# Proposed AD 99-NM-322-AD: Airbus Model A300 B4-600 and A300 B4-600R Series Airplanes, and Model A300 F4-605R Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2002-11-04
- Products: Airbus Industrie
- Product type: Aircraft
- Action: Supplemental notice of proposed rulemaking; reopening of comment period.
- Published: November 19, 2001, 66 FR 57896
- Comments due: December 14, 2001
- Became: [AD 2002-11-04](https://openairdocs.org/ad/2002-11-04)
- Docket: 99-NM-322-AD
- FR document: 01-28794
- Official PDF: https://openairdocs.org/files/sha256/d3/2c/d32c1a767f2f0989c9b17cddc4b9cfc678b102fdabba70243d7ea69fc088b70b (from https://www.govinfo.gov/content/pkg/FR-2001-11-19/pdf/01-28794.pdf)
- Federal Register: https://www.federalregister.gov/documents/2001/11/19/01-28794/airworthiness-directives-airbus-model-a300-b4-600-and-a300-b4-600r-series-airplanes-and-model-a300
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8F337909B2D5A5E786256B0900698059.0001
- Page: https://openairdocs.org/proposed/99-NM-322-AD

## Summary

This document revises an earlier proposed airworthiness directive (AD), applicable to all Airbus Model A300 B4-600, A300 B4-600R, and A300 F4-600R series airplanes, that would have superseded an existing AD. The existing AD requires repetitive inspections to detect cracks of certain attachment holes, installation of new fasteners, and follow-on inspections or repair if necessary. The proposed AD would have reduced the inspection threshold and repetitive intervals and expanded the area to be inspected. This supplemental notice of proposed rulemaking (NPRM) would further expand the area to be inspected, and would require a modification of the angle fittings of frame FR47. This supplemental NPRM would also remove certain airplanes from the applicability. The actions specified by this supplemental NPRM are intended to prevent fatigue cracking of the forward fitting of fuselage frame FR47, which could result in reduced structural integrity of the frame.

## Notices in this docket

- Jul 20, 2000: Notice of proposed rulemaking (NPRM). (first notice), FR document 00-18403, comments due Aug 21, 2000 (https://www.federalregister.gov/documents/2000/07/20/00-18403/airworthiness-directives-airbus-model-a300-b4-600-a300-b4-600r-and-a300-f4-600r-series-airplanes)
- Nov 19, 2001: Supplemental notice of proposed rulemaking; reopening of comment period., FR document 01-28794, comments due Dec 14, 2001 (https://www.federalregister.gov/documents/2001/11/19/01-28794/airworthiness-directives-airbus-model-a300-b4-600-and-a300-b4-600r-series-airplanes-and-model-a300)

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