# Proposed AD FAA-2015-2208: Honeywell International Inc. (Type Certificate Previously Held by AlliedSignal Inc., Garrett Turbine Engine Company) Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2016-07-02
- Products: Honeywell International
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 29, 2015, 80 FR 66481
- Comments due: December 28, 2015
- Became: [AD 2016-07-02](https://openairdocs.org/ad/2016-07-02)
- Docket: FAA-2015-2208 (https://www.regulations.gov/docket/FAA-2015-2208, where comments are filed)
- Project: 2015-NE-19-AD
- FR document: 2015-27555
- Official PDF: https://openairdocs.org/files/sha256/7b/49/7b49cc2e944c9a958c0f70111b58ca64276e107b75f128473c45c0660cee83d5 (from https://www.govinfo.gov/content/pkg/FR-2015-10-29/pdf/2015-27555.pdf)
- Federal Register: https://www.federalregister.gov/documents/2015/10/29/2015-27555/airworthiness-directives-honeywell-international-inc-type-certificate-previously-held-by
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5C290226402EBA3086257EED004EDBA4.0001
- Page: https://openairdocs.org/proposed/FAA-2015-2208

## Summary

We propose to adopt a new airworthiness directive (AD) for Honeywell International Inc. TFE731-4, -4R, -5AR, -5BR, and -5R turbofan engines. This proposed AD was prompted by a report of certain interstage turbine transition (ITT) ducts failing to meet containment capability requirements. This proposed AD would require replacing certain ITT ducts. We are proposing this AD to prevent failure of the ITT duct, which could lead to an uncontained part release, damage to the engine, and damage to the airplane.

## Notices in this docket

- Oct 29, 2015: Notice of proposed rulemaking (NPRM). (first notice), FR document 2015-27555, comments due Dec 28, 2015 (https://www.federalregister.gov/documents/2015/10/29/2015-27555/airworthiness-directives-honeywell-international-inc-type-certificate-previously-held-by)

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