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Crash of a Lockheed P-3C-150-LO Orion in the Pacific Ocean: 14 killed

Date & Time: Mar 21, 1991 at 0215 LT
Type of aircraft:
Operator:
Registration:
158930
Flight Phase:
Survivors:
No
Schedule:
Moffett - Moffett
MSN:
185-5602
YOM:
1973
Country:
Region:
Crew on board:
14
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
14
Circumstances:
The aircraft departed Moffett AFB on a combined survey mission over the Pacific Ocean with a second USN Orion registered 159325 carrying a crew of 13. While cruising at an altitude of 3,000 feet in marginal weather conditions, both aircraft collided and crashed in the sea. Few debris were found floating on water about 60 miles southwest of San Diego and all 27 crew members were missing and never recovered.
Probable cause:
Due to lack of evidences, the exact cause of the collision could not be determined with certainty. However, it was reported that both crews were dispatched to perform this mission while they were tired due to a long period of duty. At the time of the accident, weather conditions were marginal as partly cloudy at 2,000 feet over water, local thunderstorm activity and rain showers. Both crews committed negligences while cruising in formation and failed to pay attention to the exact position of the second aircraft. Also, it was reported that the crew of 159325 failed to follow the assigned heading for unknown reasons.

Crash of a Lockheed P-3C-150-LO Orion in the Pacific Ocean: 13 killed

Date & Time: Mar 21, 1991 at 0215 LT
Type of aircraft:
Operator:
Registration:
159325
Flight Phase:
Survivors:
No
Schedule:
Moffett - Moffett
MSN:
185-5615
YOM:
1974
Country:
Region:
Crew on board:
13
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
13
Circumstances:
The aircraft departed Moffett AFB on a combined survey mission over the Pacific Ocean with a second USN Orion registered 158930 carrying a crew of 14. While cruising at an altitude of 3,000 feet in marginal weather conditions, both aircraft collided and crashed in the sea. Few debris were found floating on water about 60 miles southwest of San Diego and all 27 crew members were missing and never recovered.
Probable cause:
Due to lack of evidences, the exact cause of the collision could not be determined with certainty. However, it was reported that both crews were dispatched to perform this mission while they were tired due to a long period of duty. At the time of the accident, weather conditions were marginal as partly cloudy at 2,000 feet over water, local thunderstorm activity and rain showers. Both crews committed negligences while cruising in formation and failed to pay attention to the exact position of the second aircraft. Also, it was reported that the crew of 159325 failed to follow the assigned heading for unknown reasons.

Crash of a Lockheed P-3C-125-LO Orion at Moffett AFB: 5 killed

Date & Time: Apr 12, 1973 at 1450 LT
Type of aircraft:
Operator:
Registration:
157332
Flight Type:
Survivors:
Yes
Schedule:
Moffett - Moffett
MSN:
185-5547
YOM:
1970
Crew on board:
6
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
5
Circumstances:
The aircraft was engaged in a local training flight with a crew of six on board. At a same time was approaching to Moffett AFB a NASA Convair CV-990-30A-5 registered N711NA that was returning to Moffett following a test flight over the Monterey Bay with eight scientists and a crew of three on board. Following an uneventful mission, the crew of the Convair started the approach and was cleared to land on runway 32R while seven miles out. After been cleared, the Orion's crew informed ATC he was joining the runway 32L approach path when the controller cleared the crew of the Convair to land at runway 32L. Shortly later, at an altitude of about 300 feet, the nose gear of the Convair struck the top of the Orion's tail. Both airplanes went out of control and crashed in flames on the Sunnyvale golf course located about 0,3 mile short of runway threshold. A crew member from the Orion was seriously injured while all 16 other occupants on both aircraft were killed.
Probable cause:
It was determined that the collision was the consequence of several errors on part of the approach controller. He firstly cleared the Convair's crew to land on runway 32R and the Orion's crew to land on runway 32L. But during the approach, after the Orion's crew confirmed he was joining the runway 32L approach path, the controller cleared the crew of the Convair to land on the same runway 32L. For reasons undetermined, the Convair's crew did not ask any question about this runway change. Also, none of the crew was able to see and avoid each other.

