# Proposed AD FAA-2004-18496: Honeywell International Inc. (Formerly AlliedSignal Inc. and Garrett Turbine Engine Co.). TFE731-2 and -3 Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-13-07
- Products: Honeywell International
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 1, 2004, 69 FR 39875
- Comments due: August 30, 2004
- Became: [AD 2005-13-07](https://openairdocs.org/ad/2005-13-07)
- Docket: FAA-2004-18496 (https://www.regulations.gov/docket/FAA-2004-18496, where comments are filed)
- Project: 2004-NE-04-AD
- FR document: 04-14946
- Official PDF: https://openairdocs.org/files/sha256/14/e4/14e44e90ce050ff9535f3b842f289da515ea3d78b980d5fdd4d452ccdb438979 (from https://www.govinfo.gov/content/pkg/FR-2004-07-01/pdf/04-14946.pdf)
- Federal Register: https://www.federalregister.gov/documents/2004/07/01/04-14946/airworthiness-directives-honeywell-international-inc-formerly-alliedsignal-inc-and-garrett-turbine
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DA9BCFBA18E8DF9F86256EC4006276F8.0001
- Page: https://openairdocs.org/proposed/FAA-2004-18496

## Summary

The FAA proposes to adopt 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 numbers (P/Ns) and serial numbers (SNs) of low pressure (LP) 1st and 2nd stage turbine rotor discs initially installed as new parts before April 1, 1991. This proposed AD would require replacement of those LP 1st and 2nd stage turbine rotor discs. This proposed AD results from a report of an uncontained failure of an LP 2nd stage turbine rotor disc that caused an in-flight engine shutdown. We are proposing this AD to prevent LP turbine rotor disk separation, which could result in an uncontained engine failure and damage to the airplane.

## Notices in this docket

- Jul 1, 2004: Notice of proposed rulemaking (NPRM). (first notice), FR document 04-14946, comments due Aug 30, 2004 (https://www.federalregister.gov/documents/2004/07/01/04-14946/airworthiness-directives-honeywell-international-inc-formerly-alliedsignal-inc-and-garrett-turbine)

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