The results of an investigation into the C-5 Galaxy crash at Dover Air Force Base, Del., on April 3 found that human error was the cause.
Link to the report
some more details
C-5 Galaxy crashes, no fatalities
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animation of the approach can be found here
You can see very well how they make the mistake by putting eng 3 (fully operational) to idle (flight idle 29 % N1) and advancing throttle of eng 2 (not running). So they where flying a C-5 heavy loaded on 2 engines on short final and by retracting the flaps to 40 % they stalled !
You can see very well how they make the mistake by putting eng 3 (fully operational) to idle (flight idle 29 % N1) and advancing throttle of eng 2 (not running). So they where flying a C-5 heavy loaded on 2 engines on short final and by retracting the flaps to 40 % they stalled !