On July 12, 1953, Transocean Air Lines Flight 512, a

Douglas DC-6A The Douglas DC-6 is a piston-powered airliner and cargo aircraft built by the Douglas Aircraft Company from 1946 to 1958. Originally intended as a military transport near the end of World War II, it was reworked after the war to compete with th ...

operated by Transocean Air Lines from

Guam Guam (; ch, Guåhan ) is an organized, unincorporated territory of the United States in the Micronesia subregion of the western Pacific Ocean. It is the westernmost point and territory of the United States (reckoned from the geographic cent ...

Oakland, California Oakland is the largest city and the county seat of Alameda County, California, United States. A major West Coast of the United States, West Coast port, Oakland is the largest city in the East Bay region of the San Francisco Bay Area, the third ...

, crashed into the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...

roughly east of

Wake Island Wake Island ( mh, Ānen Kio, translation=island of the kio flower; also known as Wake Atoll) is a coral atoll in the western Pacific Ocean in the northeastern area of the Micronesia subregion, east of Guam, west of Honolulu, southeast of To ...

while en route to

Honolulu Honolulu (; ) is the capital and largest city of the U.S. state of Hawaii, which is in the Pacific Ocean. It is an unincorporated county seat of the consolidated City and County of Honolulu, situated along the southeast coast of the island ...

for a planned stopover. All 58 passengers and crew on board were killed.

Crash

On July 12, Flight 512 was scheduled to fly from

Oakland Oakland is the largest city and the county seat of Alameda County, California, United States. A major West Coast port, Oakland is the largest city in the East Bay region of the San Francisco Bay Area, the third largest city overall in the Bay A ...

, California, stopping at Wake Island and Honolulu. The aircraft departed Guam at 00:04 GMT and arrived at Wake Island at 05:39 without incident. After boarding one additional passenger, Flight 512 departed at 06:58 for an estimated nine-hour flight. The aircraft radioed a 100-nautical-mile position report at 07:29, and another scheduled position report at 08:29 (). When Flight 512 missed its next scheduled position report, an alert was issued by Wake Island at 10:01. An incoming aircraft reported seeing a green flare en route from Honolulu at approximately 08:41. A preliminary accident notice was filed at 16:43. Within 24 hours, a complete listing of the aircraft's passenger and crew manifest was published in a California newspaper. The United States Navy dispatched 19 ships from

Pearl Harbor Pearl Harbor is an American lagoon harbor on the island of Oahu, Hawaii, west of Honolulu. It was often visited by the Naval fleet of the United States, before it was acquired from the Hawaiian Kingdom by the U.S. with the signing of the Re ...

, including the USS ''Epperson'' and USS ''Walker'', along with 12 US Navy P2V Neptunes. On July 13, 1953, at 06:08, the USNS ''Barrett'' reported debris and an empty inflated life raft from Flight 512 at . Additional search support was summoned to the area. At 20:44 the ''Barrett'' reported discovering bodies in the water at and eventually 14 bodies were recovered. Eleven additional bodies were spotted but could not be recovered due to rough seas and the presence of sharks. The search was ended at 00:00 on 15 July 1953.

Investigation

Mechanical /structural failure

The fuselage was not recovered; therefore conclusions about mechanical or structural failure cannot be made. The aircraft had received regular maintenance and servicing, and there were no complaints of mechanical difficulty. Based on the recovered bodies and debris, there was no evidence of fire in flight and impact occurred with great force. Maintenance and inspection records were unremarkable.

Fuel loading

The Douglas DC-6A’s design provides for the storage of fuel in the wings of the aircraft. Precise sequences for fuel loading were established by the manufacturer so as not to exceed design limitations and place excess stress on the airframe. It was determined that the fuel was properly loaded in Guam.

Weather

Another commercial aircraft flying approximately 30 miles north of the scheduled route for Flight 512 reported “an extensive thunderstorm area accompanied by heavy turbulence was encountered.” The weather briefing provided to Flight 512 prior to departure did not indicate any significant turbulence.

Sabotage

Sabotage was considered and ruled out.

Probable cause

Given the lack of physical evidence, The Civil Aeronautics Safety Bureau was unable to determine probable cause.

Notes

References

Bibliography

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