# Proposed AD FAA-2010-0452: Pratt & Whitney JT8D-209, -217, -217A, -217C, and -219 Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2011-07-02
- Products: Pratt & Whitney Division
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 1, 2010, 75 FR 38052
- Comments due: August 30, 2010
- Became: [AD 2011-07-02](https://openairdocs.org/ad/2011-07-02)
- Docket: FAA-2010-0452 (https://www.regulations.gov/docket/FAA-2010-0452, where comments are filed)
- Project: 98-ANE-80-AD
- FR document: 2010-16010
- Official PDF: https://openairdocs.org/files/sha256/67/17/671733f7cdd1a74fee88e22eeaf5069e442097fa63260e9a4f92572177e37d4c (from https://www.govinfo.gov/content/pkg/FR-2010-07-01/pdf/2010-16010.pdf)
- Federal Register: https://www.federalregister.gov/documents/2010/07/01/2010-16010/airworthiness-directives-pratt-and-whitney-jt8d-209--217--217a--217c-and--219-series-turbofan
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C090BBB91A575F0486257753006A4C91.0001
- Page: https://openairdocs.org/proposed/FAA-2010-0452

## Summary

The FAA proposes to supersede an existing airworthiness directive (AD) for Pratt & Whitney (PW) JT8D-209, -217, -217A, -217C, and -219 series turbofan engines. That AD requires initial and repetitive torque inspections of the 3rd stage and 4th stage low- pressure turbine (LPT) blades for shroud notch wear and replacement of the blade if wear limits are exceeded. That AD also requires replacing LPT-to-exhaust case bolts and nuts with bolts and nuts made of Tinidur material. This proposed AD would require the same actions but would require replacement of the LPT-to-exhaust case bolts and nuts with longer bolts made of Tinidur material, with nuts made of Tinidur material, and installation of crushable sleeve spacers on the bolts. This proposed AD results from nine reports of failure of Tinidur material LPT-to-exhaust case bolts since AD 2005-02-03 became effective. We are proposing this AD to prevent turbine blade failures that could result in uncontained engine debris and damageto the airplane.

## Notices in this docket

- Jul 1, 2010: Notice of proposed rulemaking (NPRM). (first notice), FR document 2010-16010, comments due Aug 30, 2010 (https://www.federalregister.gov/documents/2010/07/01/2010-16010/airworthiness-directives-pratt-and-whitney-jt8d-209--217--217a--217c-and--219-series-turbofan)

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