Crash of a Douglas C-47-DL off Shelter Cove: 17 killed

Date & Time: Jun 27, 1971 at 1800 LT
Registration:
N90627
Flight Phase:
Survivors:
Yes
Schedule:
Shelter Cove – San Jose
MSN:
4642
YOM:
1942
Crew on board:
3
Crew fatalities:
Pax on board:
21
Pax fatalities:
Other fatalities:
Total fatalities:
17
Captain / Total flying hours:
12000
Circumstances:
After liftoff at Shelter Cove Airport, the airplane encountered difficulties to gain height. The undercarriage struck an electric transformer and the left engine struck the roof of a sewage disposal building. Shortly later, the airplane entered a left bank and crashed into the sea about 150 yards offshore. Both pilots and 15 passengers were killed while seven other occupants were seriously injured. The aircraft was destroyed.
Probable cause:
Inadequate preflight preparation on part of the flying crew who failed to remove the rudder and elevator control locks prior to takeoff.
Final Report:

Crash of a Douglas DC-9-31 near Duarte: 49 killed

Date & Time: Jun 6, 1971 at 1711 LT
Type of aircraft:
Operator:
Registration:
N9345
Flight Phase:
Survivors:
No
Site:
Schedule:
Los Angeles – Salt Lake City – Boise – Lewiston – Pasco – Yakima – Seattle
MSN:
47441/503
YOM:
1969
Flight number:
RW706
Crew on board:
5
Crew fatalities:
Pax on board:
44
Pax fatalities:
Other fatalities:
Total fatalities:
49
Captain / Total flying hours:
15490
Captain / Total hours on type:
2562.00
Copilot / Total flying hours:
17128
Copilot / Total hours on type:
272
Aircraft flight hours:
5542
Circumstances:
Airwest flight 706, a DC-9, was to fly from Los Angeles, CA (LAX) to Seattle, WA (SEA) with intermediate stops at Salt Lake City (SLC), Boise (BOI), Lewiston (LWS), Pasco (PSC) and Yakima (YKM). The aircraft departed Los Angeles at 18:02. At 18:09 the crew reported leaving FL120 and Los Angeles ARTCC cleared them direct to Daggett. At 17:16 h a US Marine Corps McDonnell F-4B Phantom 151458 departed Naval Auxiliary Air Station (NAAS) Fallon for a flight to MCAS El Toro at low altitude. The aircraft had several technical difficulties, including an inoperative transponder and a leak in the oxygen system. Due to deteriorating visibility northwest of Palmdale, the crew climbed to 15,500 feet . Shortly after level-off, aircraft was 50 miles from MCAS El Toro. The pilot executed a 360° aileron roll at this time, which took approximately 3 seconds to complete. The Radar Intercept Officer (RIO) estimated that the true airspeed in the climb and after level-off was 420 knots. The F-4B collided with the Airwest DC-9 about 1 minute and 20 sec after the roll, at 15150 feet. After the collision, the F-4 began to tumble violently about the lateral axis. The RIO waited about 5 seconds, and, after seeing numerous warning lights in the cockpit, he ejected from the aircraft . The ejection was successful, and he parachuted to the ground without injury. The other F-4 crewmember did not survive the accident.
Probable cause:
The failure of both crews to see and avoid each other but it is recognized that they had only marginal capability to detect, assess, and avoid the collision. Other causal factors include a very high closure rate, comingling of IFR and VFR traffic in an area where the limitation of the ATC system precludes effective separation of such traffic, and failure of the crew of 151458 to request radar advisory service, particularly considering the fact that they had an inoperable transponder.
Final Report:

Crash of a Boeing 720-047B in Ontario: 5 killed

Date & Time: Mar 31, 1971 at 0633 LT
Type of aircraft:
Operator:
Registration:
N3166
Flight Type:
Survivors:
No
Schedule:
Los Angeles - Ontario
MSN:
19439/621
YOM:
1966
Flight number:
WA366
Crew on board:
5
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
5
Captain / Total flying hours:
19714
Captain / Total hours on type:
3780.00
Copilot / Total flying hours:
15767
Copilot / Total hours on type:
3840
Aircraft flight hours:
11521
Aircraft flight cycles:
7011
Circumstances:
The crew was completing a training flight from Los Angeles to Ontario. The pilot under supervision was supposed to complete an ILS approach with one engine inoperative, to make a missed approach and a go-around procedure. On final to runway 25R, the airplane went out of control and crashed in a field. The airplane was totally destroyed and all five crew members were killed.
Probable cause:
The failure of the aircraft rudder hydraulic actuator support fitting. The failure of the fitting resulted in the inapparent loss of left rudder control which, under the conditions of the flight, precluded the pilots’ ability to maintain directional control during a simulated engine-out missed-approach. The existing weather conditions degraded external visual cues, thereby hampering rapid assessment of aircraft performance by the flight check captain.
Final Report:

Crash of a Rockwell Aero Commander 560 in Helendale: 2 killed

Date & Time: Mar 19, 1971 at 1145 LT
Registration:
N2727B
Flight Type:
Survivors:
No
Schedule:
Van Nuys – Helendale
MSN:
560-227
YOM:
1955
Crew on board:
1
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
2
Captain / Total flying hours:
400
Captain / Total hours on type:
4.00
Circumstances:
While on approach to Helendale Airport, the twin engine aircraft speed was too low. The left wing dropped and the airplane dove into the ground and crashed in flames. Both occupants were killed. They were completing an electrical chute device drop test from Van Nuys Airport.
Probable cause:
The pilot-in-command failed to maintain flying speed. The following factors were reported:
- Lack of familiarity with aircraft.
Final Report:

