I thought it had been established that they were below their Safety Altitude in IMC conditions. Is that not crew error? JP
If it was a deliberate act.. yes
If it was because if a mistake .. yes
If it was through a mechanical fault .. NO
No-one knows the cause .. which of those 3 reasons apply ?? as there is doubt .. they must be cleared ..
As said before ... let us try and keep it simple
THERE IS NO PROOF OF WRONG DOING, NO EVIDENCE TO SUBSTANTIATE AN ERROR, THE CAUSE IS, AND REMAINS, UNKNOWN.