# Proposed AD 98-NM-282-AD: Boeing Model 747 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2000-02-10
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 20, 1999, 64 FR 45466
- Comments due: October 4, 1999
- Became: [AD 2000-02-10](https://openairdocs.org/ad/2000-02-10)
- Docket: 98-NM-282-AD
- FR document: 99-21693
- Official PDF: https://openairdocs.org/files/sha256/4d/8a/4d8abf2429599800ebe05591e75bf7a09cd93548ac627dfbfabd5840e5f740a1 (from https://www.govinfo.gov/content/pkg/FR-1999-08-20/pdf/99-21693.pdf)
- Federal Register: https://www.federalregister.gov/documents/1999/08/20/99-21693/airworthiness-directives-boeing-model-747-series-airplanes
- Page: https://openairdocs.org/proposed/98-NM-282-AD

## Summary

This document proposes the adoption of a new airworthiness directive. (AD) that is applicable to certain Boeing Model 747 series airplanes. This proposal would require repetitive inspections to detect broken fasteners and cracking of the forward edge frame for main entry door number 3, and repair, if necessary. This proposal is prompted by reports of fatigue cracks at the inner chord and web of the body station 1265 edge frame between stringers 23 and 27. The actions specified by the proposed AD are intended to detect and correct such cracking, which could result in rapid depressurization of the airplane.

## Notices in this docket

- Aug 20, 1999: Notice of proposed rulemaking (NPRM). (first notice), FR document 99-21693, comments due Oct 4, 1999 (https://www.federalregister.gov/documents/1999/08/20/99-21693/airworthiness-directives-boeing-model-747-series-airplanes)

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