Crash of a NAMC YS-11-102 in Jakarta

Date & Time: Apr 1, 1971
Type of aircraft:
Operator:
Registration:
PK-MYN
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Jakarta - Jakarta
MSN:
2011
YOM:
1965
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew was engaged in a local training mission at Jakarta-Kemayoran Airport. After completing several touch-and-go manoeuvres with one engine voluntarily inoperative, the pilot-in-command made a new landing successfully. After rotation, during initial climb, the airplane stalled and crashed in a gear-up and flaps-down configuration onto the runway before coming to rest. All three crew members were injured and the aircraft was damaged beyond repair.

Crash of a Short SC.7 Skyvan 3M Variant 400 off Biak: 8 killed

Date & Time: Feb 1, 1971
Type of aircraft:
Operator:
Registration:
T-701
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Biak - Biak
MSN:
1871
YOM:
1969
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
6
Pax fatalities:
Other fatalities:
Total fatalities:
8
Circumstances:
The airplane was engaged in a night training mission, carrying six passengers and two pilots. In unknown circumstances, the twin engine airplane crashed into the sea off Biak. All eight occupants were killed.

Crash of a Beechcraft B80 Queen Air in Indonesia

Date & Time: Dec 15, 1970
Type of aircraft:
Registration:
PK-LEB
Flight Phase:
Survivors:
Yes
MSN:
LD-356
YOM:
1967
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Crashed following an engine failure at takeoff somewhere in Indonesia. There were no casualties but the aircraft was written off.
Probable cause:
Engine failure at takeoff.

Crash of a Douglas C-47A-80-DL in Manado

Date & Time: Jun 4, 1970
Operator:
Registration:
PK-ZDF
Flight Type:
Survivors:
Yes
MSN:
19648
YOM:
1944
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Crashed in unknown circumstances near the Manado-Sam Ratulangi Airport. There were no casualties.

Crash of a Convair CV-990-30A-5 near Bombay: 30 killed

Date & Time: May 28, 1968 at 0244 LT
Type of aircraft:
Operator:
Registration:
PK-GJA
Flight Phase:
Survivors:
No
Schedule:
Jakarta – Bombay – Karachi – Cairo – Rome – Amsterdam
MSN:
30-10-3
YOM:
1964
Country:
Region:
Crew on board:
14
Crew fatalities:
Pax on board:
15
Pax fatalities:
Other fatalities:
Total fatalities:
29
Circumstances:
Less than five minutes after a night takeoff from Bombay-Santa Cruz Airport, while climbing, the aircraft entered a nose-down attitude then plunged into the earth and crashed in a huge explosion some 32 km north of the airport. The aircraft disintegrated on impact and all 29 occupants were killed as well as one person on the ground. Few houses were damaged and few other people were injured.
Probable cause:
It was determined that the loss of control was the consequence of the partial or complete failure of all four engines during the initial climb. Investigations reported that during the stop at Bombay Airport, the wrong type of fuel was transferred into the tanks of the Coronado. Instead of kerosene, ground staff fueled the aircraft with regular benzin.

Crash of a Fokker F27 Friendship 400 in Malaybalay: 19 killed

Date & Time: Apr 27, 1967 at 1710 LT
Type of aircraft:
Operator:
Registration:
PK-PFB
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Malaybalay - Malaybalay
MSN:
10306
YOM:
1966
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
16
Pax fatalities:
Other fatalities:
Total fatalities:
19
Captain / Total flying hours:
4365
Captain / Total hours on type:
2190.00
Aircraft flight hours:
441
Aircraft flight cycles:
337
Circumstances:
The aircraft was under a two week lease from the owner, the Permina Oil Company of Indonesia, to the Royal Netherlands Aircraft Factories - Fokker, for the purpose of a series of demonstration flights in the Philippines. It arrived at Manila on 24 April 1967 and conducted demonstration flights at various airports on 26 and 27 April 1967. On that day the aircraft took off from Mactan at 0816 hours and after having flown to ten different aerodromes it arrived at Davao at 1557 hours where the main fuel tanks and water/ methanol tanks were filled to capacity. At 1635 hours the aircraft took off from Davao and landed at Malaybalay Airport on runway 06 at 1705 hours. It continued its landing roll up to the end of the runway, made a 180° turn and then took off from runway 24. According to ground witnesses the take-off was initiated with both engines at maximum power and the aircraft became airborne at about two-thirds of the runway length. At that time the right hand propeller was starting to slow down and stopped when the aircraft reached a height of about 1 metre above the ground. The aircraft appeared to have difficulty in gaining height and followed a creek between two hills in a right wing low attitude. It struck a tree and some bamboos and crashed on a hill 45 m higher than the runway elevation. The site of the accident was located 1 380 m from the end of runway 04 and 136.5 m to the right of its extended centre line. The accident occurred at 1710 hours. All three crew members and 16 passengers were killed.
Probable cause:
The probable cause of the accident was poor judgement of the pilot in taking off towards the direction where the terrain was unsuitable for single engine performance. Also contributing to the accident were the following:
- The gross take-off weight was more than that allowed to clear the rising terrain along the flight path,
- Inadequate available data regarding Malaybalay Airport.
Final Report:

