# Proposed AD FAA-2007-29060: International Aero Engines (IAE)

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2010-06-18
- Products: International Aero Engines
- Product type: Engine
- Action: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period.
- Published: December 23, 2009, 74 FR 68192
- Comments due: February 22, 2010
- Became: [AD 2010-06-18](https://openairdocs.org/ad/2010-06-18)
- Docket: FAA-2007-29060 (https://www.regulations.gov/docket/FAA-2007-29060, where comments are filed)
- Project: 2007-NE-34-AD
- FR document: E9-30508
- Official PDF: https://openairdocs.org/files/sha256/48/85/48855c50e96b3c651cf5e64100db0f473ea63e5b779c873ccdcb2155d0182df1 (from https://www.govinfo.gov/content/pkg/FR-2009-12-23/pdf/E9-30508.pdf)
- Federal Register: https://www.federalregister.gov/documents/2009/12/23/E9-30508/airworthiness-directives-international-aero-engines-iae
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/82BA9C17C6D3F15C8625769C0058BEBF.0001
- Page: https://openairdocs.org/proposed/FAA-2007-29060

## Summary

This supplemental NPRM revises an earlier proposed airworthiness directive (AD) applicable to IAE V2500-A1, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, and V2533-A5 turbofan engines. That proposed AD would have required a one-time inspection of certain vortex reducers for cracks, and replacing the reducer and high-pressure (HP) compressor stage 3-8 drum if the reducer is cracked. That proposed AD resulted from reports of fractured vortex reducers found at shop visits. This supplemental NPRM revises the proposed AD to add four engine models and four additional part numbers of HP compressor stage 3-8 drums to the applicability requirement. This proposed AD results from the manufacturer's latest service information containing engine models and drum assembly P/Ns that were not specified in the proposed AD. We are proposing this AD to inspect for cracks in the vortex reducer. Cracks in the vortex reducer could result in an uncontained failure of the HP compressor stage 3-8 drum and subsequent damage to the airplane.

## Notices in this docket

- Apr 30, 2009: Notice of proposed rulemaking (NPRM). (first notice), FR document E9-9965, comments due Jun 29, 2009 (https://www.federalregister.gov/documents/2009/04/30/E9-9965/airworthiness-directives-international-aero-engines-iae)
- Dec 23, 2009: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period., FR document E9-30508, comments due Feb 22, 2010 (https://www.federalregister.gov/documents/2009/12/23/E9-30508/airworthiness-directives-international-aero-engines-iae)

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