AD 2007-04-17 Airworthiness Directives; McDonnell Douglas Model DC-10-10, DC-10-10F, DC-10-15, DC-10-30, and DC-10-30F (KC-10A and KDC-10) Airplanes; Model DC-10-40 and DC-10-40F Airplanes Equipped With Pratt & Whitney JT9-20 or JT9-20J Engines; and Model MD-10-10F and MD-10-30F Airplanes

Models named: DC-10-40, DC-10-40F, MD-10-10F, MD-10-30F. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to McDonnell Douglas airplanes, certificated in any category; as specified in paragraphs (c)(1), (c)(2), and (c)(3) of this AD. (1) All Model DC-10-10, DC-10-10F, DC-10-15, DC-10-30, and DC-10-30F (KC-10A and KDC-10) airplanes; (2) Model DC-10-40 and DC-10-40F airplanes equipped with Pratt & Whitney JT9-20 or JT9-20J engines; and (3) All Model MD-10-10F and MD-10-30F airplanes.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Control Module Replacement (f) Within 60 months after the effective date of this AD, replace the control modules of the fire detection systems of the propulsion engines with new, improved control modules, in accordance with paragraph 2., “Main Engine Control Module Replacement Instructions,” of Meggitt Safety Systems Service Bulletin 26-34, Revision 2, dated August 15, 2006. Credit for Previous Revisions of Service Bulletins (g) Actions done before the effective date of this AD in accordance with Meggitt Safety Systems Service Bulletin 26-34, Revision 1, dated July 17, 2006, are acceptable for compliance with the corresponding actions required by paragraph (f) of this AD. Alternative Methods of Compliance (AMOCs) (h)(1) The Manager, Los Angeles Aircraft Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. (2) Before using any AMOC approved in accordance with § 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. Material Incorporated by Reference (i) You must use Meggitt Safety Systems Service Bulletin 26-34, Revision 2, dated August 15, 2006, to perform the actions that are required by this AD, unless the AD specifies otherwise. Meggitt Safety Systems Service Bulletin 26-34, Revision 2, dated August 15, 2006, contains the following effective pages:   Page number Revision level shown on page Date shown on page 1-26 2 August 15, 2006. 27-61 1 July 17, 2006. The Director of the Federal Register approved the incorporation by reference of this document in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Meggitt Safety Systems, 1915 Voyager Avenue, Simi Valley, California 93063, for a copy of this service information. You may review copies at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or 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/cfr/ibr-locations.html. Issued in Renton, Washington, on February 8, 2007. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E7-2639 Filed 2-15-07; 8:45 am] BILLING CODE 4910-13-P

This AD results from a report of broken or severed wiring between engine fire detectors and the fire detection system control module, which caused the fire detection system to become non-functional without flightcrew awareness. We are issuing this AD to prevent unannunciated fire in a propulsion engine, which could cause injury to flightcrew and passengers or loss of the airplane.