# Proposed AD 99-NM-365-AD: Boeing Model 767 Series Airplanes Powered by Pratt & Whitney Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2001-02-07
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 10, 2000, 65 FR 42306
- Comments due: August 24, 2000
- Became: [AD 2001-02-07](https://openairdocs.org/ad/2001-02-07)
- Docket: 99-NM-365-AD
- FR document: 00-17302
- Official PDF: https://openairdocs.org/files/sha256/09/cb/09cb9cdf3b520292e1b2b1e250fe18dfab6ac0f1db1e207b1aa5d266b622135f (from https://www.govinfo.gov/content/pkg/FR-2000-07-10/pdf/00-17302.pdf)
- Federal Register: https://www.federalregister.gov/documents/2000/07/10/00-17302/airworthiness-directives-boeing-model-767-series-airplanes-powered-by-pratt-and-whitney-engines
- Page: https://openairdocs.org/proposed/99-NM-365-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Boeing Model 767 series airplanes powered by Pratt & Whitney engines. This proposal would require modification of the nacelle strut and wing structure. This action is necessary to prevent fatigue cracking in primary strut structure and consequent reduced structural integrity of the strut. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Jul 10, 2000: Notice of proposed rulemaking (NPRM). (first notice), FR document 00-17302, comments due Aug 24, 2000 (https://www.federalregister.gov/documents/2000/07/10/00-17302/airworthiness-directives-boeing-model-767-series-airplanes-powered-by-pratt-and-whitney-engines)

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