# Proposed AD FAA-2010-0644: Airbus Model A300 B4-600 Series Airplanes; Model A300 B4-600R Series Airplanes; Model A300 C4-605R Variant F Airplanes; and Model A300 F4-600R Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2010-21-06
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 1, 2010, 75 FR 38061
- Comments due: August 16, 2010
- Became: [AD 2010-21-06](https://openairdocs.org/ad/2010-21-06)
- Docket: FAA-2010-0644 (https://www.regulations.gov/docket/FAA-2010-0644, where comments are filed)
- Project: 2009-NM-204-AD
- FR document: 2010-15982
- Official PDF: https://openairdocs.org/files/sha256/c5/98/c598e963e1382eac6039e64a85954f4e774db1d306254e739704cabb0d30c155 (from https://www.govinfo.gov/content/pkg/FR-2010-07-01/pdf/2010-15982.pdf)
- Federal Register: https://www.federalregister.gov/documents/2010/07/01/2010-15982/airworthiness-directives-airbus-model-a300-b4-600-series-airplanes-model-a300-b4-600r-series
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D8924B78AD3B7E85862577530065E388.0001
- Page: https://openairdocs.org/proposed/FAA-2010-0644

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

Within the framework of the A300-600 aircraft Service Life Extension programme (42 500 FC [flight cycles]), it has been concluded that a reinforcement of the junction of frame bases at FR48, FR49 and FR51 to FR53 is necessary to enable the aircraft to reach the Extended Service Goal (ESG).

* * * [Failure of the frame base], if not corrected, could affect the structural integrity of the fuselage. * * * * * The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Jul 1, 2010: Notice of proposed rulemaking (NPRM). (first notice), FR document 2010-15982, comments due Aug 16, 2010 (https://www.federalregister.gov/documents/2010/07/01/2010-15982/airworthiness-directives-airbus-model-a300-b4-600-series-airplanes-model-a300-b4-600r-series)

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