Japan

The aircraft had been taking reconnaissance photos over the Yalu River at the China/Korean border. The plane was attacked by two Soviet MiG-15's (Maj A. Z. Bordun and St/Lt L. M. Dimchenko) and was severely damaged. Two of the engines on the left side had been shot up and were no longer operating. The crew managed to creep home to Johnson AFB (Iruma AFB). Upon their final approach for a crash landing the nose of the aircraft suddenly dove into the ground. Upon crashing, the plane split in half and the wings crashed over the front section, killing all but one occupant of the cockpit. The lone survivor from the cockpit was Harry Lavene who had been the tail gunner. While being attacked, military records shows that he was the first enlisted man to shoot down a MiG-15 from a B-29.
Source:
http://www.joebaugher.com/usaf_serials/1944_4.html

Crashed on takeoff for unknown reason. Occupant fate remains unknown.

The heavy bomber left Kadena AFB for the Korea War theater. Shortly after takeoff, while climbing, the engine number one developed trouble and the aircraft was too heavy to return immediately to Kadena for a safe landing. The crew decided to jettison some of the bombs stored in the bomb bay to light the aircraft. Although the bombs were dropped in a safe condition, some of them exploded while impacting the sea. Fragments severely damaged the airplane to the extent that it was necessary to ditch in the sea about five miles from the end of the runway. Eight crew members were killed while three others were injured.

Crashed on final approach to Ashiya Airbase. Three crew members were killed while five other occupants were injured. The aircraft was completing a flight from Korea.

Few minutes after takeoff from Ashiya AFB, en route to the Korea War theater, the aircraft suffered an engine fire. The crew abandoned the aircraft and bailed out. All crew members were rescued while the aircraft crashed into the sea about 16 km west of the Wakamatsu district.

Crashed on takeoff. Crew fate unknown.

Shortly after takeoff, while in initial climb, an engine failed. The captain ordered his crew to bail out and tried an emergency landing when the aircraft crashed in flames onto a house located about 8 km northwest of the airbase. The three crew members who bailed out were uninjured while the pilot was killed and also three people in the house.

Less than five minutes after takeoff from Tokyo-Haneda Airport, while in initial climb, the four engine aircraft went out of control and crashed into the Tokyo Bay, about 14,5 km southeast of the airport. A crew member was killed while ten others were rescued. The airplane was on its way to Kadena AFB, Okinawa.

After touchdown in Iwakuni AFB, the aircraft went out of control and veered off runway to the right. While contacting soft ground, the undercarriage were sheared off and the aircraft slid for several yards before coming to rest with its left wing crumpled. There were no casualties but the aircraft was damaged beyond repair.

Shortly after takeoff from runway 30 at Ashiya AFB, while in initial climb, the four engine aircraft stalled and crashed into the sea some 1,500 meters off shore. Eighteen passengers and five crew members were killed while 28 other occupants were rescued. The exact cause of the occurrence remains unknown. The airplane was on its way to Seoul-Kimpo, carrying 43 soldiers to the Korean War theater.