Airworthiness Directive · Amendment 39-13978 · Gulfstream Model GV-SP Series Airplanes
Gulfstream Model GV-SP Series Airplanes
This AD applies to Gulfstream Model GV-SP series airplanes, certificated in any category; with serial numbers 5001 through 5062 inclusive.
The FAA is adopting a new airworthiness directive (AD) for certain Gulfstream Model GV-SP series airplanes. This AD requires repetitive inspections of the avionics standard communication bus (ASCB) for any noise interference and repair of the ASCB if noise interference is found. This AD also requires revisions of the airplane flight manual (AFM) to prohibit dispatch of any flight with the integrated standby flight display (SFD) inoperative; to add procedures to facilitate recovery of the cockpit display units in the event that the cockpit displays go blank; and to add flightcrew briefings on the use of standby instruments in case the cockpit display units go blank and do not recover. This AD also requires installing an avionics software update and a hardware upgrade to the Honeywell Primus Epic system to correct a display blanking problem; installing the update will allow removal of certain AFM revisions and will end the repetitive inspections of the ASCB. This AD is prompted by a report indicating that all four cockpit flight panel displays went blank simultaneously. We are issuing this AD to prevent a software error from blanking the cockpit display units, which will result in a reduction of the flightcrew's situational awareness, and possible loss of control of the airplane. We are also issuing this AD to address noise interference in the ASCB, which can interfere with the display recovery after a blanking event and consequently extend the time that the displays remain blank. In addition, we are issuing this AD to ensure that the flightcrew is advised of the procedures necessary to address blank cockpit display units.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 50 flight hours after the effective date of this AD, and thereafter at intervals not to exceed 60 days: Do an inspection of the ASCB for any noise interference indications in accordance with the Accomplishment Instructions of Gulfstream G500 Alert Customer Bulletin 2, dated October 27, 2004, including Appendix A; or Gulfstream G550 Alert Customer Bulletin 2, dated October 27, 2004, including Appendix A; as applicable. If any noise interference indication is found during any inspection required by this AD, before further flight, repair the ASCB according to a method approved by the Manager, Atlanta Aircraft Certification Office (ACO), FAA.
Within 72 hours after the effective date of this AD, revise sections of the applicable AFM in accordance with the actions required in paragraphs (g)(1), (g)(2), (g)(3), and (g)(4) of this AD. Any further revisions to the AFM must contain the identical procedures in the applicable sections of the AFM revisions as required by this AD.
Note 1: This may be accomplished by inserting a copy of Gulfstream G500 AFM GAC-AC-G500-OPS-0001, Revision 7, dated December 28, 2004; or Gulfstream G550 AFM GAC-AC-G550-OPS-0001, Revision 9, dated December 28, 2004; as applicable; into the applicable AFM.
(1) Revise the Limitations section of the Gulfstream G500 AFM and the Gulfstream G550 AFM by inserting a copy of the procedures in Section 1-34-140, “3-in-1” Integrated Standby Instrument System (SFD), of Gulfstream G500 AFM GAC-AC-G500-OPS-0001, Revision 7, dated December 28, 2004; or Section 1-34-140, “3-in-1” Integrated Standby Instrument System (SFD), of Gulfstream G550 AFM GAC-AC-G550-OPS-0001, Revision 9, dated December 28, 2004; as applicable; in the applicable AFM.
(2) Revise the Limitations section of the Gulfstream G500 AFM and the Gulfstream G550 AFM by inserting a copy of the procedures in Section 1-101-10, Checklist Compliance, of Gulfstream G500 AFM GAC-AC-G500-OPS-0001, Revision 7, dated December 28, 2004; or Section 1-101-10, Checklist Compliance, of Gulfstream G550 AFM GAC-AC-G550-OPS-0001, Revision 9, dated December 28, 2004; as applicable; in the applicable AFM.
(3) Revise the Abnormal Procedures section of the Gulfstream G500 AFM and the Gulfstream G550 AFM by inserting a copy of the procedures in Section 3-16-150, Loss of All Display Units (DUs), of Gulfstream G500 AFM GAC-AC-G500-OPS-0001, Revision 7, dated December 28, 2004; or Section 3-16-150, Loss of All Display Units (DUs), of Gulfstream G550 AFM GAC-AC-G550-OPS-0001, Revision 9, dated December 28, 2004; as applicable; in the applicable AFM.
(4) Revise the Normal Procedures section of the Gulfstream G500 AFM and the Gulfstream G550 AFM by inserting a copy of the procedures contained in the applicable “Section” listed in Table 1 of this AD.
| Section | Applicable gulfstream AFM |
|---|---|
| Section 02-04-20, Taxi/Before Takeoff | G500 AFM GAC-AC-G500-OPS-0001, as specified in Revision 7, dated December 28, 2004. |
| Section 02-04-20, Taxi/Before Takeoff | G550 AFM GAC-AC-G550-OPS-0001, as specified in Revision 9, dated December 28, 2004. |
| Section 02-05-30, Descent | G500 AFM GAC-AC-G500-OPS-0001, as specified in Revision 7, dated December 28, 2004. |
| Section 02-05-30, Descent | G550 AFM GAC-AC-G550-OPS-0001, as specified in Revision 9, dated December 28, 2004. |
| Section 02-05-50, Before Landing | G500 AFM GAC-AC-G500-OPS-0001, as specified in Revision 7, dated December 28, 2004. |
| Section 02-05-50, Before Landing | G550 AFM GAC-AC-G550-OPS-0001, as specified in Revision 9, dated December 28, 2004. |
Note 2: Instead of inserting the AFM procedures required by this AD into the AFM, use of the information contained in Gulfstream G550 AFM GAC-AC-JAA-550-OPS-0001, Revision 2, dated January 12, 2005, is considered acceptable for airplanes operated under/in accordance with Joint Aviation Authority/European Aviation Safety Agency (EASA) regulations/supervision/oversight.
Within 90 days or 300 flight hours after the effective date of this AD, whichever occurs first, do the actions required in paragraphs (h)(1) and (h)(2). Doing the actions in paragraphs (h)(1) and (h)(2) ends the requirements of paragraph (f) of this AD, and the AFM revisions required by paragraphs (g)(1), (g)(2), and (g)(4) of this AD may be removed from the AFMs.
(1) Install an avionics software update for the Honeywell Primus Epic system in accordance with the Modification Instructions of Gulfstream G500 Aircraft Service Change 902, dated December 30, 2004; or Gulfstream G550 aircraft Service Change 902, dated December 30, 2004; as applicable.
(2) Concurrent with the actions required in paragraph (h)(1) of this AD, install hardware upgrades for the Honeywell Primus Epic system in accordance with the Modification Instructions of Gulfstream G500 Aircraft Service Change 043, dated December 30, 2004; or Gulfstream G550 Aircraft Service Change 043, dated December 30, 2004; as applicable.
(i) 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
