AD 2005-05-11 Airworthiness Directives; Dornier Model 328-300 Series Airplanes

Models named: 328-300 series. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Dornier Model 328-300 series airplanes; certificated in any category; equipped with a Dunlop brake unit having part number AHA2227-3 or -4.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Repetitive Inspections/Replacement if Necessary (f) At the next brake installation or within 24 months after the effective date of this AD, which is first: Accomplish a detailed inspection for discrepancies of the heat pack rotor assembly and rotor drive clips of the brake unit of the MLG by doing all the actions specified in the Accomplishment Instructions of Dornier Service Bulletin SB-328J-32-169, dated November 20, 2002. If any discrepancy is found, before further flight, replace the heat pack rotor assembly with a new assembly in accordance with the service bulletin. Repeat the inspection thereafter in intervals not to exceed the next brake installation or 24 months, whichever is first. Note 1: Dorner Service Bulletin SB-328J-32-169 refers to Dunlap Aviation Service Bulletin AHA2227-32-1292, Revision 1, dated July 19, 2002, as an additional source of service information. Note 2: For the purpose 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.” Alternative Methods of Compliance (AMOCs) (g) The Manager, International Branch, ANM-16, Transport Airplane Directorate, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. Related Information (h) German airworthiness directive D-2004-003, dated January 8, 2004, also addresses the subject of this AD. Material Incorporated by Reference (i) You must use Dorner Service Bulletin SB-328J-32-169, including the Price/Material Information Sheet, dated November 20, 2002, 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. For copies of the service information, contact AvCraft Aerospace GmbH, P.O. Box 1103, D-82230 Wessling, Germany. 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, Washngton, DC. Issued in Renton, Washington, on February 28, 2005. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 05-4413 Filed 3-11-05; 8:45 am] BILLING CODE 4910-13-M

This AD was prompted by reports of cracking and breakage of the heat pack rotor assemblies. We are issuing this AD to find and fix discrepancies of the heat pack rotor assembly of the brake unit of the main landing gear (MLG) and consequent loss of braking capability, which could result in the airplane overrunning the runway during take-off or landing.