Airworthiness Directive · Amendment 39-19065 · Airborne auxiliary power
Gulfstream Aerospace Corporation Airplanes
This AD applies to the Gulfstream Aerospace Corporation airplanes, certificated in any category, identified in paragraphs (c)(1) through (c)(5) of this AD.
(1) Model G-IV airplanes, having serial numbers (S/Ns) 1000 and subsequent.
(2) Model GIV-X airplanes, having S/Ns 4001 and subsequent.
(3) Model GV airplanes, having S/Ns 501 and subsequent.
(4) Model GV-SP airplanes, having S/Ns 5001 and subsequent.
(5) Model GVI airplanes, having S/Ns 6001 and subsequent.
We are superseding Airworthiness Directive (AD) 2009-17-01, which applied to certain Gulfstream Model G-IV, GIV-X, GV-SP airplanes and Model GV airplanes. AD 2009-17-01 required an inspection for sealant applied to the exterior of the auxiliary power unit (APU) enclosure (firewall), and a revision of the airplane flight manual (AFM), as applicable. This AD requires revising the AFM and revising the applicability to include additional airplanes. This AD was prompted by a report indicating that the type design sealant applied to the APU enclosure failed certain tests. We are issuing this AD to address the unsafe condition on these products.
Within 30 days after the effective date of this AD, revise the Limitations Section of the applicable Gulfstream AFM specified in paragraphs (h)(1) through (h)(6) of this AD to include the information in the applicable Gulfstream AFM supplement (AFMS) specified in paragraphs (h)(1) through (h)(6) of this AD. These AFMSs introduce operating limitations on the use of the APU during certain ground and flight operations. This AFM revision may be done by inserting a copy of the applicable AFMS into the applicable AFM specified in paragraphs (h)(1) through (h)(6) of this AD. When the AFMS has been included in the general revision of the AFM, the general revision may be inserted into the AFM, provided the relevant information in the general revision is identical to that in the applicable AFMS specified in paragraphs (h)(1) through (h)(6) of this AD.
For the AFM revision required by paragraph (g) of this AD, insert the applicable AFMS into the applicable Gulfstream AFM identified in paragraphs (h)(1) through (h)(6) of this AD.
(1) Gulfstream GIV/G300/G400 AFM Supplement GIV-2016-01, dated July 27, 2016, to the Gulfstream GIV AFM, dated April 22, 1987; the Gulfstream G300 AFM, dated January 15, 2003; and the Gulfstream G400 AFM, dated November 18, 2002.
(2) Gulfstream G450/G350 AFM Supplement G450-2016-01, dated July 27, 2016, to the Gulfstream G450 AFM, dated August 12, 2004; and the Gulfstream G350 AFM, dated October 28, 2004.
(3) Gulfstream GV AFM Supplement GV-2016-01, dated July 27, 2016, to the Gulfstream GV AFM, dated April 11, 1997.
(4) Gulfstream G550/G500 AFM Supplement G550-2016-01, dated July 27, 2016, to the Gulfstream G550 AFM, dated August 14, 2003; and the Gulfstream G500 AFM, dated December 5, 2003.
(5) Gulfstream GVI (G650) AFM Supplement G650-2016-01, dated July 27, 2016, to the Gulfstream GVI (G650) AFM, dated September 7, 2012.
(6) Gulfstream GVI (G650ER) AFM Supplement G650ER-2016-03, dated July 27, 2016, to the Gulfstream GVI (G650ER) AFM, dated October 2, 2014.
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.
