Crash of a Convair CV-880-22-2 in Chicago

Date & Time: Dec 20, 1972 at 1800 LT
Type of aircraft:
Operator:
Registration:
N8807E
Flight Phase:
Survivors:
Yes
Schedule:
Tampa - Chicago
MSN:
22-00-29
YOM:
1960
Flight number:
DL954
Crew on board:
7
Crew fatalities:
Pax on board:
86
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
5500
Captain / Total hours on type:
2400.00
Copilot / Total flying hours:
3600
Copilot / Total hours on type:
500
Aircraft flight hours:
37640
Circumstances:
Flight DL954 from Tampa landed uneventfully at Chicago-O'Hare Airport. The crew was cleared to taxi to the gate and to cross runway 27L when the airplane was struck by a North Central Airlines Douglas DC-9-31 registered N954N. En route to Duluth via Madison, the DC-9 was carrying 41 passengers and a crew of four and his pilot just received the clearance to take off from runway 27L. One of the DC-9's wing struck the tail of the Convair that stopped immediately. out of control, the DC-9 veered off runway and came to rest in flames. The Convair was damaged beyond repair and the DC-9 was destroyed by a post crash fire. Among the 93 occupants on board the Convair, 10 were injured. Among the 45 occupants on board the DC-9, 10 were killed and 35 were injured, some of them seriously.
Probable cause:
Failure of the air traffic control system to ensure separation of aircraft during a period of restricted visibility. This failure included the following:
- The controller omitted a critical word which made his transmission to the flight crew of the Delta CV-880 ambiguous,
- The controller did not use all the available information to determine the location of the CV-880,
- The CV-880 flight crew did not request clarification of the controller's communications.
Final Report:

Crash of a Douglas DC-9-31 in Chicago: 10 killed

Date & Time: Dec 20, 1972 at 1800 LT
Type of aircraft:
Operator:
Registration:
N954N
Flight Phase:
Survivors:
Yes
Schedule:
Chicago – Madison – Duluth
MSN:
47159
YOM:
1967
Flight number:
NC575
Crew on board:
4
Crew fatalities:
Pax on board:
41
Pax fatalities:
Other fatalities:
Total fatalities:
10
Captain / Total flying hours:
20261
Captain / Total hours on type:
3455.00
Copilot / Total flying hours:
4537
Copilot / Total hours on type:
1601
Aircraft flight hours:
11812
Circumstances:
The crew was cleared to takeoff from runway 27L. During the takeoff roll completed by night and a visibility limited to 250 feet due to fog, the captain called for rotation and the copilot, the pilot-in-command, started the rotation when one of the wing struck the tail of a Delta Airlines Convair CV-880. Registered N8807E, the Convair just landed at O'Hare Airport on flight DL954 from Tampa and its crew was cleared to cross runway 27L to roll to the gate. The collision caused the tail of the Convair to be torn off. Out of control, the DC-9 landed back onto the runway then veered off and came to rest in flames. The Convair was damaged beyond repair and the DC-9 was destroyed by a post crash fire. While 10 people on board the Convair were injured, 10 passengers on board the DC-9 were killed and 35 others were injured, some of them seriously.
Probable cause:
Failure of the air traffic control system to ensure separation of aircraft during a period of restricted visibility. This failure included the following:
- The controller omitted a critical word which made his transmission to the flight crew of the Delta CV-880 ambiguous,
- The controller did not use all the available information to determine the location of the CV-880,
- The CV-880 flight crew did not request clarification of the controller's communications.
Final Report:

Crash of a Curtiss C-46F-1-CU Commando near Randall Lake

Date & Time: Dec 20, 1972
Type of aircraft:
Operator:
Registration:
CF-IHV
Flight Phase:
Survivors:
Yes
MSN:
22551
YOM:
1945
Country:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Crashed under unknown circumstances near Randall Lake. There were no casualties.

Crash of a Rockwell Shrike Commander 500S near San Francisco de Sales: 5 killed

Date & Time: Dec 18, 1972 at 1839 LT
Registration:
HK-1208
Flight Phase:
Survivors:
No
Site:
Schedule:
Barranquilla - Bogotá
MSN:
500-3109
YOM:
1971
Country:
Crew on board:
1
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
5
Circumstances:
The twin engine airplane departed Barranquilla-Ernesto Cotissoz Airport at 1630LT on a flight to Bogotá-El Dorado. While flying by night and limited visibility, the aircraft struck the slope of a mountain located near San Francisco de Sales, about 35 km northwest of Bogotá. The aircraft was destroyed upon impact and all five occupants were killed.

Crash of a Boeing 737-222 in Chicago: 45 killed

Date & Time: Dec 8, 1972 at 1428 LT
Type of aircraft:
Operator:
Registration:
N9031U
Survivors:
Yes
Site:
Schedule:
Washington DC - Chicago - Omaha
MSN:
19069/75
YOM:
1968
Flight number:
UA553
Crew on board:
6
Crew fatalities:
Pax on board:
55
Pax fatalities:
Other fatalities:
Total fatalities:
45
Captain / Total flying hours:
18000
Captain / Total hours on type:
2435.00
Copilot / Total flying hours:
10638
Copilot / Total hours on type:
1676
Aircraft flight hours:
7247
Circumstances:
Flight UA553 departed Washington-National Airport at 1250LT for Omaha with an intermediate stop at Chicago-Midway Airport. Chicago ARTCC cleared the crew to descend to 4000 feet and the flight was given vectors for a Midway Airport runway 31L localizer course. At 14:19 the flight was transferred to Chicago Approach Control which later requested UA553 to slow down to 180 knots and later down to 160 knots. After issuing a descent clearance down to 2000 feet at 14:23 the controller requested the flight to slow down to approach speed because of separation between UA553 and a preceding Aero Commander. At 14:24 the Aero Commander passed the Outer Marker and was cleared to land on runway 31L. Two minutes later UA553 passed the Outer Marker inbound. Then, at 14:27:04 the air traffic controller decided to issue a missed approach clearance: "United 553 execute a missed approach make a left turn to a heading of 180 climb to 2000". At the same time, having just reached 1000 feet, the stick shaker suddenly activated. Full power was applied and the gear was retracted in an attempt to execute a missed approach. The Boeing continued to descend however, attaining a high nose up attitude (of at least 30deg, according to some survivors). The aircraft then clipped a tree and impacted trees, houses, utility pole cables and garages before coming to rest. Post crash fire destroyed part of the fuselage.
Probable cause:
The captain's failure to exercise positive flight management during the execution of a non-precision approach, which culminated in a critical deterioration of airspeed into the stall regime where level flight could no longer be maintained.
Final Report:

