Flight

The crew was engaged in a night training flight and left the RAF Brampton in the early evening on a combined exercise with three other similar aircraft. En route, the crew encountered low visibility, marginal weather conditions and strong winds, which caused the aircraft to be off the intended course when it struck the summit of a hill with its right wing and crashed. All five crew members were injured and evacuated while the aircraft was damaged beyond repair.
Crew:
Sgt John Maurice Couling, pilot,
P/O George Douglas Eakins, observer 3.

The crew was engaged in a night training flight and left the RAF Brampton in the early evening on a combined exercise with three other similar aircraft. En route, the crew encountered low visibility, marginal weather conditions and strong winds, which caused the aircraft to be off the intended course when it struck the summit of Mt Great Dodd. All five crew members were injured and evacuated while the aircraft was damaged beyond repair. Few hours later, the pilot died from his injuries.
Crew:
Sgt Waclaw Mackiewicz, pilot, †
Sgt John Convery,
Sgt Foster Wilson,
Sgt McAdory,
Sgt John Charles Eaton.

The aircraft crashed in unknown circumstances in the Chirdwin Valley. No trace of the aircraft nor the crew was found.
Crew (6th Squadron):
T/Sgt Kullervo T. Aaltonen,
2nd Lt Raymond V. Bouche,
F/O Kenneth E. Grill,
T/Sgt Richard Stapleford,4
1st Lt Jack R. Tate,
2nd Lt Max E. Wilbur.

The pilot was completing a solo training flight when the accident occurred in unknown circumstances. The pilot was unhurt and the aircraft was damaged beyond repair.

The crew was engaged in an anti-submarine mission off the coast of Trinidad Island. The aircraft crashed into the sea off the Island in unknown circumstances, but most probably during or after an engagement with enemy submarine. SAR operations did not find any trace of the aircraft nor the 12 crew members based at Waller Field, Trinidad.

During a training sortie, the Lockheed RB-34 Ventura went out of control and crashed into the Wolf Hill Forest Reserve, south of Smithfield. All three crew members were killed.

While on a survey flight off the north coast of Iceland, the four-engine aircraft was shot down by two USAAF P.38 Lightning and crashed into the Greenland Sea off the Grimsey Island. All seven crew members took refuge in a dinghy and were later rescued while the aircraft sank and was lost.
Crew (I/KG40):
Karl Holtrup,
Günter Karte,
Josef Teufel,
Herbert Richter,
Emil Brandt,
Wilhelm Lehn,
Siegfried Klinkmann.
Source: http://aviation-safety.net/wikibase/wiki.php?id=78787

While performing tactical maneuvers during a training sortie, the aircraft went out of control and crashed in Ashley Walk, north of Amesbury. All six crew members were injured while the aircraft was damaged beyond repair. Crew from the 617th Squadron.

The seaplane left RAF Castle Archdale around 0500LT on a routine maritime patrol flight to Reykjavik, Iceland. Around 0915LT, the crew spotted the German U-Boat registered U-489 that was performing its first sortie from Kiel. The crew of the Sunderland completed four attacks when he was hit by enemy fire. The captain was forced to ditch the aircraft that sank within 5 minutes. Five crew members were killed while six others were rescued. The U-Boat was lost as well.
Crew (423rd Squadron):
F/O Harry Bertram Parliament,
Sgt Frank Ginger Hadcroft 9.

En route from Poona to Bombay in marginal weather conditions, the three-engine aircraft hit the slope of a mountain located north of Lonavala. All six occupants were killed.