They also said that engine's thrust reverser had been repaired a little more than two months ago.
Many also use thrust reversers to slow down the aircraft upon landing.
Some work had been done on an engine part, a thrust reverser, shortly before takeoff.
The thrust reversers are only activated if the latter condition is true.
Video taken at the crash site shows the aircraft's thrust reversers in the deployed position.
At the last possible moment she pulled up and hit the thrust reversers.
A thrust reverser coming on in flight may not have been survivable, anyway.
However various maintenance replacements have seen the thrust reversers in the same position as the -30 and -40.
In full compliance with the certification requirements, the test was performed without a thrust reverser.
Boeing, not the engine suppliers, makes the thrust reversers for 767's.