Airworthiness Directive · Amendment 39-21126 · Flight controls
Gulfstream Aerospace Corporation Airplanes
This AD applies to Gulfstream Aerospace Corporation Model GVI airplanes, certificated in any category, serial numbers 6001 through 6111, 6113 through 6133, and 6135 through 6274.
Note 1 to paragraph (c) of this AD: Model GVI airplanes are also referred to by the marketing designations G650 and G650ER.
The FAA is adopting a new airworthiness directive (AD) for certain Gulfstream Aerospace Corporation (Gulfstream) Model GVI airplanes. This AD was prompted by a report that the primary flight control actuation system (PFCAS) linear variable displacement transducer (LVDT) mechanical disconnect monitor may not trigger the disconnect of the affected control surfaces as required in the event of a control surface failure. This AD requires updating the software of each PFCAS remote electronics unit (REU), which includes an improvement to the LVDT. The FAA is issuing this AD to address the unsafe condition on these products.
Within the next 24 months after July 27, 2020 (the effective date of this AD), update the software for each PFCAS remote electronics unit (REU) from Label 34 to Label 35 by following the Accomplishment Instructions in Gulfstream G650 Customer Bulletin Number 201, dated September 28, 2017, or Gulfstream G650ER Customer Bulletin Number 201, dated September 28, 2017; the Modification Instructions, sections A through C, in Gulfstream G650 Aircraft Service Change No. 069, dated September 28, 2017, or Gulfstream G650ER Aircraft Service Change No. 069, dated September 28, 2017; and the Accomplishment Instructions in Parker Service Bulletin 469000-27-003, Revision 1, dated October 11, 2017; except you are not required to submit information to the manufacturer.
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
