# Proposed AD 2003-NE-02-AD: Honeywell International Inc. (formerly AlliedSignal Inc., Garrett Turbine Engine Company, and AiResearch Manufacturing Company of Arizona) TPE331-10 and -11 Series Turboprop Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2004-09-29
- Products: Honeywell International
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 8, 2003, 68 FR 47267
- Comments due: October 7, 2003
- Became: [AD 2004-09-29](https://openairdocs.org/ad/2004-09-29)
- Docket: 2003-NE-02-AD
- FR document: 03-20231
- Official PDF: https://openairdocs.org/files/sha256/6b/08/6b08232e180f59d21e31fe4eb2a04c3a65fa41a088a695976ef104d2e80c508b (from https://www.govinfo.gov/content/pkg/FR-2003-08-08/pdf/03-20231.pdf)
- Federal Register: https://www.federalregister.gov/documents/2003/08/08/03-20231/airworthiness-directives-honeywell-international-inc-formerly-alliedsignal-inc-garrett-turbine
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A4577B7F96685BBC86256D7C004FBB79.0001
- Page: https://openairdocs.org/proposed/2003-NE-02-AD

## Summary

The FAA is proposing to adopt a new airworthiness directive (AD) that applies to Honeywell International Inc. (formerly AlliedSignal Inc., Garrett Turbine Engine Company, and AiResearch Manufacturing Company of Arizona) TPE331-10 and -11 series turboprop engines with certain part numbers and serial numbers of first stage turbine disks. This proposal would require initial and repetitive fluorescent penetrant inspections (FPIs) and eddy current inspections (ECIs) of the affected first stage turbine disks. This proposal is prompted by a report of a first stage turbine disk found cracked at the disk bore. We are proposing this AD to prevent cracked first stage turbine disks from causing uncontained disk separation, resulting in engine damage and shutdown.

## Notices in this docket

- Aug 8, 2003: Notice of proposed rulemaking (NPRM). (first notice), FR document 03-20231, comments due Oct 7, 2003 (https://www.federalregister.gov/documents/2003/08/08/03-20231/airworthiness-directives-honeywell-international-inc-formerly-alliedsignal-inc-garrett-turbine)

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