AD 2005-02-06 Airworthiness Directives; McDonnell Douglas Model MD-11 and MD-11F Airplanes Equipped With Pratt & Whitney PW4000 Series Engines

Models named: MD-11, MD-11F. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to McDonnell Douglas Model MD-11 and MD-11F airplanes, as listed in Boeing Alert Service Bulletin MD11-79A008, dated December 11, 2001; certificated in any category; equipped with Pratt & Whitney PW4000 series engines.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Replacement of Hose Assemblies (f) Within 18 months after the effective date of this AD: For each engine, replace the existing hose assembly, part number (P/N) 113286, that connects the oil pressure transmitter to the main oil circuit, with tube assembly P/N 221-5318-501. Do the replacement in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin MD11-79A008, dated December 11, 2001. Note 1: Boeing Alert Service Bulletin MD11-79A008 refers to Pratt & Whitney Alert Service Bulletin PW4MD11 A79-9, dated October 25, 2001, as an additional source of service information for replacing the hose assemblies. Alternative Methods of Compliance (AMOCs) (g) 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. Material Incorporated by Reference (h) You must use Boeing Alert Service Bulletin MD11-79A008, dated December 11, 2001, to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approves the incorporation by reference of this document in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. For copies of the service information, contact Boeing Commercial Airplanes, Long Beach Division, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Data and Service Management, Dept. C1-L5A (D800-0024). For information on the availability of this material at the National Archives and Records Administration (NARA), call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. You may view the AD docket at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street SW, room PL-401, Nassif Building, Washington, DC. Issued in Renton, Washington, on January 18, 2005. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 05-1516 Filed 1-28-05; 8:45 am] BILLING CODE 4910-13-P

This AD was prompted by a report indicating that, for each engine, the existing hose assembly that connects the oil pressure transmitter to the main oil circuit does not meet zero-flow fireproof capability requirements. We are issuing this AD to prevent, if there is an engine fire, failure of the oil pressure indicator and the low-oil pressure warning, which could result in an unannounced shutdown of that engine; and oil leakage, which may feed the engine fire.