Crash of a Lockheed P-3A-50-LO Orion off Cubi Point NAS: 1 killed

Date & Time: Dec 5, 1971 at 0710 LT
Type of aircraft:
Operator:
Registration:
152151
Flight Phase:
Survivors:
Yes
Schedule:
Cubi Point - Cubi Point
MSN:
185-5121
YOM:
1965
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
12
Pax fatalities:
Other fatalities:
Total fatalities:
1
Circumstances:
Shortly after takeoff from Cubi Point NAS, while in initial climb, both engines n°2 & 3 exploded. Both electric and hydraulic systems failed and the captain elected to ditch the airplane that crashed into the sea few dozen yards offshore. Fifteen occupants were rescued while Ensign Ed Cooper was killed.
Probable cause:
The airplane's water-alcohol injection system was accidentally serviced with water and cleaning solvent by the ground crew. This caused the turbine inlet temperature to increase immediately after liftoff.

Crash of a Boeing 707-321C in Manila: 4 killed

Date & Time: Jul 25, 1971 at 1321 LT
Type of aircraft:
Operator:
Registration:
N461PA
Flight Type:
Survivors:
No
Site:
Schedule:
San Francisco – Honolulu – Agana – Manille – Saigon
MSN:
19371/653
YOM:
1967
Flight number:
PA6005
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
4
Captain / Total flying hours:
17011
Captain / Total hours on type:
8248.00
Copilot / Total flying hours:
4577
Copilot / Total hours on type:
3277
Circumstances:
Flight 6005 was a scheduled international cargo flight from San Francisco to Saigon with intermediate stops at Honolulu, Guam and Manila. The flight from San Francisco to Honolulu and Guam was uneventful. At 2125 hours GMT on 24 July 1971, the flight took off from Guam for Manila. Initial contact with the flight was established by Manila Control at 2400 hours and the controller provided the flight with the latest weather information for Manila. At 0013 hours the flight reported having passed Jamalig one minute before, being at 67 DME and out of FL 200. It was then handed over by Manila Control to Manila approach control. The approach controller cleared the flight to BA and provided the crew with the following weather information: wind 280°/20 kts, visibility 7 kms, light rain, cloud 3/8 at 4 000 ft and 8/8 at 9 000 ft. At 0018 hours the flight was cleared for a VOR/DME approach to Runway 24 from the Bangbang Intersection and one minute later the flight reported commencing the approach. At 0021 hours the flight reported 22 DME out of 5 000 ft for 4 000 ft and 20 seconds later reaching 4 200 ft. This was acknowledged by the controller who, thereafter was unable to establish contact with the flight. It was subsequently found that at approximately 0023 hours the aircraft collided with Mt Kamunay some 20 miles ENE of the Manila VOR, at an altitude of 2 525 ft. Witnesses residing near the scene of the accident testified that they had heard the sound of an aircraft which ceased in an explosion, followed by two other explosions, one immediately thereafter and the second one a little later. The aircraft was totally destroyed and all four crew members were killed.
Probable cause:
The Board determined that the probable cause of the accident was improper crew coordination which resulted in the premature descent of the aircraft. The aircraft was nearly 1 000 ft below the minimum required altitude of 7 000 ft at 23 DPB and apparently flew one segment ahead of the approved descent procedure. This was due to misinterpretation by the pilot-in-command of the equivocal statements of the co-pilot regarding the position of the aircraft and the flight profile to be followed.
Final Report:

Crash of a Douglas C-47A-20-DK at Basa AFB: 40 killed

Date & Time: Apr 15, 1971 at 0700 LT
Operator:
Registration:
293246
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Basa - Nichols
MSN:
13136
YOM:
1944
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
36
Pax fatalities:
Other fatalities:
Total fatalities:
40
Circumstances:
Shortly after takeoff from Basa AFB (north of Floridablanca), while climbing to a height of 200 feet, the left engine failed. The aircraft banked left, stalled and crashed 800 meters past the runway end. The aircraft was totally destroyed and all 40 occupants were killed, among them 10 officers and 26 family members.
Probable cause:
Failure of the left engine during initial climb for unknown reason.

