# Proposed AD FAA-2009-0544: International Aero Engines AG (IAE) V2500-A1, V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, and V2533-A5 Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2009-12-51
- Products: International Aero Engines
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 12, 2010, 75 FR 6860
- Comments due: April 13, 2010
- Became: [AD 2009-12-51](https://openairdocs.org/ad/2009-12-51)
- Docket: FAA-2009-0544 (https://www.regulations.gov/docket/FAA-2009-0544, where comments are filed)
- Project: 2009-NE-37-AD
- FR document: 2010-2999
- Official PDF: https://openairdocs.org/files/sha256/3e/58/3e58ff0981042d7e7d58b97139922def98e9ad7740a6d73ddb90920e09f9af0c (from https://www.govinfo.gov/content/pkg/FR-2010-02-12/pdf/2010-2999.pdf)
- Federal Register: https://www.federalregister.gov/documents/2010/02/12/2010-2999/airworthiness-directives-international-aero-engines-ag-iae-v2500-a1-v2522-a5-v2524-a5-v2525-d5
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8B9F00B79C38020A862576C80051B03D.0001
- Page: https://openairdocs.org/proposed/FAA-2009-0544

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all International Aero Engines AG (IAE) V2500-A1, V2525-D5 and V2528-D5 turbofan engines and certain serial numbers (S/Ns) of IAE V2522-A5, V2524-A5, V2527-A5, V2527E-A5, V2527M-A5, V2530-A5, and V2533-A5 turbofan engines. For certain S/Ns of V2500-A1, V2522-A5, V2524-A5, V2527-A5, V2527E-A5, V2527M-A5, V2530-A5, and V2533-A5 series turbofan engines, this proposed AD would require initial and repetitive on-wing ultrasonic inspections (UIs) of the high-pressure compressor (HPC) stage 3 to 8 drum for cracks. As mandatory terminating action to the repetitive inspections, this proposed AD would require removal from service of the fully silver plated nuts attaching the HPC stage 3 to 8 drum to the HPC stage 9 to 12 drum, removal of silver residue from the HPC stage 3 to 8 drum, and fluorescent penetrant inspection (FPI) of the stage 3 to 8 drum within a specified time. For all other engines, this proposed AD would require removal from service of the fully silver plated nuts attaching the HPC stage 3 to 8 drum to the HPC stage 9 to 12 drum, removal of silver residue from the HPC stage 3 to 8 drum, and FPI of the HPC stage 3 to 8 drum at the next drum piece-part exposure. This proposed AD results from reports of 39 HPC stage 3 to 8 drums found cracked since March 2009. We are proposing this AD to prevent uncontained failure of the HPC stage 3 to 8 drum, which could result in damage to the airplane.

## Notices in this docket

- Feb 12, 2010: Notice of proposed rulemaking (NPRM). (first notice), FR document 2010-2999, comments due Apr 13, 2010 (https://www.federalregister.gov/documents/2010/02/12/2010-2999/airworthiness-directives-international-aero-engines-ag-iae-v2500-a1-v2522-a5-v2524-a5-v2525-d5)

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