# Airworthiness Directives; AlliedSignal Aerospace GTCP85 Series Auxiliary Power Units
> **Rule** · Final rule. · Published 1995-04-03 · Effective 1995-05-03 · 60 FR 16780
## Document
- **Document number:** 95-7682
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 60 FR 16780
- **Publication date:** 1995-04-03
- **Effective date:** 1995-05-03
- **FAA docket:** Docket No. 94-ANE-17
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to AlliedSignal Aerospace (formerly Garrett Auxiliary Power Division and Garrett Turbine Engine Co.) GTCP85 series auxiliary power units (APU), that requires modifying the APU to install an exhaust centerbody. This amendment is prompted by reports of two uncontained APU failures where turbine wheel fragments exited the APU exhaust axially and damaged the aircraft. The actions specified by this AD are intended to prevent an axially uncontained APU failure and damage to the aircraft.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1995/04/03/95-7682/airworthiness-directives-alliedsignal-aerospace-gtcp85-series-auxiliary-power-units)
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