Military

En route, aircraft went out of control and crashed in Rabenwald, some 36 km northeast of Graz. Four crew were rescued while seven others were killed. Exact circumstances unknown.
Crew who were killed:
Harry Moore,
Bale Semack,
James Richels,
Gordon Thornton,
Roy Reneau,
James Milnes,
George Stout.
Taken prisoner:
Walter Cates,
Charles Freeman,
Carl Shedlock,
Francis Stack.

While descending to Palmale, aircraft was too low and hit the slope of Mt Pallet at a height of 7,300 feet and located some 20 miles southeast of Palmdale. All four occupants were killed.

While cruising at a height of 8,000 feet over the mountainous region of Arunachal Pradesh, crew informed ground he was losing his orientation and could not locate his position due to poor weather conditions (heavy rain falls). Captain also requested to ATC if they were able to see his lights but the answer was negative. Thirty seconds later, the aircraft hit a mountain slope and was demolished, killing all four occupants.
Crew:
2nd Lieutenant Jack Hunter, pilot,
2nd Lieutenant Alfred S. Hemmer, copilot,
Sergeant Inman A. Watson, radio operator,
Staff Sergeant John L. Weinberg, flight engineer.

En route, while cruising in a snowstorm, aircraft hit Mt Lyn Cowlyd located some 15 km southeast of Bangor, Wales. The pilot was killed while all three other occupants were injured.
Crew:
Sergeant Joseph William Francis Grant, pilot, †
Sergeant Robert Birch, navigator,
Warrant Officer Thomas Renni Renton, wireless operator,
Mervyn John Byrne, wireless operator.

Crashed on takeoff for unknown reason. Occupant fate unknown as well.

Few minutes after takeoff from McClellan AFB, while climbing, aircraft lost height and crashed in flames near the American River, south of the airbase. Two crew were killed while three others were injured.

En route, while cruising over the North Pacific, the aircraft disappeared in unknown circumstances. SAR operations were conducted and eventually suspended few days later as no trace of the aircraft nor the 14 occupants was ever found.

Shortly after takeoff from El Toro MCAS, while climbing, the aircraft crashed for unknown reason. All three crew were killed.

The aircraft was performing a flight on behalf of the Royal Australian Air Force with a crew of three en ten passengers on board. During the takeoff run, thw twin engine aircraft skidded on runway when the left main gear collapsed. Aircraft banked left, causing the left propeller to hit the ground and to be sheared off, hitting the nose of the airplane. While all 13 occupants were slightly injured, the aircraft was considered as damaged beyond repair.
Crew:
Captain John Robins, pilot,
Sergeant Ken Bird, copilot,
Sergeant Phoenix, radio operator.

Crashed on landing for unknown reason. No casualties.