# Proposed AD FAA-2006-24431: Airbus Model A319, A320, and A321 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2006-12-22
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 13, 2006, 71 FR 19136
- Comments due: May 15, 2006
- Became: [AD 2006-12-22](https://openairdocs.org/ad/2006-12-22)
- Docket: FAA-2006-24431 (https://www.regulations.gov/docket/FAA-2006-24431, where comments are filed)
- Project: 2006-NM-011-AD
- FR document: E6-5476
- Official PDF: https://openairdocs.org/files/sha256/17/c5/17c56c0e8185ce286e7382b674610ff05fa625bb0b36555a43872b4cd1058705 (from https://www.govinfo.gov/content/pkg/FR-2006-04-13/pdf/E6-5476.pdf)
- Federal Register: https://www.federalregister.gov/documents/2006/04/13/E6-5476/airworthiness-directives-airbus-model-a319-a320-and-a321-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/601D2B85113773E68625714F00693174.0001
- Page: https://openairdocs.org/proposed/FAA-2006-24431

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus Model A319, A320, and A321 airplanes. This proposed AD would require a detailed inspection for cracks and marks on the carbon blades of the ram air turbine (RAT), and replacement of the RAT with a new or serviceable RAT if necessary. This proposed AD results from a report of three chord-wise cracks on the aft side of one carbon blade of a certain RAT. We are proposing this AD to detect and correct cracks and/or marks on the RAT carbon blades, which could result in reduced structural integrity of the carbon blade, and consequent loss of the RAT as a source of hydraulic and electrical power in an emergency.

## Notices in this docket

- Apr 13, 2006: Notice of proposed rulemaking (NPRM). (first notice), FR document E6-5476, comments due May 15, 2006 (https://www.federalregister.gov/documents/2006/04/13/E6-5476/airworthiness-directives-airbus-model-a319-a320-and-a321-airplanes)

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