AD/A320/207 Flight Controls Trimmable Horizontal Stabilizer Actuator (Cth)
AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.
Airbus Industrie A319, A320 and A321 Series Aeroplanes
| AD/A320/207 | Flight Controls - Trimmable Horizontal Stabilizer Actuator | 9/2007 |
Applicability: | AIRBUS A318, A319, A320 and A321 aircraft manufactured serial numbers (MSN) up to MSN 2860. |
Requirement: | Inspect the upper and lower THSA attachments in accordance with SB Note: EASA AD 2007-0178 dated 22 June 2007 refers. |
Compliance: | Within 600 flight hours or 750 flight cycles or 100 days after the effective date of this AD, whichever occurs first, unless already accomplished. |
| This Airworthiness Directive becomes effective on 30 August 2007. | |
Background: | A number of occurrences of an incorrect installation of the Trimmable horizontal stabilizer actuator (THSA) have been found and reported during the accomplishment of the AIRBUS Service Bulletin (SB) A320-27-1164 mandated by AD/A320/178 Amdt 1 (EASA AD 2006-0223). These issues could lead to a degradation of the integrity of the THSA primary load path and to secondary load path partial or full engagement. This AD therefore mandates a one-time detailed visual inspection of specific parts of the THSA attachments. |
David Punshon
Delegate of the Civil Aviation Safety Authority
26 June 2007
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