The NTSB determined the probable cause to be (in part), "the flight crewmembers' failure to perform the flight control check before takeoff, their attempt to take off with the gust lock
system engaged, and their delayed execution of a rejected takeoff after they became aware that the controls were locked.
It did so by preventing the throttles from moving if the gust lock
The preliminary report from the National Transportation Safety Board on the May 31 crash at Hanscom Field outside Boston also indicated a possible problem with a mechanical gust lock
system on the Gulfstream IV, which protects aircraft components from wind damage while planes are parked.
Believe it or not, one pilot paged through the advisories and warnings on the MFD too quickly, released the rotor brake while the gust lock
was still engaged and destroyed the gust lock
I was looking out the port side at my wing when my COTAC tried to stow the gust lock
and lock the wings in place.
The NTSB also said Gulfstream should modify the gust-lock system on the G-IV, to be sure that crews can't accelerate to take-off speed with the gust lock
The report states the aircraft's flight data recorder showed "the elevator control surface position during the taxi and [attempted] takeoff was consistent with its position if the gust lock
was engaged." However, the control lock handle, located on the right side of the control pedestal, was found in the off position, and the elevator control lock latch was found not engaged.
While this aircraft was tied down, its control yoke was secured in the full-aft position with a seat belt instead of the approved gust lock
And these are the kinds of situations leading us to forget removing a gust lock
, checking the oil or adding fuel.
Then there was the other Florida pilot, this time of a C172, who couldn't rotate on takeoff and ran off the end of the runway, at which point he noticed the gust lock
still in place.
Aircraft had been parked outside without gust locks
On those occasions, when a company aircraft was to remain on the ground overnight or was unattended for a long period in windy conditions, it was my responsibility at airports to which I was assigned, to place the elevator gust locks
on the company DC-3s.