Airworthiness directives › 2004-11-03
AD 2004-11-03 Airworthiness Directives; Boeing Model 747-400 and -400F Series Airplanes Equipped With Rolls Royce Engines
Models named: 747-400, -400F series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
Model 747-400 and -400F series airplanes having line numbers 696 through 1310 inclusive and equipped with Rolls Royce engines; certificated in any category.
Compliance
Required as indicated, unless accomplished previously. To prevent damage and arcing to the conduit and power feeder cables of the integrated drive generator (IDG), which could result in a fire in the engine strut; and to prevent damage to the adjacent hydraulic lines in the aft section of the outboard struts, which could result in reduced controllability of the airplane; accomplish the following: Inspection for Damage or Arcing (a) Within 90 days after the effective date of this AD, perform a general visual inspection for damage or arcing of the power feeder cables of the integrated drive generator (IDG) and the cable conduit, per the Accomplishment Instructions of Boeing Service Bulletin (SB) 747-24A2240, Revision 1, dated February 20, 2003. Before further flight, repair any damage per the SB. Thereafter, repeat the inspection at intervals not to exceed 10,000 flight hours, until the actions required by paragraph (c) of this AD are accomplished. Note 1: For the purposes of this AD, a general visual inspection is defined as: “A visual examination of an interior or exterior area, installation, or assembly to detect obvious damage, failure, or irregularity. This level of inspection is made from within touching distance unless otherwise specified. A mirror may be necessary to enhance visual access to all exposed surfaces in the inspection area. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight, or droplight and may require removal or opening of access panels or doors. Stands, ladders, or platforms may be required to gain proximity to the area being checked.” Inspection for Chafing and Arcing Damage (b) Within 90 days after the effective date of this AD, perform a general visual inspection for chafing and arcing damage of the power feeder cables of the IDG and hydraulic lines on each outboard strut aft of the block clamp, per the Accomplishment Instructions of Boeing Alert Service Bulletin (ASB) 747-24A2247, dated July 10, 2003. Before further flight, repair any chafing or arcing damage per the ASB. Thereafter, repeat the inspection at intervals not to exceed 10,000 flight hours until the actions required by paragraph (d) of this AD are accomplished. Terminating Requirements for Paragraph (a) of This AD (c) Within 48 months after the effective date of this AD, remove the conduit, install a new shield/bracket assembly, and replace two hydraulic lines with two new hydraulic lines in each engine strut, per the Accomplishment Instructions of Boeing SB 747-24A2242, Revision 1, dated August 14, 2003. Before further flight, perform related investigative actions and corrective actions per the Accomplishment Instructions of the SB. Accomplishment of these actions terminates the inspection requirements of paragraph (a) of this AD. Terminating Requirements for Paragraph (b) of This AD (d) Within 48 months after the effective date of this AD, replace the wiring and hydraulic tubing support bracket per the Accomplishment Instructions of Boeing ASB 747-24A2243, dated October 31, 2002. Accomplishment of these actions terminates the inspection requirements of paragraph (b) of this AD. Alternative Methods of Compliance (AMOC) (e) In accordance with 14 CFR 39.19, the Manager, Seattle Aircraft Certification Office (ACO), FAA, is authorized to approve alternative methods of compliance (AMOCs) for this AD. Incorporation by Reference (f) The actions shall be done in accordance with Boeing Service Bulletin 747-24A2240, Revision 1, dated February 20, 2003; Boeing Service Bulletin 747-24A2242, Revision 1, dated August 14, 2003; Boeing Alert Service Bulletin 747-24A2243, dated October 31, 2002; and Boeing Alert Service Bulletin 747-24A2247, dated July 10, 2003, as applicable. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124-2207. Copies may be inspected 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/code_of_federal_regulations/ibr_locations.html. Effective Date (g) This amendment becomes effective on June 17, 2004. Issued in Renton, Washington, on May 18, 2004. Kevin M. Mullin, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 04-11957 Filed 6-1-04; 8:45 am] BILLING CODE 4910-13-P
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1