# Airworthiness Directives; Pratt & Whitney JT3D Series Turbofan Engines
> **Rule** · Final rule. · Published 1996-11-20 · Effective 1997-01-21 · 61 FR 58975
## Document
- **Document number:** 96-28988
- **Category:** airworthiness
- **Manufacturer:** Pratt & Whitney JT3D Series Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 61 FR 58975
- **Publication date:** 1996-11-20
- **Effective date:** 1997-01-21
- **FAA docket:** Docket No. 95-ANE-45
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to Pratt & Whitney (PW) JT3D series turbofan engines, that requires inspection of steel high pressure compressor (HPC) disks for corrosion, recoating or replating those disks, or replacing those disks as necessary. This amendment is prompted by reports of a failure of a PW JT8D steel HPC disk, which is similar in design to the PW JT3D steel HPC disks. The actions specified by this AD are intended to prevent steel HPC disk failure due to corrosion, which could result in an uncontained engine failure and damage to the aircraft.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1996/11/20/96-28988/airworthiness-directives-pratt-and-whitney-jt3d-series-turbofan-engines)
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