Crash of a Fokker F27 Friendship 200 in Dumaguete City

Date & Time: Jul 1, 1970
Type of aircraft:
Operator:
Registration:
PI-C504
Survivors:
Yes
MSN:
10209
YOM:
1962
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
26
Pax fatalities:
Other fatalities:
Total fatalities:
0
Aircraft flight hours:
19791
Aircraft flight cycles:
15966
Circumstances:
After touchdown, the airplane was unable to stop within the remaining distance. It overran, lost its undercarriage and came to rest with its right wing partially torn off. All 29 occupants escaped uninjured while the aircraft was damaged beyond repair.

Crash of a Fokker F27 Friendship 100 in Iligan: 1 killed

Date & Time: May 9, 1970
Type of aircraft:
Operator:
Registration:
PI-C532
Flight Phase:
Survivors:
Yes
Schedule:
Iligan - Manila
MSN:
10311
YOM:
1966
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
29
Pax fatalities:
Other fatalities:
Total fatalities:
1
Aircraft flight hours:
9646
Aircraft flight cycles:
9049
Circumstances:
The takeoff procedure from Iligan-Maria Christina Airport was attempted by zero visibility due to foggy conditions. For unknown reasons, the airplane was unable to rotate, overran and crashed on sandpile and rockspile. The copilot was killed while several passengers were injured. The aircraft was destroyed.

Crash of an Avro 748-2-209 in Cabanatuan: 36 killed

Date & Time: Apr 21, 1970 at 1130 LT
Type of aircraft:
Operator:
Registration:
PI-C1022
Flight Phase:
Survivors:
No
Schedule:
Cauayan - Manila
MSN:
1643
YOM:
1968
Flight number:
PR215
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
32
Pax fatalities:
Other fatalities:
Total fatalities:
36
Circumstances:
While cruising at an altitude of 10,500 feet, the airplane suffered an explosion. It went out of control, entered a dive and crashed in a field located near Cabanatuan. All 36 occupants have been killed.
Probable cause:
It was determined that an explosion occurred in the rear lavatory during flight. The exact cause of the explosion could not be established.

Crash of a BAc 111-402AP in Manila: 45 killed

Date & Time: Sep 12, 1969
Type of aircraft:
Operator:
Registration:
PI-C1131
Survivors:
Yes
Schedule:
Cebu City - Manila
MSN:
92
YOM:
1966
Flight number:
PR158
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
42
Pax fatalities:
Other fatalities:
Total fatalities:
45
Aircraft flight hours:
7208
Aircraft flight cycles:
6445
Circumstances:
On final approach to Manila Intl Airport, the crew failed to realize his altitude was too low when the airplane struck the ground and crashed in flames some 22 km from the runway 24 threshold. A crew member (steward) and a passenger were rescued while 45 other occupants were killed.

Crash of a Douglas DC-3A-191 in Manila

Date & Time: Apr 23, 1969
Type of aircraft:
Operator:
Registration:
PI-C947
Survivors:
Yes
Schedule:
Roxas City - Manila
MSN:
1909
YOM:
1937
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
28
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
After touchdown at Manila Airport, the crew encountered difficulties to stop within the remaining distance. The airplane overran, lost its undercarriage and came to a halt 75 meters farter. All 31 occupants escaped without injuries while the aircraft was damaged beyond repair.

Crash of a Fairchild F27 in Roscas

Date & Time: Apr 14, 1969
Type of aircraft:
Operator:
Registration:
PI-C870
Survivors:
Yes
MSN:
20
YOM:
1958
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
While landing at Roscas, near Manila, the airplane suffered a gear collapse. There were no injuries but the aircraft was damaged beyond repair.
Probable cause:
Gear collapsed on landing.

Crash of a Douglas C-47 on Mindanao Island: 19 killed

Date & Time: Feb 7, 1969
Operator:
Flight Phase:
Flight Type:
Survivors:
No
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
16
Pax fatalities:
Other fatalities:
Total fatalities:
19
Circumstances:
While completing a liaison flight, the airplane crashed in unknown circumstances somewhere on Mindanao Island. The wreckage was found a week later in the jungle and all 19 occupants were killed.