Military

En route, the twin engine aircraft hit a mountain located 4 miles east of Oakland, killing all nine crew members.

The aircraft left Rabaul-Vunakanau Airport in early morning bound for Balalae Island with an intermediate stop in Lakunai to pick up passengers. The twin engine aircraft was flying together with another Mitsubishi G4M and an escort of six Mitsubishi Zero. It left Lakunai Airfield at 0610LT and while approaching the south of the Bougainville Island, the formation was attacked by a squadron of 12 USAAF P-38. The G4M was shot down and crashed in a jungle located some 25 km north of Buin, killing all 12 occupants, among them Admiral Isoroku Yamamoto and several high rank Navy Officers who were performing an inspection of the Japanese installations in the area of the Solomon Islands.
Crew (705th Kōkūtai):
W/O Takeo Koyani, pilot,
W/O Takeo Kotani, pilot,
F/S Akiharu Ozaki, copilot,
P/O Haruo Ueda, flight engineer,
P/O Nobuo Hara, radio operator,
P/O Minoru Tanaka, air gunner,
F/S Mitsuo Ueno, air gunner,
F/S Harumasa Kobayashi, air gunner.
Passengers:
Admiral Isoroku Yamamoto,
Admiral Takata,
Cdr Kurio Toibana,
Cdr Noburu Fukusaki.

The aircraft left Rabaul-Vunakanau Airport in early morning bound for Balalae Island with an intermediate stop in Lakunai to pick up passengers. The twin engine aircraft was flying together with another Mitsubishi G4M and an escort of six Mitsubishi Zero. It left Lakunai Airfield at 0610LT and while approaching the south of the Bougainville Island, the formation was attacked by a squadron of 12 USAAF P-38. The G4M was shot down and crashed into the sea off Moila Point, some 15 km southwest of Buin. Two passengers and the captain were found alive while all other occupants were killed, among them several high rank Navy Officers who were performing an inspection of the Japanese installations in the area of the Solomon Islands and were accompanying Admiral Isoroku Yamamoto.
Crew (705th Kōkūtai):
F/O Hiroshi Hayashi, pilot,
Cdr Hiroaki Tanimura 6.
Passengers:
Vice-Admiral Matome Ugaki,
Cpt Motoharu Kitamura,
Cdr Rinji Tomoro,
Cdr Kaoru Imananka,
Cdr Suteji Muroi.

En route, the twin engine aircraft disappeared. No trace of it nor the crew was ever found. It is believed that the aircraft crashed in the Burragorang Valley, and could possibly be submerged under the waters of Warragamba Dam.
Crew (34th Squadron):
Sgt Douglas Brian Doyle, pilot,
F/O Geoffrey Hugh Lester,
Sgt Francis Joseph Doyle,
Lt Umstead,
Lt Teague.
Source: http://www.adf-gallery.com.au/

Crash in unknown circumstances at Wadi Seidna AFB, north of Khartoum. The crew fate remains unknown.

On touchdown, the aircraft went out of control, veered off runway and came to rest in flames. As all seven crew members were unhurt while the aircraft was destroyed.

While in cruising flight, the aircraft caught fire for unknown reason. Five passengers were able to bail out before the aircraft dove into the ground and crashed in a field, killing seven other occupants.

Crashed on take off. Crew fate remains unknown.

In unknown circumstances, the four-engine aircraft crashed in a field near the RAF Donibristle. A passenger was seriously injured while seven other occupants were killed.

Following an uneventful mission, the crew was returning to his base in the UK. En route, a fuel exhaustion forced all 10 crew members to abandon the aircraft and to bail out. While the aircraft crashed in a field and was destroyed, all 10 occupants were unhurt.