Setting seats off
Provided we don't pretend to know what caused this tragic accident to a
superb flyer it seems reasonable to make a list of possible causes
I seem to recall an event on a RN Harrier in which the drogue gun was set off by the seat being lowered onto a stray wander light on the floor of the aircraft
The unfortunate pilot was thought to have dropped the wander light on the floor and while trying to recover it by the cable set the drogue gun off pulling him and his chute through a small hole in the canopy
We must avoid making silly assumptions but it is worth considering the seat as a unit rather than a group of bits