Airworthiness Directive · Amendment 39-13844 · Gulfstream Model GV and GV-SP Series Airplanes
Gulfstream Model GV and GV-SP Series Airplanes
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.
The FAA is adopting a new airworthiness directive (AD) for certain Gulfstream Model GV and GV-SP series airplanes. This AD requires 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. This AD also requires, for certain airplanes, adjusting the wiring harness to obtain a minimum clearance between the crew oxygen bottle and wiring, and applying Teflon sheeting, as applicable; and for certain other airplanes, reworking certain wiring bundles. This AD is prompted by reports of insufficient clearance between certain wiring harnesses and the crew oxygen bottle on several in-production and in- service airplanes. We are 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.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
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).
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.”
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.
(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.
Although the customer bulletins referenced in this AD specify to submit certain information to the manufacturer, this AD does not include that requirement.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
