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Fri, Apr 06, 2007

AD: Airbus

AD NUMBER: 2007-07-08
MANUFACTURER: Airbus
SUBJECT: Airworthiness Directive 2007-07-08
SUMMARY:
The FAA is superseding an existing airworthiness directive (AD), which applies to Airbus Model A300 B2 and B4 series airplanes equipped with General Electric CF6-50 engines. That AD currently requires deactivating both thrust reversers and revising the airplane flight manual (AFM)to require performance penalties during certain takeoff conditions to ensure that safe and appropriate performance is achieved for airplanes on which both thrust reversers have been deactivated. This new AD requires one-time inspections of the directional pilot valve (DPV), the rocker arm and associated hardware, and corrective actions if necessary; reactivation of both thrust reversers; and repetitive inspections of the DPV and the associated control mechanism of the thrust reversers for incorrect assembly or excessive wear, and corrective actions if necessary. Accomplishing all of the actions would allow the removal of the AFM limitations in the existing AD.This AD results from reports indicating that the DPV was assembled incorrectly; further investigation revealed excessive wear on certain correctly assembled DPVs and the associated control mechanism. We are issuing this AD to prevent uncommanded in-flight deployment of a thrust reverser, which could result in reduced controllability of the airplane.

FMI: www.faa.gov/regulations_policies/airworthiness_directives/

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