Ilyushin II-12

Operator:

Registration:

OK-DBP

Flight Phase:

Takeoff (climb)

Flight Type:

Survivors:

Site:

Plain, Valley

Schedule:

Zurich – Prague

MSN:

9 301 35 17

YOM:

1949

Flight number:

OK548

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

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Total fatalities:

Circumstances:

After takeoff from Zurich-Kloten Airport, while climbing by night, the airplane went out of control and crashed nose first in a field located in Eglisau, about 12 km north of the airport. The aircraft disintegrated on impact and all 23 occupants have been killed. A crater of 10 meters width and three meters depth was found at the point of impact.

Probable cause:

The exact cause of the loss of control could not be determined with certainty.

Crash of an Ilyushin II-12 in Dikson

Date & Time: Sep 8, 1956

Type of aircraft:

Operator:

Registration:

CCCP-N525

Flight Phase:

Flight Type:

Survivors:

Site:

MSN:

9 301 31 08

YOM:

1949

Location:

Country:

Region:

Crew on board:

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Pax on board:

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Other fatalities:

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Circumstances:

The final approach was completed in low clouds and marginal visibility when the airplane hit the runway surface and bounced. On impact, the undercarriage were severely damaged, the aircraft rolled for 400 meters and then veered off runway to the right before coming to rest. There were no injuries but the aircraft was damaged beyond repair.

Probable cause:

Wrong approach configuration on part of the captain in weather conditions considered as normal. Poor pilot techniques and overconfidence were considered as contributing factors.

Crash of an Ilyushin II-12 in Berlin: 3 killed

Date & Time: Apr 26, 1956

Type of aircraft:

Operator:

Flight Phase:

Flight Type:

Survivors:

Site:

City

Schedule:

Moscow – Warsaw – Berlin

Location:

Country:

Region:

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Circumstances:

While approaching Berlin-Schönefeld Airport, the airplane was too low and struck the top of the Bohnsdorf church, crashed and burst into flames three km from the airfield. Three crew members were killed and three others were injured. For undetermined reason, the crew was approaching the airport at an insufficient altitude.

Crash of an Ilyushin II-12 in Komarovo: 7 killed

Date & Time: Sep 15, 1955 at 1245 LT

Type of aircraft:

Operator:

Registration:

CCCP-L1359

Flight Phase:

Flight

Flight Type:

Survivors:

Site:

Plain, Valley

Schedule:

Moscow – Krasnoyarsk – Irkutsk – Khabarovsk

MSN:

30 074

YOM:

Flight number:

SU005

Location:

Country:

Region:

Crew on board:

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Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

5734

Circumstances:

The aircraft was performing flight SU005 from Moscow to Khabarovsk with intermediate stops at Krasnoyarsk and Irkutsk, carrying three passengers, a crew of four and a load of various goods for a total weight of 417 kilos. While cruising at an altitude of 3,000 meters, weather conditions deteriorated and the crew encountered thunderstorm activity. Due to severe turbulences, the aircraft went out of control and entered a dive. At an altitude between 500 and 1,000 meters, the airplane disintegrated in the air and all debris scattered in a field and a wooded area located in Komarovo, about 37 km south-southwest of Kansk. All seven occupants were killed.

Probable cause:

It was determined that the loss of control was the consequence of severe turbulences that exceeded the design of certain parts of the airplane. Poor flight preparation on part of the operator and the failure to consider the possibility of a deterioration of the weather conditions were considered as contributing factors. Also, the crew was not properly briefed about weather conditions prior to departure from Krasnoyarsk Airport.

Crash of an Ilyushin II-12 in Nagurskoye

Date & Time: Jul 2, 1955

Type of aircraft:

Operator:

Registration:

CCCP-N480

Flight Phase:

Flight Type:

Supply

Survivors:

Site:

Nagurskoye (Franz Josef Archipelago)

Schedule:

Dikson - Nagurskoye

MSN:

30 237

YOM:

1950

Location:

Arkhangelsk oblast

Country:

Russia

Region:

Asia

Crew on board:

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Pax on board:

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Other fatalities:

Total fatalities:

Circumstances:

The crew was completing a supply mission to the ice expedition christened 'Sever 7'. On approach to Nagurskoye ice strip, the pilot in command encountered low visibility due to thick fog. Rather than to divert to a suitable terrain, he tried three times to land, without success. During the fourth attempt to land, the aircraft was too low and misaligned when it struck the ground on short final. On touchdown, the left main gear was sheared off and the aircraft went out of control and came to rest. There were no casualties but the aircraft was damaged beyond repair.

Probable cause:

Approach completed below minima weather conditions.

