Test

The aircraft was involved in a ground crash test on behalf of the Flight Safety Foundation and assistance of North American Aviation. With no one on board, the aircraft was crashed at a speed of 130 knots against a concrete wall and was completely destroyed. The weapon cylinder in the cargo bay remained intact.
Thanks to Chris Baird - www.arizonawrecks.com

The crew was involved in a local test flight and the twin engine airplane was used for an electronic test project mission. For such program, a special authorisation was granted to use the aircraft in an overweight configuration. After liftoff, during initial climb, the airplane encountered difficulties to gain height and its speed was too low. It stalled, struck the ground and crashed in flames. All four occupants were slightly injured and the aircraft was destroyed.

The aircraft took-off from Hatfield at 1652 hours to carry out the first of a series of production test flights for the purpose of qualifying for a Series Certificate of Airworthiness. The schedule for the flight called for stalling tests should the aircraft and the flight conditions be suitable. After take-off the aircraft climbed towards the north-east and at about 1830 hours, after completing the greater part of the flight test schedule, the stalling tests were begun. Three approaches to the stall were made in order to check the aircraft's stall warning and stall recovery systems and the flight engineer's log shows that with the aircraft in the landing configuration the stick shaker operated at 102 kt and the stall recovery system at 93 kt. The fourth stalling run was made at a height of 11 600 ft with the aircraft still in the landing configuration but, in accordance with the requirements of the test schedule, the stall warning and stall recovery systems had been made inoperative. Radio telephony communication with the aircraft consisted only of routine 11 messages until at 1834 hours when the pilot-in-command reported We are in a superstall at the moment". This was the last radiocommunication received. At about this time the aircraft was seen over Felthorpe flying very slowly heading south-west at about 10 000 ft. The nose was seen to go up 30 to 40 degrees and the aircraft began to turn to port; the starboard wing then dropped sharply and, following a short burst of engine power, the aircraft went into a flat spin to starboard. The spin continued, the aircraft turning once every 6 to 8 seconds until it reached the ground about a minute and a half later. All four crew members were killed.

A Fairchild C-119CF-FA Flying Boxcar transport plane, 51·8019, had undergone a periodic inspection and was dispatched with a minimum crew for a Functional Check Fight (FCF). In the course of conducting checks at an altitude of 5000 feet, the no. 2 prop did not go into full feather. It continued to windmill. The crew then decided to return to Belleville-Scott AFB, IL (BLV) immediately. The pilot requested a straight-in approach to runway 31. Engine no. 2 was shut down and the plane was configured for landing. The airplane was high on the approach so the crew executed a go around and came in for a second approach. This time the airplane was slightly high and too fast so the pilot again called for a go around. During the transition from a high rate of descent to level flight for go around, the airspeed remained around 130 knots IAS. The captain raised the flaps from 40° to 20° and then reached for the gear up switch. The aircraft struck the runway and slid off the end into a grassy field. A fire that ensued after impact was contained by base crash and rescue crews.
Source: ASN

Crashed in unknown circumstances near Luxor Airport while completing a local test flight. All four crew members were killed.

The crew was completing a local test flight for the GKAP Tupolev OKB (Tupolev Industries) and departed Moscow-Chkalovsky Airport. While flying in the vicinity of the airfield at a relative low altitude, the airplane went out of control dove into the ground and crashed in a huge explosion. All eight crew members were killed.

The crew was completing a local test flight when control was lost. The airplane crashed in the sea off Cuttyhunk Island, killing all four crew members. First C-2A Greyhound in service.

The crew was engaged in a test flight from Moscow to Ashgabat with an intermediate stop at Tashkent Airport. The takeoff was attempted with a total weight near the MTOW. After liftoff, the airplane nosed up then lost speed and height. At a height of 4-5 meters, the airplane struck a concrete wall, stalled then crashed in flames. Ten crew members were killed while seven others were injured. The aircraft, first prototype built in 1962, was destroyed. It made its first successful test flight on January 2, 1963.

Crashed in unknown circumstances somewhere in West Germany. The exact date of the mishap as well as the crew fate remains unknown. The aircraft should be delivered to the Turkish Air Force.

The pilot, sole occupant, was completing a local test flight out from Miami. Following an uneventful flight, the pilot was returning to Miami when both engines stopped simultaneously. Unable to maintain the requested altitude, he attempted to ditch the aircraft off Miami Beach. The airplane crashed into the sea at 1700LT and sank by a depth of few dozen feet. The pilot was rescued.