# Proposed AD FAA-2014-1127: Pratt & Whitney Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2015-14-05
- Products: Pratt & Whitney
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 2, 2015, 80 FR 11140
- Comments due: May 1, 2015
- Became: [AD 2015-14-05](https://openairdocs.org/ad/2015-14-05)
- Docket: FAA-2014-1127 (https://www.regulations.gov/docket/FAA-2014-1127, where comments are filed)
- Project: 2014-NE-16-AD
- FR document: 2015-04059
- Official PDF: https://openairdocs.org/files/sha256/37/6c/376ce223987b67f2cb7083c74bc089481beedbd90dd7b6515fe1cd0316116690 (from https://www.govinfo.gov/content/pkg/FR-2015-03-02/pdf/2015-04059.pdf)
- Federal Register: https://www.federalregister.gov/documents/2015/03/02/2015-04059/airworthiness-directives-pratt-and-whitney-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A1304C58B3BE057086257DFC004B7CD0.0001
- Page: https://openairdocs.org/proposed/FAA-2014-1127

## Summary

We propose to adopt a new airworthiness directive (AD) for all Pratt & Whitney (PW) JT8D-217C and JT8D-219 turbofan engines. This proposed AD was prompted by reports of cracking in the low-pressure turbine (LPT) shaft. This proposed AD establishes a new lower life limit for these parts and would require removing affected LPT shafts from service using a drawdown plan. We are proposing this AD to prevent failure of the LPT shaft, which could lead to an uncontained engine failure and damage to the airplane.

## Notices in this docket

- Mar 2, 2015: Notice of proposed rulemaking (NPRM). (first notice), FR document 2015-04059, comments due May 1, 2015 (https://www.federalregister.gov/documents/2015/03/02/2015-04059/airworthiness-directives-pratt-and-whitney-turbofan-engines)

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