Pure speculation as not a planefag tho this Anon loves them to bits (not a homo).

Underbelly looks like:

McDonnell-Douglas MD80

Airbus A340

Boeing 727

Boeing 757

Looking at the 3 most famous crashes involving shoot downs:

Malaysia Airlines flt 17 - Boeing 777-200ER in 2014

TWA flight 800 - Boeing 747-131 in 1996

and …possibly bingo?

United Airlines Flight 93 - Boeing 757 in 2001