Crash of a Beechcraft C-45H Expeditor in Lakeside

Date & Time: Feb 14, 1971 at 1405 LT
Type of aircraft:
Registration:
N4709C
Flight Phase:
Survivors:
Yes
Schedule:
Lakeside - Lakeside
MSN:
AF-819
YOM:
1954
Crew on board:
1
Crew fatalities:
Pax on board:
10
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
2075
Captain / Total hours on type:
251.00
Circumstances:
The aircraft was engaged in a local skydiving mission, carrying 10 skydivers and one pilot. Following a roll of about 900 feet, the pilot started the rotation. At a speed of 75 mph, the airplane lifted off then stalled and struck the ground. Out of control, it veered off runway and came to rest in flames. All 11 occupants were rescued, one passenger was seriously injured. The aircraft was destroyed.
Probable cause:
Premature lift-off on part of the pilot who failed to obtain/maintain flying speed.
Final Report:

Crash of a Beechcraft C-45H Expeditor off San Francisco

Date & Time: Nov 2, 1970 at 1010 LT
Type of aircraft:
Operator:
Registration:
N6654R
Survivors:
Yes
Schedule:
San José – San Francisco
MSN:
AF-485
YOM:
1953
Crew on board:
2
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
14000
Captain / Total hours on type:
3300.00
Circumstances:
While approaching San Francisco Airport in foggy conditions, the crew reduced his altitude and passed below the minimum descent altitude when the twin engine airplane struck the water surface and crashed into the San Francisco Bay, few hundred yards off shore. All four occupants were injured and rescued while the aircraft sank and was lost. At the time of the accident, the visibility was reduced due to fog.
Probable cause:
Improper IFR operation on part of the crew who failed to follow the approved procedures. The following factors were reported:
- Low ceiling and fog,
- Inadequate preflight preparation,
- Weather considerably worse than forecast,
- Descended below MDA,
- Procedure requested identification of approach or runway lights not in effect by operator.
Final Report:

Crash of a Lockheed KC-130F Hercules at El Toro AFB: 1 killed

Date & Time: Jul 30, 1970
Type of aircraft:
Operator:
Registration:
150685
Flight Type:
Survivors:
Yes
MSN:
3728
YOM:
1962
Crew on board:
5
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
1
Circumstances:
After touchdown at El Toro AFB, the airplane went out of control, veered off runway and came to rest in flames on the apron, less than 50 yards from 'Air Force One'. A crew member was killed while four others were injured.

Crash of a Consolidated PBY-6A Catalina in Columbia: 2 killed

Date & Time: Jul 18, 1970 at 1600 LT
Type of aircraft:
Operator:
Registration:
N6459C
Flight Type:
Survivors:
No
Schedule:
Columbia - Columbia
MSN:
2017
YOM:
1943
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
2
Captain / Total flying hours:
13532
Captain / Total hours on type:
1202.00
Circumstances:
Following a firefighting mission, the crew was returning to Columbia Airport when, on final approach, the airplane was too low and struck a rocky wall located about 252 feet short of runway threshold. The airplane crashed and was destroyed. Both crew members were killed.
Probable cause:
The crew misjudged the distance, speed and altitude on final approach, causing the aircraft to struck the ground and to crash. The following contributing factors were reported:
- Downwind,
- High temperature,
- Terrain,
- The crew made a 360 turn at low altitude,
- Hit granite boulders 252 feet short of runway, five feet below the runway.
Final Report:

Crash of a Lockheed C-5A Galaxy at Palmdale AFB

Date & Time: May 25, 1970
Type of aircraft:
Operator:
Registration:
67-0172
Flight Phase:
Flight Type:
Survivors:
Yes
MSN:
500-0011
YOM:
1970
Crew on board:
5
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
While taxiing at Palmdale AFB, the airplane caught fire. The crew immediately stopped then airplane on the taxiway and was able to evacuated the cabin. The aircraft was totally destroyed after 45 minutes of an intense fire. The cause remains unknown.

Crash of an Aero Spacelines 377MGT Mini Guppy at Edwards AFB: 4 killed

Date & Time: May 12, 1970 at 0719 LT
Operator:
Registration:
N111AS
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Edwards - Edwards
MSN:
0001
YOM:
1970
Crew on board:
4
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
4
Captain / Total flying hours:
6827
Captain / Total hours on type:
34.00
Circumstances:
The Aero Spacelines 377MGT was a converted Boeing Stratoliner. Prototype N111AS first flew on March 13, 1970. In the following period flight testing was carried out, a.o. at Edwards AFB. The accident occurred during the sixth takeoff of Flight Number 12 following the scheduled shutdown of the engine number one at about 109 knots IAS. The takeoff was being made on runway 22 and the wind was from approximately 200 degrees at about 10 knots. Rotation occurred at about 114 knots and several seconds after rotation, according to one witness, the aircraft turned and rolled to the left, settling as it did so. The left wingtip subsequently contacted the ground, causing a severe yaw. The forward fuselage struck the ground, causing the flight deck to be destroyed. The test flight was under FAR Part 25 certification program.
Source: http://www.allaboutguppys.com
Probable cause:
The exact cause of the accident could not be determined. However, examination of the Rudder System revealed the the Rudder Bell Crank Arm Assembly, Boeing P/N 15-23765 and the Rudder Boost Control Link Assembly, Boeing P/N 6-38900 were broken. The broken assemblies were removed and forwarded to the NTSB Metallurgist for fracture analysis. The fractures were typical of bending overload breaks.
Final Report: