For whatever the cause of a/p loss, the need for PF to 'correct' ('climb', 'roll'), and THS behaviour, the time of accident begins at 15 seconds prior to, and perhaps 15 seconds post, a/p loss. Upset prior to loss of a/p? Quite likely, for whatever the reason it dropped out, the definition for upset was concurrent. If in a climb that cannot be corrected, that is LOC. Whether electro or Weather, the definition for mechanical failure also is met, for loss of authority qualifies as loss of mechanical controls. Airframe damage is also quite possibly in there, the g string will be interesting.