Mace Canute
Elite Member
Perhaps. But, is that proven fact?
"To have the maximum range and therefore the largest choice of possible landing sites, he needed to fly the 767 at the optimal glide speed."
All pilots are trained to do that.
Pilots that are not trained in gliders, do manage to glide to land too.
A little farther along in the Wiki article...
As the runway drew near, it became apparent that the aircraft was coming in too high and fast, raising the danger of running off the runway before it could be stopped. The lack of hydraulic pressure prevented flap/slat extension that would have, under normal landing conditions, reduced the stall speed of the aircraft and increased the lift coefficient of the wings to allow the aircraft to be slowed for a safe landing. The pilots briefly considered a 360-degree turn to reduce speed and altitude, but decided that they did not have enough altitude for the manoeuvre. Pearson decided to execute a forward slip to increase drag and lose altitude. This manoeuvre is commonly used with gliders and light aircraft to descend more quickly without increasing forward speed.
From The Air Canada Boeing 767 "Gimli Glider" 1983 accident re-visited. [Archive] - PPRuNe Forums
As part of the investigation into that accident Air Canada tested several crews in the Boeing 767 simulator by having them run the identical scenario - that is double engine failure in cruise and forced landing with no power. The results showed that all crews crashed the first time.
Captain Pearson Pearson had extensive experience flying gliders which he put to good service that day.