Gulfstream Mod Ends G650/650ER Speed Restriction | Aviation International News

Gulfstream Mod Ends G650/650ER Speed Restriction

Gulfstream released a service change for the G650/650ER that modifies the rudder trailing edge contour to prevent yawing in the event of rudder failure.

By Chad Trautvetter • Online Editor

December 10, 2019

Gulfstream has released Aircraft Service Change (ASC) 134 for the G650/650ER that modifies the rudder trailing edge contour to prevent an aircraft yawing condition in the event of rudder control failure. Once completed, this modification eliminates a speed restriction for the twinjet “to remain at or below 250 KCAS/Mach 0.925, which is typically not an impact in cruise flight.” The limit came per a maintenance and operations letter issued by Gulfstream last month, following an October 24 rudder control failure incident that resulted in yawing motion not previously “seen on in-service G650 aircraft and did not take place during flight testing."

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