# Proposed AD FAA-2018-0479: Honeywell International Inc. Turboprop and Turboshaft Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2018-17-15
- Products: Honeywell International
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 25, 2018, 83 FR 29479
- Comments due: August 9, 2018
- Became: [AD 2018-17-15](https://openairdocs.org/ad/2018-17-15)
- Docket: FAA-2018-0479 (https://www.regulations.gov/docket/FAA-2018-0479, where comments are filed)
- FR document: 2018-13523
- Official PDF: https://openairdocs.org/files/sha256/d9/d7/d9d7645ba02add15f2d74af891c1453e915cbc8a9119c808b14cb703483bdfe9 (from https://www.govinfo.gov/content/pkg/FR-2018-06-25/pdf/2018-13523.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/06/25/2018-13523/airworthiness-directives-honeywell-international-inc-turboprop-and-turboshaft-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/159CFE7D8826A169862582B7004BF33A.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0479

## Summary

We propose to supersede Airworthiness Directive (AD) 2018-02- 14, which applies to certain Honeywell International Inc. (Honeywell) TPE331 turboprop and TSE331 turboshaft engines. AD 2018-02-14 requires inspection of the affected combustion chamber case assembly, replacement of those assemblies found cracked, and removal of affected assemblies on certain TPE331 and TSE331 engines. Since we issued AD 2018-02-14, we received comments to revise the applicability of that AD to include the TPE331-12B engine model, correct certain TPE engine model typographical errors, and to allow certain weld repair procedures. This proposed AD would expand the applicability of AD 2018- 02-14 to include the TPE331-12B engine model, correct certain engine model typographical errors, and allow certain weld repair procedures after approval. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jun 25, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-13523, comments due Aug 9, 2018 (https://www.federalregister.gov/documents/2018/06/25/2018-13523/airworthiness-directives-honeywell-international-inc-turboprop-and-turboshaft-engines)

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