thrust reversers, lauda air
people keep asking about the possibility of a thrust reverser deployment.
After the Lauda air all reverser types had to be redesigned with 3 locks. two different systems, electric and hydraulic. i worked on many variations but not this particular thrust reverser type. nothing is impossble but i would be very surprised at this being the cause.
reversers had to be retrofitted as well with the extra locks.
in terms of likelihood, way down the list.