AD 2004-22-16 Airworthiness Directives; Gulfstream Model GV and GV-SP Series Airplanes

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

This AD applies to Gulfstream Model GV series airplanes, serial numbers (S/N) 550 through 693 inclusive and 699; and Model GV-SP series airplanes, S/N 5001 through 5051 inclusive; 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. Customer Bulletin References (f) The term “customer bulletin,” as used in this AD, means the Accomplishment Instructions of the following customer bulletins, as applicable: (1) Gulfstream GV Alert Customer Bulletin 21, dated September 13, 2004 (for Model GV series airplanes); (2) Gulfstream G500 Alert Customer Bulletin 1, dated September 13, 2004, including Gulfstream Drawing 1159SB59987, Revision A, dated September 8, 2004 (for Model GV-SP (G500) series airplanes); and (3) Gulfstream G550 Alert Customer Bulletin 1, dated September 13, 2004, including Gulfstream Drawing 1159SB59987, Revision A, dated September 8, 2004 (for Model GV-SP (G550) series airplanes). Inspection for Contact and Clearance (g) For all airplanes: Within 25 flight hours after the effective date of this AD, do a one-time general visual inspection for contact or insufficient clearance between the crew oxygen bottle/supports and any wiring harness, and related investigative and corrective actions if necessary, by doing all of the actions in Part I of the applicable customer bulletin. If any damage is found during the general visual inspection required by this AD, and the customer bulletin specifies contacting Gulfstream for appropriate action: Before further flight, repair the damage according to a method approved by the Manager, Atlanta Aircraft Certification Office (ACO), FAA. For a repair method to be approved by the Manager, Atlanta ACO, as required by this paragraph, the Manager's approval letter must specifically refer to this AD. Note 1: For the purposes of this AD, a general visual inspection is: “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 ensure visual access to all 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.” Adjustment of Wiring Harness (h) For Model GV series airplanes: If the clearance between the crew oxygen bottle/supports and any wiring harness is found to be 0.250 inch or more during the inspection required by paragraph (g) of this AD, no further action is required by this AD. If the clearance between the crew oxygen bottle/supports and any wiring harness is found to be less than 0.250 inch during the inspection required by paragraph (g) of this AD, within 150 flight hours after completing paragraph (g) of this AD, adjust the wiring harness to obtain a minimum clearance of 0.250 inch between the crew oxygen bottle and wiring, and apply Teflon sheeting as applicable, in accordance with Part II of the applicable customer bulletin. Reworking of Wiring Bundle (i) For Model GV-SP series airplanes: Within 150 flight hours after completing paragraph (g) of this AD, rework the wiring bundle by complying with Drawing 1159SB59987, in accordance with Part II of the applicable customer bulletin. Reporting Requirement (j) Although the customer bulletins referenced in this AD specify to submit certain information to the manufacturer, this AD does not include that requirement. Alternative Methods of Compliance (AMOCs) (k) The Manager, Atlanta ACO, 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 (l) You must use the service information that is specified in Table 1 of this AD to perform the actions that are required by this AD, unless the AD specifies otherwise. Table 1.—Material Incorporated by Reference Alert customer bulletin— Revision level— Date— Gulfstream GV Alert Customer Bulletin 21 Original September 13, 2004. Gulfstream G500 Alert Customer Bulletin 1, including Gulfstream Drawing 1159SB59987 Original A September 13, 2004. September 8, 2004. Gulfstream G550 Alert Customer Bulletin 1, including Gulfstream Drawing 1159SB59987 Original A September 13, 2004. September 8, 2004. The Director of the Federal Register approves the incorporation by reference of those documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. For copies of the service information, contact Gulfstream Aerospace Corporation, P.O. Box 2206, Mail Station D-10, Savannah, Georgia 31402-9980. You can review copies at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street SW., room PL-401, Nassif Building, Washington, DC; 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 . Issued in Renton, Washington, on October 25, 2004. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 04-24519 Filed 11-3-04; 8:45 am] BILLING CODE 4910-13-P

This AD was prompted by reports of insufficient clearance between certain wiring harnesses and the crew oxygen bottle on several in-production and in-service airplanes. The FAA is issuing this AD to prevent chafing of the electrical wires of the wiring harness against the crew oxygen bottle, which could result in electrical shorting and possible fire in the underfloor structure of the airplane.