Crash of a Convair CV-990-30A-5 at Moffett AFB: 11 killed

Date & Time: Apr 12, 1973 at 1450 LT
Type of aircraft:
Operator:
Registration:
N711NA
Flight Type:
Survivors:
No
Schedule:
Moffett - Moffett
MSN:
30-10-1
YOM:
1961
Crew on board:
3
Crew fatalities:
Pax on board:
8
Pax fatalities:
Other fatalities:
Total fatalities:
11
Circumstances:
The aircraft was engaged in a local test flight at Moffett Airbase, carrying three crew members and eight NASA scientists in charge to test a survey equipment over the Monterey Bay. Following an uneventful mission, the crew started the approach and was cleared to land on runway 32R while seven miles out. In the region was also operated a US Navy Lockheed P-3C-125-LO Orion registered 157332 and that was completing a local training flight with a crew of six on board. After been cleared, the Orion's crew informed ATC he was joining the runway 32L approach path when the controller cleared the crew of the Convair to land at runway 32L. Shortly later, at an altitude of about 300 feet, the nose gear of the Convair struck the top of the Orion's tail. Both airplanes went out of control and crashed in flames on the Sunnyvale golf course located about 0,3 mile short of runway threshold. A crew member from the Orion was seriously injured while all 16 other occupants on both aircraft were killed.
Probable cause:
It was determined that the collision was the consequence of several errors on part of the approach controller. He firstly cleared the Convair's crew to land on runway 32R and the Orion's crew to land on runway 32L. But during the approach, after the Orion's crew confirmed he was joining the runway 32L approach path, the controller cleared the crew of the Convair to land on the same runway 32L. For reasons undetermined, the Convair's crew did not ask any question about this runway change. Also, none of the crew was able to sea and avoid each other.

Crash of a Lockheed P-3A-50-LO Orion into the Pacific Ocean: 8 killed

Date & Time: May 26, 1972
Type of aircraft:
Operator:
Registration:
152155
Flight Phase:
Survivors:
No
Schedule:
Moffett - Moffett
MSN:
185-5125
YOM:
1965
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
8
Circumstances:
While engaged in a maritime patrol flight over the Pacific Ocean, the airplane crashed in unknown circumstances. No trace of the aircraft nor the eight occupants was found.

Crash of a Lockheed P-3B-95-LO Orion at Moffett AFB

Date & Time: Apr 11, 1968
Type of aircraft:
Operator:
Registration:
A9-296
Flight Type:
Survivors:
Yes
Schedule:
Moffett - Moffett
MSN:
5406
YOM:
1968
Crew on board:
4
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew was completing a local test flight on this new aircraft which should be delivered to the Royal Australian Air Force. Upon landing, one of the main landing gear collapsed and the airplane came to rest in flames. While all four crew members escaped uninjured, the aircraft was destroyed by fire.
Probable cause:
Undercarriage collapsed upon landing.

Crash of a Lockheed P-3A-55-LO Orion into the Pacific Ocean: 11 killed

Date & Time: Apr 9, 1966 at 1925 LT
Type of aircraft:
Operator:
Registration:
152171
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Moffett - Moffett
MSN:
5141
YOM:
1965
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
7
Pax fatalities:
Other fatalities:
Total fatalities:
11
Circumstances:
The airplane was engaged in an anti-submarine exercise when control was lost. It crashed into the Pacific Ocean about 187 miles off San Diego. The aircraft was destroyed and all 11 occupants were killed.
Probable cause:
Loss of control caused by the disengagement of the autopilot in flight for undetermined reason.

Crash of a Lockheed R7V-1 Super Constellation near Taft: 5 killed

Date & Time: May 14, 1958
Operator:
Registration:
131652
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
Ontario - Moffett
MSN:
4153
YOM:
1954
Location:
Crew on board:
5
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
5
Circumstances:
En route from Ontario (California) to Moffett AFB, the crew decided to perform five consecutive stalls. Doing so, the airplane lost 3,000 feet and suffered severe vibrations that caused structural damages to skin, stringers and bulkheads in the aft portions of the fuselage. The pilot requested permission to divert to Taft Airport for an emergency landing but shortly later, the airplane disintegrated in the air and crashed in a mountainous area located 7 miles east of Taft. The aircraft was totally destroyed and all five crew members were killed.
Probable cause:
In-flight structural failure of the airframe.

Crash of a Douglas R4D-6 near Santa Monica: 7 killed

Date & Time: Jun 13, 1949
Operator:
Registration:
17279
Flight Type:
Survivors:
No
Schedule:
Moffett - Santa Monica
MSN:
14479/25924
YOM:
1944
Crew on board:
7
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
7
Circumstances:
On approach to Santa Monica-Clover Field, the twin engine aircraft hit the slope of a mountain located in the Dry Canyon, some 5 miles north of the airport. All seven crew members were killed.

Crash of a Douglas R5D in Oakland NAS: 1 killed

Date & Time: Jan 20, 1947
Type of aircraft:
Operator:
Flight Type:
Survivors:
Yes
Schedule:
Moffett - Oakland
Crew on board:
7
Crew fatalities:
Pax on board:
14
Pax fatalities:
Other fatalities:
Total fatalities:
1
Circumstances:
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.
Probable cause:
Too low approach in foggy conditions.