# Airworthiness Directives; Airbus Model A310 and A300-600 Series Airplanes
> **Rule** · Final rule. · Published 1999-12-21 · Effective 2000-01-25 · 64 FR 71278
## Document
- **Document number:** 99-32508
- **Category:** airworthiness
- **Manufacturer:** Airbus Model A310 and A300-600 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 64 FR 71278
- **Publication date:** 1999-12-21
- **Effective date:** 2000-01-25
- **FAA docket:** Docket No. 96-NM-194-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A310 and A300-600 series airplanes, that requires replacement of the rudder trim switch in the flight compartment with a new switch having a longer shaft; modification of wiring in panel 408VU; and replacement of the rudder trim control knob with an improved new knob. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent inadvertent and uncommanded rudder trim activation, which could result in yaw and roll excursions and consequent reduced controllability of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/12/21/99-32508/airworthiness-directives-airbus-model-a310-and-a300-600-series-airplanes)
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