Crash of a Lockheed L-188C Electra in Manado: 22 killed

Date & Time: Feb 16, 1967 at 1321 LT
Type of aircraft:
Operator:
Registration:
PK-GLB
Survivors:
Yes
Schedule:
Jakarta – Surabaya – Ujung Pandang – Manado
MSN:
2021
YOM:
1960
Flight number:
GA708
Country:
Region:
Crew on board:
8
Crew fatalities:
Pax on board:
84
Pax fatalities:
Other fatalities:
Total fatalities:
22
Captain / Total flying hours:
8054
Captain / Total hours on type:
718.00
Copilot / Total flying hours:
8336
Copilot / Total hours on type:
505
Aircraft flight hours:
12359
Circumstances:
Flight 708 was a scheduled domestic flight from Jakarta to Manado, with intermediate stops at Surabaya and Makassar. It departed Djakarta at 0030 hours GMT on 15 February and proceeded on an IFR flight plan to Surabaya. While en route to Surabaya No. 4 engine would not synchronize. The flight landed at 0200 hours at Surabaya where an oil leak on No. 1 propeller was found. After rectifying these faults the flight departed from Surabaya at 0300 hours. On approaching Makassar bad weather was reported and after two attempts to land, the pilot-in-command elected to divert to another aerodrome. Two aerodromes were available - Denpasar, the first alternate and Surabaya. Although Surabaya was at a greater distance, the pilot-in-command decided for various reasons to return to Surabaya-Juanda and remain overnight. An oil leak on No. 1 propeller was again observed and noted for rectification. The flight departed the next morning at 0010 hours for Makassar where it landed without incident. After approximately a one hour stop at Makassar the flight proceeded to Menado with an estimated time of arrival there of 0512 hours GMT. On approaching Menado the pilot-in-command requested the weather conditions and was given a cloud base of 900 ft and a visibility of 2 km. At an altitude of 1 500 ft the town of Menado and the beach were visible and the aircraft made a 360° turn over the bay of Menado: the aircraft then descended to 900 ft and intercepted the beach on a heading of 120' intending to make an approach to runway 18. The pilot-in-command sighted the runway to his right, continued the approach through a gap between two hills, and called for the undercarriage to be lowered and completion of final checks. He instructed the flight engineer to stand by for an overshoot at which time the approach was being continued with the flaps in the landing position. The aircraft banked 15°-20° to the right, and the co-pilot monitored and called the airspeed. After passing a hill 200 ft above the runway elevation and some 2 720 ft before the runway threshold the pilot-in-command realized he was too high, also the aircraft was still to the left of the centre line and banked to the right. The nose of the aircraft was lowered and after intercepting the glide path at an indicated airspeed of 130 kt the control column was moved rearwards to a normal descent position. With the airspeed rapidly decreasing below the target threshold speed of 125 kt, and whilst still banked to the right, the aircraft landed heavily 3 ft short of the runway manoeuvring area and some 156 ft short of the runway threshold. The undercarriage collapsed and the aircraft skidded, caught fire and came to rest on the runway 1 442 ft after the threshold on a heading of 225°. 22 passengers were killed.
Probable cause:
The Board determined that the probable cause of this accident was an awkward approach technique resulting in an excessive rate of sink on touchdown. Based on all available evidence the Board found that the following factors contributed to the accident:
- The runway width of 98 ft which looks smaller from the pilot's point of view,
- The uneven runway pavement which forces pilots to touchdown as close as possible to the threshold,
- The marginal weather conditions prevailing at the time of the accident which forced the pilot to accomplish a tight circuit,
- The relationship between the rate of sink and the negative thrust at low speed were not known to the pilot and the operator.
Final Report:

Crash of a Pilatus PC-6/340-H2 Porter in Ubrub

Date & Time: Dec 9, 1966
Operator:
Registration:
PK-NPX
Survivors:
Yes
MSN:
542
YOM:
1963
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Crashed in unknown circumstances in a wooded area. No casualties.

Crash of a Pilatus PC-6/340-H2 Porter in Genjem

Date & Time: Mar 8, 1966
Operator:
Registration:
PK-NPY
Flight Phase:
Survivors:
Yes
MSN:
538
YOM:
1964
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Crashed in unknown circumstances in Genjem. There were no casualties but the aircraft was written off.

Crash of a Douglas C-47A-25-DK in Palembang: 17 killed

Date & Time: Jan 1, 1966
Operator:
Registration:
PK-GDU
Survivors:
No
Schedule:
Medan – Palembang
MSN:
13463
YOM:
1944
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
13
Pax fatalities:
Other fatalities:
Total fatalities:
17
Circumstances:
While approaching Palembang-Sultan Badaruddin II Airport, the airplane collided with a second Garuda C-47 registered PK-GDE. Inbound from Jakarta, the second aircraft was also carrying 13 passengers and four crew members. Following the collision, both aircraft went out of control and crashed in a swampy area. All 34 occupants on both aircraft were killed.
Probable cause:
It is believed the collision was caused by the fact that both crew failed to pay sufficient attention to potential traffic while approaching the same airport at the same time. Poor ATC assistance may have been a contributing factor.