# Proposed AD 95-ANE-21: AlliedSignal Engines LTS101 Series Turboshaft Engines Installed on Eurocopter France Model AS-350D and SA- 366G1 Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 96-06-10
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 1, 1995, 60 FR 21053
- Comments due: June 30, 1995
- Became: [AD 96-06-10](https://openairdocs.org/ad/96-06-10)
- Docket: 95-ANE-21
- FR document: 95-10594
- Official PDF: https://openairdocs.org/files/sha256/cb/ac/cbac60e520236a04732c3acc993484cf51a488d8caa32c91aed2f80a95670299 (from https://www.govinfo.gov/content/pkg/FR-1995-05-01/pdf/95-10594.pdf)
- Federal Register: https://www.federalregister.gov/documents/1995/05/01/95-10594/airworthiness-directives-alliedsignal-engines-lts101-series-turboshaft-engines-installed-on
- Page: https://openairdocs.org/proposed/95-ANE-21

## Summary

This document proposes the adoption of a new airworthiness directive (AD), applicable to AlliedSignal Engines (formerly Textron Lycoming) LTS101 series turboshaft engines installed on Eurocopter France (formerly Aerospatiale) Model AS-350D and SA-366G1 helicopters. This proposal would require incorporation of design modifications to the power turbine (PT) rotor. This proposal is prompted by reports of PT disk failures after No. 3 bearing failures. The actions specified by the proposed AD are intended to prevent an uncontained engine failure due to a PT disk failure.

## Notices in this docket

- May 1, 1995: Notice of proposed rulemaking (NPRM). (first notice), FR document 95-10594, comments due Jun 30, 1995 (https://www.federalregister.gov/documents/1995/05/01/95-10594/airworthiness-directives-alliedsignal-engines-lts101-series-turboshaft-engines-installed-on)

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