Thanks my friend @eb801!
All three LG main doors, upon engine shutdown, are in closed position. Immediately after the mechanic manually unlocks them to inspect all three bays, then he closes them back. However, after this second "closing" the doors do not rest fully flat, but protrude a tad, which is the normal Mirage2000 posture when it is parked. Here is my attempt to replicate it...
The doors close fully and lock upon engine start.
Thanks for stopping by!