Originally Posted by lemme @ 2nd Jan 2017, 20:59
Until 60 knots, there should be considerable scrutiny on setting takeoff power. With the data suggesting this speed was never achieved, then the pilot monitoring should have had full attention on the engine instruments, and should have noted reverser deployment without any delay. I would have expected both throttles to be slammed to idle in this occurrence, in less than three seconds to allow for reaction, and engines spooled down about three seconds later.
As mentioned earlier in the thread, uncommanded deployment of either reverser just after takeoff thrust had been applied was a simulator exercise, (A320, 1992). If the takeoff thrust was not immediately reduced, the airplane headed for the weeds 100% of the time.
While an uncommanded deployment would likely be a 10^-9 occurrence, the exercise was intended to reinforce the importance of keeping one's eyes on the engine instruments when setting power and during the entire takeoff run.