# Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines
> **Rule** · Final rule. · Published 2000-06-15 · Effective 2000-09-13 · 65 FR 37473
## Document
- **Document number:** 00-14789
- **Category:** airworthiness
- **Manufacturer:** Pratt & Whitney PW4000 Series Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 65 FR 37473
- **Publication date:** 2000-06-15
- **Effective date:** 2000-09-13
- **FAA docket:** Docket No. 98-ANE-66-AD
## Abstract

This amendment supersedes an existing airworthiness directive (AD), applicable to certain Pratt & Whitney PW4000 Series Turbofan Engines, that currently requires revisions to the Time Limits Section of the manufacturer's Engine Manuals (EM's) to include required enhanced inspection of selected critical life-limited parts at each piece-part exposure. This action adds additional critical life-limited parts for enhanced inspection. This amendment is prompted by additional focused inspection procedures for other critical life-limited rotating engine parts that have been developed by the manufacturer. The actions specified by this AD are intended to prevent critical life-limited rotating engine part failure, which could result in an uncontained engine failure and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2000/06/15/00-14789/airworthiness-directives-pratt-and-whitney-pw4000-series-turbofan-engines)
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