Military

The aircraft left Naples-Capodichino Airport at 0800LT bound for Ramitelli AFB, with an intermediate stop in Foggia. Some thirty minutes later, the crew encountered foggy conditions and the visibility was low. Suddenly, the captain saw a mountain ahead of him and attempted to gain height. Unfortunately, the aircraft hit tree tops and crashed in a dense wooded area. Nine passengers were killed while all 13 other occupants, among them all four crew members, were injured.
Crew (436th TCG):
Lt Howard B. Wank, pilot,
Lt Marvin Butz, copilot,
S/Sgt Charles T. Taylor, radio operator,
Sgt Raymond H. Kelley, crew chief.
Passengers who were killed:
PFC Walker Dozier,
PFC Morgan Fairfield Jr,
T/Sgt James A. Gaston,
PFC Theodore Harrison,
Sgt James C. Wyatt,
PFC Earnest Hill,
PFC William L. Hill,
PFC Loney Portee,
Sgt James A. Wright.
Source: http://www.1943salerno.it/ritrovamenti/36-il-dakota.html

The airplane was completing a flight from Riyan to Salalah on behalf of the 44th SAAF Squadron, carrying five crew members and 27 passengers, among them locals. While approaching Salalah from the west in marginal weather conditions, the airplane struck the slope of a mountain, crashed and exploded about 48 km west of Salalah. The aircraft was totally destroyed and all 32 occupants were killed. The wreckage was found about 630 feet above sea level.
Crew:
Lt C. J. K. Schutte, pilot,
Lt J. H. Glenny, copilot,
Lt G. C. Pennington, observer,
Cpl R. Hosmer, wireless operator,
Cpl R. B. Boraine, wireless operator.

For undetermined reason, the aircraft belly landed and was damaged beyond repair. No casualties.

While cruising at low height in marginal weather conditions over the Irish Sea, the aircraft hit the Mull of Galloway (400 feet high) located south of Port Logan, Wigtownshire. The aircraft hit the mountain six feet from its summit and was totally destroyed. All 22 occupants were killed, among them two medical staff and US soldiers wounded in Normandy and flying back to the US.
Crew:
1st Lt Galen R. Hendricks, pilot,
2nd Lt Raymond Hutchings, copilot,
F/O Dan Willard Meshew, pilot,
2nd Lt Leon Julius Tully, navigator,
Sgt Jay V. Alcorn, radio operator,
S/Sgt Merl William Skinner, crew chief.
Passengers:
2nd Lt Mary Edith Jackley,
John Henry Salmi,
Maj Irving I. Shure,
2nd Lt John Wilbur Ingram,
2nd Lt Theron S. Ward,
Sgt Ernest Howard Corvin,
Sgt Billy G. Morris,
Cpl Elmer F. Lauf,
James D. Green,
Keith Glenn Lowdermilk,
Marcus Saspochnikoff,
James E. W. Ayers,
Edmund Leroy Davis,
Donald R. Hammerstrom,
Jack F. Sheidler,
LAC Samuel Gilmour.
Source:
http://www.peakdistrictaircrashes.co.uk/pages/scotland/Douglas-C-47A-42-93038-Cairngarroch-Bay.htm

The aircraft left Canton Island (Kiribati) at 1100LT bound for Honiara Airport, on Guadalcanal Island, Solomon Islands, with an ETA at 2100LT. While on approach by night, the four engine aircraft hit a mountain slope (2,000 feet high) located on the Florida Island, north of Honiara. The wreckage was spotted two days later, on July 28. Debris were found some 200 feet from the summit and all 27 occupants were killed.
Crew:
Hugh W. Prince, pilot,
Frederick F. Gundrum Jr., copilot,
Willard L. Churchill, flight engineer,
Eddie B. Hult, navigator,
J. Arthur Strumph, radio operator,
William A. Staley, traffic clerk.
Passengers:
Air Commodore Isaac John Fitch,
Lt Col John C. Pearson,
Maj R. R. Barton-Tates,
Lt Col Paul H. Berkowitz,
Lt Col Euliss L. Duggan,
Col Charles P. Burnett Jr.,
1st Lt Stephen J. Maliszewski,
2nd Lt William P. Foil,
Cpt Herbert R. Gore,
Cpt John S. Ingraham,
Maj Morton L. Talley Jr. 10
Source, photo and more info on
http://www.archaehistoria.org/index.php?option=com_content&view=article&id=123:site-flor5-aircraft-top-secret-cargo-consairway-c-87-liberator-express-41-11706&catid=21&Itemid=102

Crashed on approach to Lisbon Airport. Eight crew members were killed while six others were injured.

Shortly after take off, an engine exploded. The aircraft crashed near the runway end and was destroyed. No casualties.

On final approach, during the last segment, the captain decided to go around. The aircraft hit the runway surface, went out of control and came to rest into the sea. The aircraft was damaged beyond repair while there was no casualties.

The last radio contact with the crew was about three hours into the flight after departure from Keflavik. SAR operations were conducted southeast of Greenland but they were eventually suspended after few days as no trace of the aircraft nor the crew was found. All six crew members were employees of the Transcontinental & Western Air but were conducting this flight under the Air Transport Command. All passengers were US Army personnel flying back home.

Crashed on landing for unknown reason. No casualties.