2009-25-04: Engine fuel and control

2009-25-04 Airbus: Amendment 39-16123. Docket No. FAA-2009-1109; Directorate Identifier 2009-NM-068-AD. Effective Date (a) This airworthiness directive (AD) becomes effective December 28, 2009. Affected ADs (b) None. Applicability (c) This AD applies to Airbus Model A330-243, -341,-342, and - 343 airplanes, all manufacturing serial numbers (MSN), except those on which Airbus Modification 56722 has been embodied in production. Subject (d) Air Transport Association (ATA) of America Code 73: Engine fuel and control. Reason (e) The mandatory continued airworthiness information (MCAI) states: An operator of A330 aeroplane fitted with Rolls-Royce (RR) Trent 772 B engines experienced an engine 1 uncontained multiple turbine blade failure. Investigations have shown that High Pressure/ Intermediate Pressure (HP/IP) oil vent tubes are prone to be affected by carbon deposit or to be damaged by their outer heat shields leading to a fire inside or outside the vent tube and resulting into IP Turbine (IPT) disc drive arm fracture and thus IPT disc overspeed. If not corrected, IPT disc overspeed could lead to an uncontained engine failure, i.e. multiple turbine blade failure or HP/IP turbine disc burst, which would constitute an unsafe condition. In order to protect IPT from overspeed, EASA AD 2008-0101 required to activate Intermediate Pressure Turbine Overspeed (IPTOS) protection function by Data Entry Plug (DEP) reprogramming, which consists in limiting the IPT speed (Engine Thrust) when overheat is detected in IPT, for all A330 aeroplanes fitted with RR Trent 700 engines and equipped with Multi Mode Receivers. Original issue of AD 2008-0101 had a limited applicability due to Flight Warning Computer compatibility issue with aircraft not equipped with Multi Mode Receivers. Airbus has now developed a new Flight Warning Computer standard T2 whose embodiment is also possible on A330 aeroplane fitted with RR Trent 700 enginesnot equipped with Multi Mode Receivers. For the above described reasons, this AD retains the requirement of EASA AD 2008-0101, which is superseded, and extends the applicability to all A330 aeroplanes fitted with RR Trent 700 engines. Actions and Compliance (f) Unless already done, do the following actions: Within 12 months after the effective date of this AD, do the actions specified in paragraph (f)(1) of this AD. (1) Reprogram the data entry plug on both engines to activate the intermediate pressure turbine overspeed protection function, including doing applicable revisions of the Airplane Flight Manual (AFM), in accordance with the Accomplishment Instructions of Airbus Mandatory Service Bulletin A330-73-3049, Revision 01, dated November 13, 2008. Note 1: IPTOS function activation has the following operational consequences: Modification of the AFM and the flightcrew operating manual (FCOM). Accomplishment of the actions specified in Airbus Mandatory Service Bulletin A330-73-3049, Revision 01, dated November 13, 2008 (Airbus Modification 56722), cancels Airbus A330 AFM Supplement 6.03.08, dated June 2, 2006; and Volumes 1 and 3 (1.70.20, 1.70.95, and 3.02.70) of the Airbus A330 FCOM have been modified. (2) Actions accomplished before the effective date of this AD in accordance with Airbus Mandatory Service Bulletin A330-73-3049, dated November 14, 2007, are considered acceptable for compliance with the corresponding action specified in paragraph (f)(1) of this AD. FAA AD Differences Note 2: This AD differs from the MCAI and/or service information as follows: No differences. Other FAA AD Provisions (g) The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Vladimir Ulyanov, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 227-1138; fax (425) 227-1149. Before using any approved AMOC on any airplane to which the AMOC applies, notify your principal maintenance inspector (PMI) or principal avionics inspector (PAI), as appropriate, or lacking a principal inspector, your local Flight Standards District Office. The AMOC approval letter must specifically reference this AD. (2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAA-approved if they are approved by the State of Design Authority (or their delegated agent). You are required to assure the product is airworthy before it is returned to service. (3) Reporting Requirements: For any reporting requirement in this AD, under the provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.), the Office of Management and Budget (OMB) has approved the information collection requirements and has assigned OMB Control Number 2120-0056. Related Information (h) Refer to Mandatory Continuing Airworthiness Information EASA Airworthiness Directive 2009-0075, dated April 6, 2009; and Airbus Mandatory Service Bulletin A330-73-3049, Revision 01, dated November 13, 2008; for related information. Material Incorporated by Reference (i) You must use Airbus Mandatory Service Bulletin A330-73-3049, Revision 01, dated November 13, 2008, to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France; telephone +335 61 93 36 96; fax +33 5 61 93 45 80, e-mail [email protected]; Internet http://www.airbus.com. (3) You may review copies of the service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington. For information on the availability of this material at the FAA, call 425-227-1221 or 425-227-1152. (4) You may also review copies of the service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http:// www.archives.gov/federal_register/code_of_federal_regulations/ ibr_locations.html.