# Proposed AD FAA-2004-18019: Honeywell International Inc. TFE731-2 and -3 Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-05-15
- Products: Honeywell International
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 16, 2004, 69 FR 33590
- Comments due: August 16, 2004
- Became: [AD 2005-05-15](https://openairdocs.org/ad/2005-05-15)
- Docket: FAA-2004-18019 (https://www.regulations.gov/docket/FAA-2004-18019, where comments are filed)
- Project: 2003-NE-65-AD
- FR document: 04-13563
- Official PDF: https://openairdocs.org/files/sha256/09/4b/094b70b1a735ff4b95db18e70d4b69af19283ab4b9433f9baa155082f50e12eb (from https://www.govinfo.gov/content/pkg/FR-2004-06-16/pdf/04-13563.pdf)
- Federal Register: https://www.federalregister.gov/documents/2004/06/16/04-13563/airworthiness-directives-honeywell-international-inc-tfe731-2-and--3-series-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E7D38A511D4BD20A86256EB5005A7D1A.0001
- Page: https://openairdocs.org/proposed/FAA-2004-18019

## 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 number (P/N) low pressure turbine (LPT) stage 1 disks installed. This proposed AD would require 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 proposed AD would also require for TFE731-3, -3A, -3AR, -3B, -3BR, and -3R series engines, replacement of LPT stage 1 disks with serviceable disks. This proposed AD also allows replacement of the LPT stage 1 disk with a disk having a part number not listed in the proposed AD as optional terminating action to the repetitive actions. This proposal results from a report of an uncontained failure of the LPT stage 1 disk installed in a TFE731-3-1H turbofan engine. We are proposing this AD to prevent additional uncontained failure of the LPT stage 1 disk, and possible damage to the airplane.

## Notices in this docket

- Jun 16, 2004: Notice of proposed rulemaking (NPRM). (first notice), FR document 04-13563, comments due Aug 16, 2004 (https://www.federalregister.gov/documents/2004/06/16/04-13563/airworthiness-directives-honeywell-international-inc-tfe731-2-and--3-series-turbofan-engines)

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