California

The four engine Navy hospital plane was performing a flight from the Moffett AFB located near San Jose, California, to Oakland NAS with 14 patients and a crew of seven on board. The approach to Oakland NAS was completed in low visibility due to foggy conditions, via a GCA guidance system. On final, the aircraft was too low and hit an embankment. On impact, the undercarriage were sheared off, the aircraft crash landed, skidded for about 1,000 feet and came to rest in flames. A passenger was killed while 20 other occupants were injured. The aircraft was destroyed.

The crew was involved in a maritime patrol flight. Enroute, the crew informed ground that an engine caught fire and elected to return for an emergency landing. On final approach, at an altitude of 200 feet, the aircraft went out of control and crashed one mile short of runway. Five crew members were killed with two others were seriously injured.

While cruising at the altitude of 7,000 feet, the crew informed ATC he just overflew Mt Laguna and then reduced his altitude when the aircraft, at a height of 6,120 feet, hit the east slope of Mt Cuyapaipe. The aircraft was destroyed by impact forces and a post crash fire, and all 12 occupants were killed. The wreckage was found 75 feet below the summit.
Photos: Craig Fuller and Brad Gray.
http://www.AviationArchaeology.com

The four engine aircraft landed on a wet runway. After touchdown, it was unable to stop within the remaining distance, overran and came to rest 200 feet further on. All 45 occupants were uninjured and quickly disembarked while the aircraft was considered as damaged beyond repair due to severe damages to the fuselage.

At 0324LT, the crew informed ATC about his position at 9,000 feet vertical to Newhall and six minutes later, he obtained the permission to descend. At 0341LT, the aircraft hit the slope of Mt White located 14 miles south of Lebec and disintegrated on impact. All 11 occupants were killed. It appears that at the time of the accident, the aircraft was off track to the east by ten miles due to strong west winds, and it hit the mountain 75 feet below the summit.

Crashed in unknown circumstances into the Pacific Ocean off Point Arena, killing all six crew members who were returning to their base following a maritime patrol mission.
Crew:
Lt Jg W. Bulter,
Ems C. L. Coler,
Amm1 G. R. Spalding,
Amm1 W. W. Englehardt,
Arm1 T. M. Meleller,
Aom1 W. Zinkel.

Aircraft took off from Clovis Army Air Field in New Mexico, bound for Hamilton AAF in Marin County. The plane stopped at Mines Field in Los Angeles, refueled, retook to the skies at 2317LT and was due to arrive at Hamilton at 0117LT in the morning, but the pilot, according to the Army investigation, lost his way while trying to locate Hamilton Field. At around 0200LT in the morning, and five minutes from its destination, the pilot radioed Hamilton Field for radar assistance in landing. But, shortly after 0200LT, the engines of the bomber, starved of fuel, quit, and the bomber smashed into a 1300-foot peak of White's Hill, some nine miles short of the airfield. Striking the hill only six feet below its top, the plane bounced over the top, thudded across the rough terrain, and slid to a grinding halt that churned up earth and rock for more than 100 yards, and scattering wreckage for 300 yards. Dazed, confounded, and startled by the crash, the pilot and co-pilot extricated themselves out of the wreckage of his once-proud aircraft. Still trapped in the wreckage were five of their crew. Stumbling and clawing their way through the morning darkness towards the city lights they saw in the distant, they reached a retirement home, from which they alerted the airfield. Killed instantly in the First Lieutenant Milton M. Souza, 25, of Santa Clara. CA. and Master Sergeant E. B. Nichols, of Clovis, NM. Rescuers chopped a hole through the wreckage with an axe to extricate a Lieutenant Colonel from the fuselage. He was then strapped on a litter with his parachute shrouds and brought down the hillside. It took a total of six hours to free the five trapped men from the plane, two of whom were seriously injured.
Source:
http://www.check-six.com/Crash_Sites/Marin_B-17_crash.htm

The crew was conducting a test flight after the left engine has been replaced. Few minutes after takeoff, a failure occurred on the 8th cylinder in the left engine and the crew shut off this engine and returned to Hollywood-Lockheed Air Terminal Airport. Due to low visibility caused by foggy conditions, the crew was unable to locate the runway and decided to go around. During the second attempt to land, the captain decided to reduce his altitude to establish a visual contact with the ground when the aircraft hit an eucalyptus and crashed near Lorne Street, North Hollywood. The aircraft was destroyed by impact forces and a post crash fire and all three crew members were killed.

After takeoff from Oakland Airport, while climbing, the crew was instructed by ATC to maintain a minimum safe altitude of 3,000 feet or at least 500 feet above clouds. Shortly later, due to the deterioration of the weather conditions, the captain informed ground that he elected to return to Oakland Airfield. While completing a last turn to the right at an insufficient altitude, the twin engine aircraft hit tree tops then crashed in a wooded area located on the slope of Mt Diablo located east of Walnut Creek. The aircraft was destroyed by impact forces and both occupants were killed. At the time of the accident, the mountain was shrouded by clouds and the visibility was poor.