GSAC

AIRWORTHINESS DIRECTIVE

released by DIRECTION GENERALE DE L'AVIATION CIVILE

Inspection and/or modifications described below are mandatory. No person may operate a product to which this

Airworthiness Directive applies except in accordance with the requirements of this Airworthiness Directive

Translation of 'Consigne de Navigabilité'

ref.: 97-081-217(B)R1

In case of any difficulty, reference should be made to the French original issue.

AIRBUS INDUSTRIE

A310 and A300-600 Aircraft

Hydraulic motors of the trimmable

horizontal stabilizer (THS) actuator

This Airworthiness Directive applies to AIRBUS INDUSTRIE A310 and A300-600 aircraft, all certified models and all serial numbers on which AIRBUS INDUSTRIE modification No. 11607 has not been embodied (AIRBUS INDUSTRIE Service Bulletin A310-27-2081 or A300-27-6035 on in-service aircraft).

In order to prevent, in case of desynchronization of the THS actuator hydraulic motors, the internal rupture of one of the hydraulic motors, thus reversing its rotation, which in turn, combined with the loss of the hydraulic system associated with the other motor, would lead to a runaway of the THS to its up or down end travel position, the following measures are rendered mandatory from the effective date of this Airworthiness Directive:

• Before August 31, 1998, modify the THS actuator, by replacing the hydraulic motors, in accordance with the instructions of AIRBUS INDUSTRIE Service Bulletins A310-27-2081 or A300-27-6035.

Ref.: AIRBUS INDUSTRIE Service Bulletins A310-27-2081

AIRBUS INDUSTRIE Service Bulletins A300-27-6035

(or any further approved revision)

This Revision 1 replaces Airworthiness Directive 97-081-217(B) dated March 12, 1997.

Original AD: MARCH 22, 1997

Revision 1: MARCH 21, 1998

March 11, 1998 AIRBUS INDUSTRIE 97-081-217(B)R1

A310 and A300-600 Aircraft