Crash of an Ilyushin II-12 near Kepino: 5 killed

Date & Time: Mar 4, 1955 at 1051 LT

Type of aircraft:

Charter/Taxi (Non Scheduled Revenue Flight)

Operator:

Registration:

CCCP-N479

Flight Phase:

Flight

Flight Type:

Survivors:

Site:

Plain, Valley

Schedule:

Mys-Kamennyy – Amderma – Arkhangelsk – Moscow

MSN:

30 236

YOM:

Location:

Country:

Region:

Crew on board:

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Other fatalities:

Total fatalities:

Aircraft flight hours:

2630

Circumstances:

While cruising at an altitude of 2,700 meters between Amderma and Arkhangelsk, a technical failure occurred on the manifold of the left engine, causing fuel to spill in the nacelle and a fire to develop. The crew tried to extinguish the fire but without success. So the captain decided to attempt an emergency landing when the aircraft hit trees and crashed in a dense wooded area located near Poltozero Lake. Rescuers arrived on site a day later and were able to evacuate 26 wounded people while five others were killed, among them four crew members as the cockpit was totally destroyed upon impact.

Probable cause:

It was determined that the direct cause of the accident was a fire that occurred in the nacelle of the left engine due to the failure of a fuel line, presumably from a ringing tube located in the left nacelle as a result of a metallurgical defect. The fuel then spilled inside the nacelle and ignited in contact with exhaust gases. The nacelle caught fire and later, the engine detached. It was also reported that the validity of the certificate of airworthiness expired on March 2, which obviously did not provide an opportunity to fly to Pevek and back. A small remainder of the resource obliged the crew to closely monitor the condition of the material part and regularly perform the required maintenance at the intermediate airports. In fact, the crew in the process of the flight exceeded the established daily norm and failed to perform the 25-hour routine maintenance during the three-day parking at Pevek Airport.

Crash of an Ilyushin II-12 in Pervomaiski AFB: 1 killed

Date & Time: Dec 5, 1954 at 2055 LT

Type of aircraft:

Operator:

Registration:

CCCP-L1320

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Almaty – Karaganda – Moscow

MSN:

30 026

YOM:

1947

Flight number:

SU098

Location:

Pervomaiski AFB (Almaty)

Almaty Province

Country:

Kazakhstan

Region:

Asia

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

4645

Circumstances:

Shortly after takeoff from Almaty Airport, while climbing to a height of 80 meters at a speed of 180 km/h, the left engine failed and caught fire. The captain decided to divert to the nearest Pervomaiski Airbase located 4,5 km from his position. On final approach, the aircraft stalled, hit a first building, several trees, two telegraph poles and eventually crashed on a second building. A stewardess was killed while 18 other occupants were injured, some of them seriously. The aircraft was destroyed.

Probable cause:

The left engine failed and caught fire shortly after takeoff due to the failure of the tenth cylinder, apparently due to poor maintenance on part of the company mechanics. Nevertheless, the techniques adopted by the pilot on short final were inappropriate, which contributed to the stall.

Crash of an Ilyushin II-12 near Krasnoyarsk: 19 killed

Date & Time: Oct 28, 1954 at 0010 LT

Type of aircraft:

Operator:

Registration:

CCCP-L1789

Flight Phase:

Flight

Flight Type:

Survivors:

Site:

Mountains

Schedule:

Irkutsk – Novosibirsk

MSN:

9 301 32 06

YOM:

1949

Flight number:

SU136

Location:

Country:

Region:

Crew on board:

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Pax on board:

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Other fatalities:

Total fatalities:

Circumstances:

The crew was supposed to fly from Irkutsk to Novosibirsk but weather conditions at destination deteriorated in flight so the crew was diverted to Krasnoyarsk Airport. While approaching the Krasnoyarsk area by night, the crew was cleared by ATC to descend to 1,500 meters. Descending to the altitude of 1,725 meters in poor visibility, the twin engine aircraft hit the east slope of Mt Sivukha (1,807 meters high) located 30 km from the Mana River. As the airplane failed to arrive in Krasnoyarsk, SAR operations were conducted but eventually suspended few days later as no trace of the aircraft nor the 19 occupants was found. The wreckage was found in June 1955, about 132 km south of the intended route. The aircraft was destroyed upon impact and all 19 occupants have been killed, among them nine foreign citizens (one Polish, one Chinese and 4 Cyprus, four UNO emissaries in Vietnam).

Probable cause:

At the time of the accident, the aircraft was off course by 132 km and deviated from the prescribed flight path from 10° due to strong winds blowing from the northwest up to 130 km/h. Poor flight organisation and follow up, letting the crew descending to 1,500 meters while the minimum safe altitude was 2,100 meters in the area and incomplete information transmitted to the crew regarding wind component that did not reflect the truth were considered as contributing factors.

Crash of an Ilyushin II-12P in Novossibirsk: 29 killed

Date & Time: Sep 27, 1954 at 0057 LT

Type of aircraft:

Operator:

Registration:

CCCP-L1365

Flight Phase:

Flight Type:

Survivors:

Site: