Nike GV Incident Prompts Service Letter

Gulfstream’s initial investigation into the November 21 incident involving a jammed gear on Nike’s GV revealed corrosion on the main landing gear (MLG) uplock linkage. According to a December 5 Gulfstream Service Letter, “It is suspected this corrosion caused the linkage bungee to freeze in the extended position, contributing to the MLG door being out of sequence during the extension and retraction cycles. With the door linkage system out of sequence, hydraulic pressure was attempting to close the door before the landing gear had completed its retraction cycle.” The gear finally was freed after the Nike crew removed hydraulic pressure by temporarily shutting down the left engine and performing a negative-g maneuver.