# Airworthiness Directives; Honeywell International Inc. TFE731-2 and -3 Series Turbofan Engines
> **Rule** · Final rule. · Published 2005-03-14 · Effective 2005-04-18 · 70 FR 12404
## Document
- **Document number:** 05-4686
- **Category:** airworthiness
- **Manufacturer:** Honeywell International Inc. TFE731-2 and -3 Series Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 70 FR 12404
- **Publication date:** 2005-03-14
- **Effective date:** 2005-04-18
- **FAA docket:** Docket No. FAA-2004-18019
## Abstract

The FAA is adopting a new airworthiness directive (AD) for Honeywell International Inc. (formerly AlliedSignal Inc. and Garrett Turbine Engine Co.) TFE731-2 and -3 series turbofan engines with certain part number (P/N) low pressure turbine (LPT) stage 1 disks installed. This AD requires for TFE731-2 and -2C series engines, initial and repetitive measurements and calculations to determine acceptance, and adjustment or replacement if necessary, of the LPT stage 1 nozzle assembly. This AD also requires for TFE731-3, -3A, -3AR, -3B, -3BR, and -3R series engines, replacement of LPT stage 1 disks with serviceable disks. This AD also allows replacement of the LPT stage 1 disk with a disk having a part number not listed in the AD as optional terminating action to the repetitive actions. This AD results from a report of an uncontained failure of the LPT stage 1 disk installed in a TFE731-3-1H turbofan engine. We are issuing this AD to prevent additional uncontained failure of the LPT stage 1 disk, and possible damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/03/14/05-4686/airworthiness-directives-honeywell-international-inc-tfe731-2-and--3-series-turbofan-engines)
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