# Proposed AD FAA-2017-0034: Honeywell International Inc. Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2017-20-06
- Products: Honeywell International
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 20, 2017, 82 FR 28028
- Comments due: August 4, 2017
- Became: [AD 2017-20-06](https://openairdocs.org/ad/2017-20-06)
- Docket: FAA-2017-0034 (https://www.regulations.gov/docket/FAA-2017-0034, where comments are filed)
- Project: 2016-NE-32-AD
- FR document: 2017-12561
- Official PDF: https://openairdocs.org/files/sha256/7e/e8/7ee8db0e10f60ceec24376e70056e120f0dde764bc0fa4c153e7d0dc25806182 (from https://www.govinfo.gov/content/pkg/FR-2017-06-20/pdf/2017-12561.pdf)
- Federal Register: https://www.federalregister.gov/documents/2017/06/20/2017-12561/airworthiness-directives-honeywell-international-inc-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/44AB2E14B2B4E12686258145004DEB70.0001
- Page: https://openairdocs.org/proposed/FAA-2017-0034

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Honeywell International Inc. (Honeywell) AS907-1-1A turbofan engines. This proposed AD was prompted by reports of loss of power due to failure of the second stage low-pressure turbine (LPT2) blade. This proposed AD would require a one-time inspection of the LPT2 blades and, if the blades fail the inspection, the replacement of the blades with a part eligible for installation. We are proposing this AD to correct the unsafe condition on these products.

## Notices in this docket

- Jun 20, 2017: Notice of proposed rulemaking (NPRM). (first notice), FR document 2017-12561, comments due Aug 4, 2017 (https://www.federalregister.gov/documents/2017/06/20/2017-12561/airworthiness-directives-honeywell-international-inc-turbofan-engines)

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