Test

The crew was performing a circular test flight at RAF Warton after the plane had been refurbished. Following an uneventful flight, the crew started the approach to runway 08 and received the authorization to land. At that time, weather conditions deteriorated with low clouds down to 120 meters above ground, heavy rain falls and winds gusting up to 25 knots. From a height of dozen feet, the aircraft went out of control, banked left and came with wings near vertical before crashing in a huge explosion in the center of the village of Freckleton. The aircraft hit several houses, a school and a cafe as well. All three crew members were killed and 58 others on the ground: 38 children and two teachers in the school, and 18 people in the cafe: seven US officers, four British officers and seven civilians. To date, this was considered as the worst air disaster in the world.
Crew:
1st Lt John A. Bloemendal, pilot,
T/Sgt James M. Parr, copilot,
Sgt Gordon W. Kinney, flight engineer.
More info on http://laituk.org/B-24 42-50291.htm

Crashed on landing at Grand Island Airport, killing all five crew members. The crew was involved in a control flight, prior to delivery to the RAF.

Crashed in unknown circumstances while making a test flight near the Obozerski Airport, in the region of Plessetsk, some 200 km south of Arkhangelsk. All six crew members were killed.

The crew was engaged in a tests flight on this twin engine aircraft that encountered technical problems previously. En route, the aircraft went out of control and crashed in unknown circumstances in Yanakie, south of Victoria. All three crew members were killed.
Crew (67th Squadron):
F/Sgt David Guise Shanks, pilot,
LAC John Joseph Griffin
AC1 Ronald Oswald Rathke.

The crew consisted of pilots and engineers who were performing an evaluation flight for the a Naval Air Training Command (NATC). In flight, the twin engine aircraft went out of control and crashed near the airfield. A crew member was killed while all seven other occupants were injured.

The crew was engaged in a test flight. Take off procedure was attempted in frosty conditions from the Clyde River, off Helensburgh. During initial climb, the four engine aircraft stalled, crashed and sunk. Two crew members were rescued while the test pilot H. G. White was killed.

Involved in a test flight (propeller test following maintenance), the aircraft was carrying a crew of five. In the morning, the crew left Ladd AAF located in Fort Wainwright, east of Fairbanks. At around 1100LT, the crew overflew Big Delta and maintained an altitude of 23,000 feet. While cruising in clouds, the number one engine failed. Shortly later, the pilot lost control of the aircraft that entered a spin. During the descent, the captain ordered the crew to abandon the aircraft but only two occupants managed to bail out. Out of control, the aircraft dove into the ground and eventually crashed in a huge explosion near the Charley River. By an outside temperature of -51° C, one of both crew that bailed out landed in a thick layer of snow and tried to find his colleague but without success. For six days, SAR operations cleaned out a large area but did not found any trace of the aircraft nor the five occupants. In extreme cold and appalling conditions, the First Lieutenant Leon Crane made 84 days before returning to civilization and eventually be transferred to his base. All rest of the crew did not survive the accident.
Crew:
2nd Lt Harold E. Hoskin, †
M/Sgt Richard L. Pompeo, †
1st Lt James B. Sibert, †
1st Lt Leon Crane,
S/Sgt Ralph S. Wenz. †

The left engine has been changed and the crew was completing a test flight following maintenance. The aircraft left Fort Benning AFB at 0946LT for a control flight. While cruising at a height of 3,500 feet, the crew encountered technical problems with the right engine that was over speeding. The captain decided to shut down the right engine and to feather the propeller but this was not possible, causing a high drag. He attempted to return to the base and informed ground of the when, on approach, the aircraft stalled and crashed in a field located 5 miles from runway 32 threshold. Two crew members were injured while the third occupant, 2nd Lt Robert A. Duclos, was killed.

Shortly after takeoff from Floyd Bennett Field in NY, while in initial climb, the float equipped aircraft stalled and crashed into the Jamaica Bay. The crew who survived was attempting a test flight when the accident occurred in unclear circumstances.

The crew was performing an air test when the Dakota collided with two balloon cables, one of which completely severed 15 feet of the port main plane. The aircraft crashed at the Bernhard Baron Pavilllion, Regent's Park, London, and was destroyed by fire. There were no survivors among the nine crew members.
Crew:
F/O James Allan Robertson, pilot,
F/O Theodore Myroslaw Hawryluk, copilot,
F/Sgt Henry Edgar Dennis, wireless operator and air gunner,
AC1 Ronald Eric Penn, flight engineer,
AC1 Hugh Richard Phillips, flight engineer,
AC2 Kenneth Thomas Ding,
AC2 Dudley Austin Westcott,
AC2 Ronald Douglas Brown,
LAC Jack Leonard Houghton.
Source:
http://www.rafcommands.com/forum/showthread.php?9450-512-Sqn-Dakota-FD899-6-10-1943