# Proposed AD FAA-2006-23675: Airbus Model A300 B2-203 and A300 B4- 203 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 A310-200 and -300 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2006-15-06
- Products: Airbus
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 25, 2006, 71 FR 4062
- Comments due: February 24, 2006
- Became: [AD 2006-15-06](https://openairdocs.org/ad/2006-15-06)
- Docket: FAA-2006-23675 (https://www.regulations.gov/docket/FAA-2006-23675, where comments are filed)
- Project: 2001-NM-320-AD
- FR document: E6-897
- Official PDF: https://openairdocs.org/files/sha256/e2/96/e29646b8cc5db550cd490b03347945b5834c74cc9097c765863644e664ec50d4 (from https://www.govinfo.gov/content/pkg/FR-2006-01-25/pdf/E6-897.pdf)
- Federal Register: https://www.federalregister.gov/documents/2006/01/25/E6-897/airworthiness-directives-airbus-model-a300-b2-203-and-a300-b4-203-airplanes-model-a300-b4-600
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/57CBD67E0CAAFA6086257101005A8AFF.0001
- Page: https://openairdocs.org/proposed/FAA-2006-23675

## Summary

The FAA proposes to supersede an existing airworthiness directive (AD) that affects certain Airbus Model A300 series airplanes and all Model A300-600 and A310 series airplanes. That AD currently requires repetitive inspections of the pitch trim system to detect continuity defects in the autotrim function, and follow-on corrective actions if necessary. For certain airplanes, this proposed AD would also require replacing the flight augmentation computers (FACs) with new improved FACs. This proposed AD also revises the applicability of the existing AD. This proposed AD results from the development of a final action intended to address the unsafe condition. We are proposing this AD to prevent a sudden change in pitch due to an out-of-trim condition combined with an autopilot disconnect, which could result in reduced controllability of the airplane.

## Notices in this docket

- Jan 25, 2006: Notice of proposed rulemaking (NPRM). (first notice), FR document E6-897, comments due Feb 24, 2006 (https://www.federalregister.gov/documents/2006/01/25/E6-897/airworthiness-directives-airbus-model-a300-b2-203-and-a300-b4-203-airplanes-model-a300-b4-600)

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