# Proposed AD FAA-2005-22036: Airbus Model A300 B2 and B4 Series Airplanes; Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and Model C4-605R Variant F Airplanes (Collectively Called A300-600 Series Airplanes); and Model A310 Series Airplanes; Equipped With General Electric CF6-80A3 or CF6-80C2 Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2007-06-13
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 8, 2005, 70 FR 45595
- Comments due: September 7, 2005
- Became: [AD 2007-06-13](https://openairdocs.org/ad/2007-06-13)
- Docket: FAA-2005-22036 (https://www.regulations.gov/docket/FAA-2005-22036, where comments are filed)
- Project: 2005-NM-009-AD
- FR document: 05-15594
- Official PDF: https://openairdocs.org/files/sha256/c2/92/c292228a19661fedcba520994eab35df0b01dbc6dc1d46bdc9a9bc2a3af74f29 (from https://www.govinfo.gov/content/pkg/FR-2005-08-08/pdf/05-15594.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/08/08/05-15594/airworthiness-directives-airbus-model-a300-b2-and-b4-series-airplanes-model-a300-b4-600-b4-600r-and
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7539556CC0A89EDD8625705700657100.0001
- Page: https://openairdocs.org/proposed/FAA-2005-22036

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus airplane models, as specified above. This proposed AD would require installing electro-pneumatic locking bar devices (TRAS lock systems) in the engine nacelles, installing a dedicated and shielded electrical circuit that is segregated from the existing thrust reverser control system, and performing related investigative/ corrective actions if necessary. This proposed AD is prompted by the manufacturer's reassessment of the thrust reverser systems in the Airbus airplane models specified above, which showed that the thrust reverser could inadvertently deploy in flight under certain conditions. We are proposing this AD to prevent inadvertent deployment of thrust reversers in flight, which could result in reduced controllability of the airplane.

## Notices in this docket

- Aug 8, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-15594, comments due Sep 7, 2005 (https://www.federalregister.gov/documents/2005/08/08/05-15594/airworthiness-directives-airbus-model-a300-b2-and-b4-series-airplanes-model-a300-b4-600-b4-600r-and)

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