888e0be5a5171cc9535287043be0aee75a472c71d9adeea43b5e2f56f83a945f (from https://www.govinfo.gov/content/pkg/FR-1995-05-19/pdf/95-12330.pdf)
- Federal Register: https://www.federalregister.gov/documents/1995/05/19/95-12330/airworthiness-directives-alliedsignal-engines-formerly-textron-lycoming-models-lts101-650b1--750b1
- Page: https://openairdocs.org/proposed/95-ANE-08

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to AlliedSignal Engines (formerly Textron Lycoming) Models LTS101-650B1, -750B1, -650C, and -750C turboshaft engines. This proposal would require 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 proposal 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 the proposed AD are intended to prevent PT overspeed and uncontained engine failure.

## Notices in this docket

- May 19, 1995: Notice of proposed rulemaking (NPRM). (first notice), FR document 95-12330, comments due Jul 18, 1995 (https://www.federalregister.gov/documents/1995/05/19/95-12330/airworthiness-directives-alliedsignal-engines-formerly-textron-lycoming-models-lts101-650b1--750b1)

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