federal_register: E9-30508
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| document_number | title | type | abstract | publication_date | pub_year | pub_month | html_url | pdf_url | agency_names | agency_ids | excerpts |
|---|---|---|---|---|---|---|---|---|---|---|---|
| E9-30508 | Airworthiness Directives; International Aero Engines (IAE) | Proposed Rule | 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. | 2009-12-23 | 2009 | 12 | https://www.federalregister.gov/documents/2009/12/23/E9-30508/airworthiness-directives-international-aero-engines-iae | https://www.govinfo.gov/content/pkg/FR-2009-12-23/pdf/E9-30508.pdf | Transportation Department; Federal Aviation Administration | 492,159 | 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... |