# Proposed AD 2002-NE-27-AD: Pratt & Whitney JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2003-05-07
- Products: Pratt & Whitney
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 15, 2002, 67 FR 69152
- Comments due: January 14, 2003
- Became: [AD 2003-05-07](https://openairdocs.org/ad/2003-05-07)
- Docket: 2002-NE-27-AD
- FR document: 02-29002
- Official PDF: https://openairdocs.org/files/sha256/9c/91/9c9156f5620bc33690b7e686745aeabd4598068a62e73cb208e26f2be5fcfec2 (from https://www.govinfo.gov/content/pkg/FR-2002-11-15/pdf/02-29002.pdf)
- Federal Register: https://www.federalregister.gov/documents/2002/11/15/02-29002/airworthiness-directives-pratt-and-whitney-jt8d-1--1a--1b--7--7a--7b--9--9a--11--15--15a--17--17a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/36BA4D09A662716986256C7200537952.0001
- Page: https://openairdocs.org/proposed/2002-NE-27-AD

## Summary

The Federal Aviation Administration (FAA) proposes to adopt a new airworthiness directive (AD) that is applicable to Pratt & Whitney JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A, -11, -15, -15A, -17, -17A, -17R, and -17AR turbofan engines. This proposal would require removal from service of certain part number (P/N) 3rd-4th and 4th-5th stage compressor rotor spacer assemblies and incorporation of a new tierod retention configuration. This proposal is prompted by two reports of uncontained failure of JT8D turbofan engines, caused by turbine rotor overspeed resulting from first and second stage fan section separation from the low pressure compressor (LPC). The actions specified by the proposed AD are intended to prevent first and second stage fan section separation from the LPC, resulting in turbine rotor overspeed, uncontained engine failure, and damage to the airplane.

## Notices in this docket

- Nov 15, 2002: Notice of proposed rulemaking (NPRM). (first notice), FR document 02-29002, comments due Jan 14, 2003 (https://www.federalregister.gov/documents/2002/11/15/02-29002/airworthiness-directives-pratt-and-whitney-jt8d-1--1a--1b--7--7a--7b--9--9a--11--15--15a--17--17a)

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