Crash of a Fokker F27 Friendship 600 near Jalkot: 31 killed

Date & Time: Dec 8, 1972 at 1215 LT
Type of aircraft:
Operator:
Registration:
AP-AUS
Flight Phase:
Survivors:
No
Site:
Schedule:
Gilgit - Rawalpindi
MSN:
10314
YOM:
1966
Flight number:
PK631
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
26
Pax fatalities:
Other fatalities:
Total fatalities:
31
Aircraft flight hours:
11077
Aircraft flight cycles:
16720
Circumstances:
The airplane departed Gilgit Airport at 1140LT bound for Rawalpindi on flight PK631. En route, while cruising at an altitude of 9,000 feet in poor weather conditions, the airplane struck the slope of a snow covered mountain located near Jalkot. The wreckage was found few hours later and none of the 31 occupants survived the crash. At the time of the accident, the visibility was nil due to low clouds and snow falls. Apparently, the crew lost his orientation and maybe started the descent prematurely, causing the aircraft to struck the ground.
Probable cause:
Controlled flight into terrain.

Crash of a PZL-Mielec AN-2TP in Yerbogachon

Date & Time: Dec 3, 1972
Type of aircraft:
Operator:
Registration:
CCCP-41306
Flight Phase:
Survivors:
Yes
MSN:
1G64-21
YOM:
1965
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Crashed near Yerbogachon following an engine failure. There were no casualties.
Probable cause:
Engine failure.

Crash of a Douglas DC-8-62 in Moscow: 61 killed

Date & Time: Nov 28, 1972 at 1951 LT
Type of aircraft:
Operator:
Registration:
JA8040
Flight Phase:
Survivors:
Yes
Schedule:
Copenhagen - Moscow - Tokyo
MSN:
46057
YOM:
1969
Flight number:
JL446
Country:
Region:
Crew on board:
14
Crew fatalities:
Pax on board:
62
Pax fatalities:
Other fatalities:
Total fatalities:
61
Circumstances:
A McDonnell Douglas DC-8-62 passenger plane, JA8040, was destroyed when it crashed on takeoff from Moscow's -Sheremetyevo Airport (SVO), Russia. Five of the 14 crew members and ten of the 62 passengers survived the accident. JAL flight JL446 was a scheduled international flight from Copenhagen (CPH), Denmark to Tokyo-Haneda (HND), Japan with an en route stop in Moscow. The flight to Moscow was uneventful and the airplane landed at 18:17. After servicing of the aircraft startup and taxi clearance was received at 19:38. JL446 was cleared for takeoff from runway 25 at 19:49. On takeoff the DC-8 climbed to 100 m with a supercritical angle of attack and lost height abruptly. It hit the ground and burst into flames.
Probable cause:
The cause of the disaster to aircraft DC-8-62 JA-8040 resided in the fact that during take-off and following attainment of the safety speed V2, the crew put the aircraft into a supercritical angle of attack which resulted in loss of speed and altitude. The aircraft's assumption of supercritical angles of attack was the consequence of one of the following circumstances:
- Inadvertent extension of the spoilers in flight, leading to a fall in the maximum value of the lift ratio and an increase in drag;
- Loss of control of the aircraft by the crew in conditions associated with malfunctioning of the No. 1 or No. 2 engine consequent upon possible ice formation on the engine intake at a time when the de-icing system was switched off.
The anomalies in the functioning of the engines observed by the crew and other witnesses may have arisen after the aircraft had assumed a supercritical angle of attack with the spoilers extended.
Final Report:

Crash of an Avro 748-2-232 in Bislig

Date & Time: Nov 28, 1972 at 0913 LT
Type of aircraft:
Operator:
Registration:
PI-C1027
Survivors:
Yes
Schedule:
Surigao - Bislig
MSN:
1609
YOM:
1966
Flight number:
PR463
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
24
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
For unknown reason, the twin engine airplane landed hard on runway 23. It bounced twice when the nose gear collapsed. Out of control, the airplane veered off runway to the left then came to rest. While all 28 occupants escaped uninjured, the aircraft was damaged beyond repair.

Crash of a Yakovlev Yak-40 in Krasnoyarsk

Date & Time: Nov 22, 1972
Type of aircraft:
Operator:
Registration:
CCCP-87819
Flight Phase:
Survivors:
Yes
Schedule:
Krasnoyarsk – Tomsk
MSN:
9 23 10 24
YOM:
1972
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
15
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
On take-off from Krasnoyarsk-Severny Airport, just after lift off, the three engine aircraft banked left, causing the left wing to struck the runway surface. Out of control, the aircraft veered off runway and crashed close to the runway threshold. While the aircraft was damaged beyond repair, all 18 occupants were injured.
Probable cause:
It appears the aircraft has not been properly deiced prior to takeoff.