Lockheed C-130 Hercules

While returning from a supply mission, the aircraft exploded in midair and crashed into the sea some 24 km off Đồng Hới. All six crew members were killed.
Crew:
1st Lt. Albert Michael Prevost,
Maj Richard Andrew Alm,
G/Sgt Galen Francis Humphrey,
Sgt Peter George Vlahakos,
S/Sgt Donald Leroy Coates,
S/Sgt Russell Burr Luker.

After touchdown at An Khe Airport, the airplane went out of control, veered off runway and came to rest. All five crew members were uninjured while the aircraft was written off. The airplane was completing a resupply mission from Saigon.

On final approach to Pleiku Airport, at an altitude of 1,200 feet, the airplane was hit by enemy fire and crashed about 5 km from the airfield. All five crew members were killed. The airplane was performing a flight from Saigon-Tan Son Nhat Airport, carrying a load of 30,000 pounds of detonators.
Crew (463 TCW Mactan, Philippines):
Cpt Richard Joseph Callanan,
Cpt Lee Christopher Dixon,
1st Lt Jon Alfred Greenley,
S/Sgt James Robert Lute,
A2C Lowell Franklin White.

The aircraft was attempting to land at Tuy Hòa Airport under a very low cloud base when it was hit by ground fire 8 km south of the airbase and crashed killing all five crew members. The airplane, based at Nha Trang, was bringing in a load of 13 tons of aviation fuel and it was 1st Lt Smith's first mission as aircraft commander. Enemy action was never actually confirmed to have caused the loss of this aircraft which may simply have flown into high ground in poor visibility. For some reason the remains of 1st Lt Wax were not recovered and identified until December 1996.
Crew:
1st Lt Donald Clayton Smith,
1st David J. Wax,
Cpt Terry Fisher Katterhenry,
T/Sgt William Henry Crisp,
A1C Willie Mitchell.
Source: Chris Hobson

Crashed on takeoff at Bitburg AFB while engaged in a local training mission. All six occupants were killed. The airplane stalled after rotation for undetermined reason.

The crew elected to takeoff from Chu Lai Airbase with one engine inoperative. The airplane stalled and crashed. All five crew members were slightly injured and the aircrarft was destroyed.

The approach to Quy Nhơn was completed under VFR mode in heavy rain falls when the airplane struck the water surface and crashed into the sea few km short of runway. Three crew members were seriously injured while two others were killed as well as both passengers. At the time of the accident, the visibility was limited due to rain falls.
Those killed were:
Crew:
Cpt Fred Rost Tice,
S/Sgt Walter Otho Tramel.
Passengers:
Cpt David Eugene Benson,
Cpt Thomas James Tolliver.

The crew was engaged in a paratroops dropping mission. In unclear circumstances, the Hercules was intercepted by the pilot of a RAF Javelin who forced the crew to land at the nearest airport. Shortly later, the Hercules went out of control and crashed, killing all five crew members. It is unknown if the airplane was shot down or not.

The aircraft was on a flight from Hong Kong to Saigon with an intermediate stop in Đà Nẵng, carrying 6 crew members and 65 soldiers on leave. During the takeoff roll on runway 13, at a speed of 150 km/h, the flight engineer reported a loss of pressure on engine number one and instructed the pilot to abandon the takeoff procedure. The copilot, who was in the left seat, reduced engine power when, in the mean time, the captain who was seating in the right seat, started the rotation. In stall condition with an asymmetrical thrust, the airplane climbed to a height of 100 feet then banked left and struck a 2 meters high sea wall with its left wingtip. It flew another 250 meters then crashed into the Kowloon Bay. Both pilots and 10 passengers survived while all 59 other occupants were killed.

While landing on an airport somewhere in Pakistan, the C-130 went out of control, veered off runway and came to rest. There were no casualties but the aircraft was damaged beyond repair.