# Proposed AD 2002-NM-24-AD: Boeing Model 747 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2002-23-21
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 1, 2002, 67 FR 44116
- Comments due: August 15, 2002
- Became: [AD 2002-23-21](https://openairdocs.org/ad/2002-23-21)
- Docket: 2002-NM-24-AD
- FR document: 02-16406
- Official PDF: https://openairdocs.org/files/sha256/59/c2/59c2811a3d2adda58ea6cc896f36fc7a984b1c6e903be5b9cb4be899db82de68 (from https://www.govinfo.gov/content/pkg/FR-2002-07-01/pdf/02-16406.pdf)
- Federal Register: https://www.federalregister.gov/documents/2002/07/01/02-16406/airworthiness-directives-boeing-model-747-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/78DA612210A6EA2786256BE90063D485.0001
- Page: https://openairdocs.org/proposed/2002-NM-24-AD

## Summary

This document proposes the supersedure of an existing airworthiness directive (AD), applicable to certain Boeing Model 747 series airplanes, that currently requires inspection of the flap tracks of the wing trailing edge flaps for adequate cadmium plating and for corrosion of certain bolt holes of the fail-safe bar, and plating of such holes, if necessary. This new action would require post- modification inspections of certain bolt holes of the fail-safe bar of the flap tracks of the wing trailing edge flaps for discrepancies, and corrective actions, if necessary. This proposal is prompted by reports of corrosion and cracks found in certain bolt holes reworked according to the existing AD. The actions specified by the proposed AD are intended to find and fix discrepancies of the bolt holes, which could result in fracture of the flap track, separation of the flap, and consequent loss of control of the airplane. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Jul 1, 2002: Notice of proposed rulemaking (NPRM). (first notice), FR document 02-16406, comments due Aug 15, 2002 (https://www.federalregister.gov/documents/2002/07/01/02-16406/airworthiness-directives-boeing-model-747-series-airplanes)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.