# Proposed AD FAA-2007-28058: International Aero Engines AG (IAE) V2500 Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2008-14-15
- Products: International Aero Engines
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 9, 2007, 72 FR 37126
- Comments due: September 7, 2007
- Became: [AD 2008-14-15](https://openairdocs.org/ad/2008-14-15)
- Docket: FAA-2007-28058 (https://www.regulations.gov/docket/FAA-2007-28058, where comments are filed)
- Project: 2007-NE-08-AD
- FR document: E7-13256
- Official PDF: https://openairdocs.org/files/sha256/9e/98/9e98c6da898d6b55d481430d34d98f7cc1b686d4586bf1b036a9b7c241b85e67 (from https://www.govinfo.gov/content/pkg/FR-2007-07-09/pdf/E7-13256.pdf)
- Federal Register: https://www.federalregister.gov/documents/2007/07/09/E7-13256/airworthiness-directives-international-aero-engines-ag-iae-v2500-series-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/45B7CD3E09E4F7A78625731300562727.0001
- Page: https://openairdocs.org/proposed/FAA-2007-28058

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for IAE V2500-A1, V2522-A5, V2524-A5, V2527-A5, V2527E-A5, V2527M-A5, V2530-A5, V2533-A5, V2525-D5, V2528-D5 turbofan engines. This proposed AD would require removing certain No. 4 bearing seal components from service at the next shop visit or by an end date determined by the engine model. This proposed AD results from instances of oil loss from the No. 4 bearing compartment. We are proposing this AD to prevent heat damage to high pressure turbine (HPT) and low pressure turbine (LPT) critical life limited hardware such as the HPT stage 1-2 airseal. Damage to the HPT stage 1-2 airseal could cause uncontained engine failure and damage to the airplane.

## Notices in this docket

- Jul 9, 2007: Notice of proposed rulemaking (NPRM). (first notice), FR document E7-13256, comments due Sep 7, 2007 (https://www.federalregister.gov/documents/2007/07/09/E7-13256/airworthiness-directives-international-aero-engines-ag-iae-v2500-series-turbofan-engines)

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