You can’t sue a defense contractor for a plane load of soldiers dying in a military plane crash. But you can sue a defense contractor who builds a commercial plane in which people die in, see L1011.
Boeing’s killed a lot more folks in commercial airlines than Lockheed has. L-1011 had 3 fatal crashes (plus an ejection event).
Domestic:
1) December,1972 - Eastern Airlines pilot error (flew into the swamp)
2) August, 1985 - Delta Airlines (pilot tried to land in adverse weather conditions. Led to deployment of Doppler weather radar at airports)
Saudi:
3) August, 1980 - fire in cargo area (may have been terrorism although no one claimed responsibility). Insulation in the cargo area was removed from other planes.
4) December, 1980 - Landing gear mishap caused a hull rupture - 2 passengers fell out.
Other:
5) May, 1986 - Terrorist bombing at Columbo, Sri Lanka killed 20 passengers. (Bomb was positioned near location of the first Saudi event, but went off before the plane was in the air).
Compares favorably to other airplanes - only two passengers killed by faulty equipment, and that was probably related to maintenance issues.