Training

Shortly after takeoff from RAF Marham, while in initial climb, the crew noticed a fuel leak on the right wing and decided to return for an emergency landing. Unfortunately, the visibility was limited due to poor weather conditions and the pilot-in-command was forced to complete the approach with its radio compass as sole reference as there were no ATC or ground navigation aids at that time. During a last turn to join the runway approach path, the airplane lost height and crashed in a field located five miles northeast of the airfield. Four crew members were killed while four others were injured.

The takeoff roll was abandoned for unknown reason. Unable to stop within the remaining distance, the aircraft overran and came to rest. A pilot was killed while the second occupant was injured.
Crew:
A1c Thomas J. Condron, †
1st Lt Abner L. Wilkerson.

The crew was performing a local training sortie at RAF Benson. During the final approach completed in marginal weather conditions, the crew did not realize that his altitude was too low when the airplane hit the ground and crashed few hundred yards short of runway threshold. The aircraft was destroyed and all four crew members were killed.

The crew was performing a local training sortie at RAF Tangmere. On final approach, the right engine failed. The pilot-in-command continued the approach but on short final, decided to make a go around when the aircraft stalled and crashed in a field located short of runway. Three crew members were injured while the captain was killed.

During a training sortie, while cruising at low altitude, the crew made a sharp turn to the left when the left wing hit tree tops. The twin engine aircraft lost height and crashed in flames in the Morar forest, killing both pilots.

In the early morning, two Neptunes of the Navy based at Quonset Point NAS were engaged in an anti-submarine warfare exercise off Block Island with the submarine USS Piper (SS-409) and the navy tug USS Hopi (AFT-71). Shortly after 0400LT, both aircraft rendezvoused over the Jamestown Bridge in Narragansett Bay, and headed for the operational area about 70 miles off Block Island. In unknown circumstances, the airplane banked right and then crashed into the sea. All eight crew members were killed.
Crew:
Lt Noble R. Kean,
Lt Thomas J. Tiernan,
A3c John R. Quirk,
A2c George A. Buehler,
Lt Seymour A. Moyl,
A1c Roland O. Eades,
Sea Salvatore A. Coia,
Sea Joseph A. gray.
Source:
http://www.newenglandaviationhistory.com/tag/p2v-neptune-124242/

The aircraft was engaged in a training mission, carrying two pilots and a RAF cadet aged 15. Shortly after takeoff, while climbing, the airplane banked right, overturned and crashed in a huge explosion near the runway end. The aircraft disintegrated on impact and all three occupants were killed.

While performing a local training flight, the airplane registered 59923 (VP-772) hit the slope of Mt South located in the Olympic Mountain range, about 14 miles northwest of Shelton. All 11 crew members were killed.

Shortly after takeoff from Agana-Harmon Field, while climbing by night, the aircraft suffered an engine failure. The crew elected to return for a safe landing when the seaplane stalled and crashed near the airport. Three crew members were killed while two others were rescued. The aircraft was destroyed.
Those killed were:
Lcdr R. S. McClendon,
Lt M. L. McGregor,
Sk3 H. J. Beltz.

The crew was performing a routine training mission out of RAF Upper Heyford. En route, the pilot lost control of the airplane that dove into the ground and crashed in a field located two miles west of Great Dunmow. The aircraft disintegrated on impact and all 11 crew members were killed. It was later reported that the airplane was carrying a load of ammunition that exploded for several hours, hampering the rescuers' mission.