AD/A330/26 Amdt 1 Spoiler Servo-Controls Life Limitations (Cth)

AIRWORTHINESS DIRECTIVE

On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/A330/26 and issues the following 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 A330 Series Aeroplanes

AD/A330/26 Amdt 1 Spoiler Servo-Controls Life Limitations 9/2006

Applicability:

Airbus A330 aircraft models -201, -202, -203, -223 and -243, -301, -302, -303, -321,
-322, -323, -341, -342 and -343.

This Airworthiness Directive does not apply to aircraft on which AIRBUS modification 44670 has been embodied in production and delivered after
13 January 2006.

Requirement:

For AIRBUS A330-200 series aircraft.

1.    Identify the Part Number (P/N) of all S4 and MZ type spoiler servo-controls installed on the aircraft, in accordance with AIRBUS Service Bulletin (SB) A330-27-3113 or later DGAC approved revision.

2.    Remove from service any S4 or MZ type spoiler servo-controls and replace with 138X type spoiler servo-controls in accordance with AIRBUS SB A330-27-3113 or later DGAC approved revision.  S4 or MZ type servo-controls removed from A330-200 series aircraft shall be scrapped.

A330-200 series aircraft which have embodied in service SB A330-27-3113 at original issue or revision 01, 02 or 03 are in compliance with Requirement 1 and 2 of this AD.

For AIRBUS A330-300 series aircraft.

3.Identify the P/N of all spoiler servo-controls installed on the aircraft, in accordance with AIRBUS SB A330-27-3113 or later DGAC approved revision.  If the P/N of the spoiler servo-control is MZ type or 138X type, no further action is required.

4.    Remove from service any S4 type spoiler servo-control and replace with a 138X type spoiler servo-control in accordance with AIRBUS SB A330-27-3113 Revision 04 or later DGAC approved revision.  S4 type servo-controls removed from A330-300 series aircraft shall be scrapped.

A330-300 series aircraft which have embodied in service SB A330-27-3113 Revision 03 are in compliance with Requirement 3 and 4 of this Airworthiness Directive.

Note:  EASA AD 2006-0159 dated 7 June 2006 refers. This Airworthiness Directive supersedes DGAC 2003-357(B).

Compliance:

1.    Remains unchanged as detailed in the original issue of this AD as: No later than March 31, 2004.

2.    Before reaching 6,000 Flight Cycles (FC) for servo-controls fitted in positions 2 to 6, and 11,000 FC for servo-controls fitted in position 1.

3.    Within 60 days after the effective date of this AD.

4.    Before reaching 14,000 cycles since new (CSN) for servo-controls installed in positions 2 to 6, and 15,000 CSN for servo-controls installed in position 1.

       If the S4 type spoiler servo-control accumulated life is unknown, apply the aircraft accumulated cycle count at the time of identification.

This Amendment becomes effective on 31 August 2006.

Background:

In order to prevent cracking of the servo-control, which could lead to loss of function as well as the loss of the three hydraulic systems, this Airworthiness Directive requires the removal before the servo-control reaches its operating life limit.

This amendment includes 300 series aircraft to the applicability section of the Airworthiness Directive. S4 spoiler servo-controls now have a life limit when installed on A330-300 series aircraft.

The original issue of this Airworthiness Directive became effective on 25 December 2003.

James Coyne
Delegate of the Civil Aviation Safety Authority

21 July 2006