Document ID: chunk:federal_register_of_legislation:F2009L00109:body:0:p1
Version: federal_register_of_legislation:F2009L00109
Segment Type: other
Provision Reference: 
Character Range: 0–3244

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/A330/95 Amdt 1 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/A330/95 Amdt 2  Air Data Inertial Reference Unit Operational Procedure  3/2009 TX

Applicability:  A330 aircraft, models -201, -202, -203, -223, -243, -301, -302, -303, -321, -322, -323, -341, -342 and -343, all serial numbers, equipped with Northrop-Grumman (formerly Litton) Air Data Inertial Reference Unit (ADIRU) Part Number (P/N)
                465020-0303-03ZZ (with ZZ from 09 up to 16 inclusive).
Requirement:    Apply the following operational procedure:
                  - NAV - IR 1 (2) (3) FAULT
                  Turn off the affected IR.
                  Turn off the corresponding ADR.
                  Set the affected IR mode rotary selector must be set to OFF.
                  Use AIR DATA switching as appropriate.
                  Use ATT HDG switching as appropriate.
                  - NAV - IR 1+2 (2+3) (1+3) FAULT
                  Note: Flight controls are in alternate law. Refer to F/CTL – ALTN LAW (chapter 4
                            of the AFM).
                  Turn off the affected IRs
                  Turn off the corresponding ADRs.
                  Set the affected IR mode rotary selector must be set to OFF.
                  Use AIR DATA switching as appropriate.
                  Use ATT HDG switching as appropriate.
                  Do not use speed brakes
                  • If CG above 32%:
                   Manually perform a forward fuel transfer from the trim tank.
                   Note: If trim tank pump is not available, do not perform manual forward fuel            transfer while speed is at or below 270 kt or while in climb.
                Note 1:  This operational procedure is covered by Temporary Revision (TR) of the Aircraft Flight Manual (AFM) A330 AFM TR 4.02.00/46 Issue 3 (OEB N°74/4).
                Incorporation of the AFM TR or inserting the above operational procedure or a copy of this Directive into the AFM is acceptable to comply with the requirements of this Directive.
                Note 2:  EASA Emergency AD 2009-0012-E refers.

Compliance:  Before 19 January 2009.
             This Amendment becomes effective on 18 January 2009.
Background:  An A330 aircraft experienced a sudden nose down order while in cruise.  This order was preceded by an automatic autopilot disconnection and triggering of the "NAV IR1 FAULT" Electronic Centralised Aircraft Monitor (ECAM) Caution.

             Investigations highlighted that at time of the event the