“The aircraft is heavily designed to take a hit and stay in the air. There was talk in the thread about an engine shutdown.”
There is a big problem should one or more AF1 turbofans on the same side ingest a drone and then disintegrate and fall off the wing, possibly causing the airframe to become uncontrollably unstable and flip over.
See Yukla 27 AWACS crash:
https://en.wikipedia.org/wiki/1995_Alaska_Boeing_E-3_Sentry_accident
“There is a big problem should one or more AF1 turbofans on the same side ingest a drone and then disintegrate...”
This is a given with any aircraft. If you lose power on a 747 totally on one wing, you will not stay in the air. But the sighting they had was one drone, if it actually existed, and could have been swept into a turbofan. But the aircraft would fly on 3. And if the disintegration takes enough of the wing, it will get unstable as you mentioned. But that stands to reason as if you take out a big enough piece of the wing, anything may come down.
rwood