# Proposed AD FAA-2011-0570: Airbus Model A300 Series Airplanes; Model A310 Series Airplanes; and Model A300 B4-600, B4-600R, and F4- 600R Series Airplanes, and Model C4-605R Variant F Airplanes (Collectively Called A300-600 Series Airplanes)

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2011-20-09
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 22, 2011, 76 FR 36387
- Comments due: August 8, 2011
- Became: [AD 2011-20-09](https://openairdocs.org/ad/2011-20-09)
- Docket: FAA-2011-0570 (https://www.regulations.gov/docket/FAA-2011-0570, where comments are filed)
- Project: 2011-NM-014-AD
- FR document: 2011-15535
- Official PDF: https://openairdocs.org/files/sha256/a9/c7/a9c76a1dc23007e942c2ecfd7fb3bd92dedf17ab65dba99932d7eb989541e5ad (from https://www.govinfo.gov/content/pkg/FR-2011-06-22/pdf/2011-15535.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/06/22/2011-15535/airworthiness-directives-airbus-model-a300-series-airplanes-model-a310-series-airplanes-and-model
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9CAA976708274095862578B7004DCF1F.0001
- Page: https://openairdocs.org/proposed/FAA-2011-0570

## 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:

* * * * *

A recent analysis conducted by the manufacturer showed a particular risk for explosive failure of the * * * hydraulic accumulator.

This condition, if not detected and corrected, might, for some aeroplane installations, lead to damage to all three hydraulic circuits, possibly resulting in loss of control of the aeroplane or could, for certain other aeroplane installations, lead to an undetected fire in the wheel bay.

* * * * *

The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Jun 22, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-15535, comments due Aug 8, 2011 (https://www.federalregister.gov/documents/2011/06/22/2011-15535/airworthiness-directives-airbus-model-a300-series-airplanes-model-a310-series-airplanes-and-model)

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