# Proposed AD FAA-2006-24367: Airbus Model A300 F4-600R Series Airplanes and Model A300 C4-605R Variant F Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2006-14-06
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 11, 2006, 71 FR 18237
- Comments due: May 11, 2006
- Became: [AD 2006-14-06](https://openairdocs.org/ad/2006-14-06)
- Docket: FAA-2006-24367 (https://www.regulations.gov/docket/FAA-2006-24367, where comments are filed)
- Project: 2006-NM-041-AD
- FR document: E6-5246
- Official PDF: https://openairdocs.org/files/sha256/f4/10/f410361409e5fd1a45a9495b50cd07cd2f236b86cc4eac2118444a002d1732d4 (from https://www.govinfo.gov/content/pkg/FR-2006-04-11/pdf/E6-5246.pdf)
- Federal Register: https://www.federalregister.gov/documents/2006/04/11/E6-5246/airworthiness-directives-airbus-model-a300-f4-600r-series-airplanes-and-model-a300-c4-605r-variant-f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DF0D19F36584DE6C8625714D00695D28.0001
- Page: https://openairdocs.org/proposed/FAA-2006-24367

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus Model A300 F4-600R series airplanes and Model A300 C4-605R Variant F airplanes. This proposed AD would require modifying certain structure in the fuselage zone at the lavatory venturi installation in the nose section, and performing a related investigative action and corrective action if necessary. This proposed AD results from an analysis that revealed that airplanes equipped with Airbus Modification 08909 had a concentration of loads higher than expected in the fuselage zone (high stress) at the lavatory venturi installation in the nose section, which could be the origin of cracks that developed in the fuselage skin and propagated from the edge of the air vent hole. We are proposing this AD to prevent fatigue cracking of the fuselage skin, which could result in loss of the structural integrity of the fuselage and consequent rapid depressurization of the airplane.

## Notices in this docket

- Apr 11, 2006: Notice of proposed rulemaking (NPRM). (first notice), FR document E6-5246, comments due May 11, 2006 (https://www.federalregister.gov/documents/2006/04/11/E6-5246/airworthiness-directives-airbus-model-a300-f4-600r-series-airplanes-and-model-a300-c4-605r-variant-f)

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