# Airworthiness Directives; Boeing Model 767 Series Airplanes Powered by Pratt & Whitney Engines
> **Rule** · Final rule. · Published 2001-01-29 · Effective 2001-03-05 · 66 FR 8085
## Document
- **Document number:** 01-1947
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 767 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 66 FR 8085
- **Publication date:** 2001-01-29
- **Effective date:** 2001-03-05
- **FAA docket:** Docket No. 99-NM-365-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 767 series airplanes powered by Pratt & Whitney engines, that requires modification of the nacelle strut and wing structure. The actions specified by this AD are intended to prevent fatigue cracking in primary strut structure and consequent reduced structural integrity of the strut.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/01/29/01-1947/airworthiness-directives-boeing-model-767-series-airplanes-powered-by-pratt-and-whitney-engines)
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