AD 2005-13-14 Airworthiness Directives; McDonnell Douglas Model MD-90-30 Airplanes

Models named: MD-90-30. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to all McDonnell Douglas Model MD-90-30 airplanes, certificated in any category.

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 DACMs (f) Within 18 months after the effective date of this AD, replace existing DACMs with new, improved or reworked and reidentified DACMs, part number 6006079-2, by doing all actions in accordance with the Accomplishment Instructions of Boeing Service Bulletin MD90-32-056, dated October 7, 2003. Note 1: Boeing Service Bulletin MD90-32-056 refers to Aircraft Braking Systems Corporation (ABSC) Service Bulletin MD-90 6006079-32-02, dated August 7, 2003, as an additional source of service information for installing new, improved or reworked and reidentified DACMs. Concurrent Service Bulletin (g) Prior to or concurrently with the accomplishment of paragraph (f) of this AD, perform paragraphs (g)(1) and (g)(2) of this AD in accordance with the Accomplishment Instructions of Boeing Service Bulletin MD90-32-043, Revision 01, dated November 9, 2000. (1) Perform a detailed inspection of the metered pressure inlet filters and other components of the DACM for damage. Replace any damaged DACM components with new or serviceable components, and flush/clean the braking system, as applicable. (2) Replace the metered pressure inlet filters of the DACM assembly with new filters. Note 2: Boeing Service Bulletin MD90-32-043, Revision 01, refers to ABSC Service Bulletin MD90-32-12, dated January 12, 2000, as an additional source of service information for inspecting the components of the DACM assembly for uncleanliness, structural damage or excessive wear that may render the DACM inoperable, and for replacing those components with new or serviceable components, if necessary. Note 3: For the purposes of this AD, a detailed inspection is “an intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirror, magnifying lenses, etc., may be necessary. Surface cleaning and elaborate procedures may be required.” Prior Inspection/Replacement of Inlet Filters (h) Inspecting and replacing DACM inlet filters and flushing/cleaning braking systems before the effective date of this AD in accordance with Boeing Service Bulletin MD90-32-043, dated April 10, 2000, is considered acceptable for compliance with the corresponding actions specified in this AD. Alternative Methods of Compliance (AMOCs) (i) The Manager, Los Angeles Aircraft Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Material Incorporated by Reference (j) You must use Boeing Service Bulletin MD90-32-056, dated October 7, 2003; and Boeing Service Bulletin MD90-32-043, Revision 01, dated November 9, 2000; as applicable; 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 these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. To get 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). To view the AD docket, go to the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street SW., room PL-401, Nassif Building, Washington, DC. To review copies of the service information, go to the National Archives and Records Administration (NARA). For information on the availability of this material at the NARA, call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. Issued in Renton, Washington, on June 13, 2005. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 05-12313 Filed 6-23-05; 8:45 am] BILLING CODE 4910-13-P

This AD was prompted by reports of multiple incidents of blown tires on landing while using maximum autobrake. We are issuing this AD to prevent metallic fibers from the first stage filter of the servo valves inside the dual anti-skid control manifolds (DACM) from becoming lodged in the first stage nozzle of the servo valve, which could lead to tire failure during high speed/high energy braking and possible subsequent runway departure.