United States Air Force - USAF (since 1947)

While on an airlift sortie, the airplane was hit by enemy fire. The crew elected to divert to Biên Hòa Airport for an emergency landing but on descent, the airplane went out of control and crashed in flames 10 km from the airfield. All six crew members were killed.
Crew:
1st Lt Neil William Hayden,
1st Lt Douglas McArthur Evans,
M/Sgt Duane Leland Hartenhoff,
T/Sgt Kermit Bruce Roberts,
S/Sgt Carl Joseph Wanner,
Sgt Milton Jackson Bush.

Shortly after a night takeoff from Andersen AFB, while climbing to a low height, the pilot-in-command initiated a turn to the right when control was lost. The airplane crashed into the sea few dozen yards offshore and disintegrated on impact. All six crew members were killed. They were enroute to Vietnam.
Crew:
Cpt Larry Ivan Broadhead, pilot,
1st Lt Maurice Edward Lundy, copilot,
Cpt James L. Sipes, navigator,
Cpt Russell L. Platt, radio navigator,
1st Lt Thomas R. McCormick, EWO,
M/Sgt Harold B. Deel, air gunner.

Crashed in unknown circumstances while on approach to Castle AFB. All seven crew members were rescued while the aircraft was destroyed.

On final approach to Lộc Ninh, the airplane was hit by ground fire. Upon touchdown, several tires burst. The airplane went out of control, veered off runway and came to rest in flames. All three crew members escaped uninjured while the aircraft was destroyed by a post crash fire.

An EC-121R, 67-21493, callsign "BATCAT 21" from the 554th Recon Sq, was scheduled for a combat tactical mission out of Korat, Thailand. BATCAT 21 started engines approximately 15:20 and commenced taxi to run-up position at 15:30. After completing engine run-up, the flight was cleared for takeoff by Korat Tower at 15:54 and was advised to contact departure control. BATCAT 21 established contact with departure control and requested information on the position, direction of movement and speed of the thunderstorm cell near the base. Departure control advised BATCAT 21 that the thunderstorm was over the base and extended 20 miles southwest. BATCAT 21 requested a right turn after takeoff and radar vectoring around the thunderstorms. The controller requested the crew to maintain runway heading and indicated that he would vector the aircraft around the thunderstorms. Prior to becoming airborne, BATCAT 21 was advised that he was cleared to turn right to two eight zero degrees. The flight reported airborne at 15:58 and departure control advised the heading was two eight zero degrees and he would radar identify BATCAT 21. This was acknowledged and a short time later the crew requested to make a right turn if possible as it was very turbulent. Korat departure control approved the request. No further transmissions were received from BATCAT 21. The aircraft impacted with the ground gear up, engine power METO. The initial point of impact was in a rice paddy at a ground speed of 221 knots. Indicated airspeed was approximately 150-160 knots. As the aircraft traversed the rice paddies the under part of the wings and the propellers began to disintegrate. A dike separating the rice paddies, 80 yards from impact, started the disintegration of the accessory section of the engines. The right wing then struck a tree stump causing the path of the aircraft to veer slightly right. It continued on this path an additional 30 yards, struck another stump and returned to its original path across the ground, striking a tree with the number 2 engine and exploding 255 yards from impact. The fuselage continued down the rolling hill separating the two rice paddy areas and flipped to the right (the right side of the cockpit being the pivot point), finally coming to rest 300 yards from the touchdown point.
Source: ASN

Crashed in unknown circumstances.

During the takeoff roll at Loring AFB, the crew encountered technical issues with the water injection system and the captain decided to abort. Unable to stop within the remaining distance, the airplane overran, went down an embankment and came to rest in flames, broken in two. All seven occupants were rescued while the aircraft was destroyed.

While approaching Nakhon Phanom Airport following an interdiction mission, the crew was trying to establish whether the gear was down or not when both engines failed. The airplane stalled and crashed, killing both pilots.
Crew:
Cpt Neal E. Monette,
Maj John V. Callanan.

While approaching Ching Chuan Kang AFB in Taichung, the crew encountered poor weather conditions. In below weather minima, the captain decided to continue the approach when the airplane struck the ground and crashed in flames short of runway threshold. Nine crew members were killed while three others were seriously injured. The aircraft was totally destroyed. All three survivors died from their injuries on 14, 15 and 16 of March 1969.

On final approach, the airplane was too low and crashed short of runway threshold. All three crew members were injured while the aircraft was destroyed.