Ilyushin II-12

Operator:

Registration:

CCCP-L1714

Flight Phase:

Flight

Flight Type:

Survivors:

Site:

Plain, Valley

Schedule:

Moscow – Krasnoyarsk – Irkutsk – Khabarovsk

MSN:

8 301 28 11

YOM:

Flight number:

SU005

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

The crew was performing a flight from Moscow to Khabarovsk with intermediate stops in Krasnoyarsk and Irkutsk with a load consisting of 2,204 kilos of various goods and 115 kilos of mail. En route to Irkutsk, at an altitude of 3,000 meters, the left engine caught fire. The crew was able to extinguish the fire but the captain decided to divert to Nizhneudinsk Airport for a safe landing. As the crew was unable to maintain a safe altitude, the passengers jettisoned the mail bags. While at a height of some 40-60 meters with only the right engine running, the aircraft hit the tops of several larches, stalled and crashed in flames in a grain field located 5 km southeast of the Sheberta rail station, northeast of Marga. One crew member was injured while 13 other occupants were killed. The aircraft was destroyed.

Probable cause:

The fire on the left engine was the consequence of the failure of the piston #12 that broke in flight as a result of the defect of the upper part of the rod. Following this, the bolt broke and the fuel leaked into the engine and ignited while in contact with high temperature elements. It was reported that the piston failure was due to a bore default during the construction. Also, experts blamed the crew who did not take the decision to land immediately rather than trying to reach Nizhneudinsk Airport that was situated 60 kilometers from their position.

Crash of an Ilyushin II-12 in Novosibirsk: 25 killed

Date & Time: May 13, 1949 at 1410 LT

Type of aircraft:

Landing (descent or approach)

Operator:

Registration:

CCCP-L1791

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Moscow – Omsk – Novosibirsk – Krasnoyarsk

MSN:

93013208

YOM:

1949

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

Circumstances:

While descending to Novosibirsk Airport, the crew encountered bad weather conditions with thunderstorm activity, low clouds, poor visibility, hail and turbulences. On approach, lightning hit the cockpit. The copilot and the flight engineer were seriously injured and lost consciousness. The copilot fell onto the control column and the captain tried to maintain a directional control. Shortly later, the aircraft banked right to 65° and then dove into the ground and crashed in flames in a field located 12 km from the airport. The aircraft was destroyed by impact forces and a post crash fire and all 25 occupants were killed.

Probable cause:

The loss of control on approach was caused by adverse weather conditions resulting from a violent storm consisting of hail and turbulences. Investigations revealed that lightning struck the cockpit and that two crew members were seriously injured and lost consciousness, making it difficult to continue the flight. Investigators blamed the pilots who started the approach in such weather conditions but nevertheless hold that they were not properly briefed by meteorologists. It was concluded that the crash was the combination of the following factors: unexpected weather conditions, wrong decisions on part of the flying crew, poor management on part of the flight control service, lack of communication between the different departments involved and difficulties with radio contacts.

Crash of an Ilyushin II-12 in Stalino: 10 killed

Date & Time: Jan 19, 1949 at 1052 LT

Type of aircraft:

Operator:

Registration:

CCCP-L1381

Flight Phase:

Takeoff (climb)

Flight Type:

Survivors:

Site:

Schedule:

Stalino – Kiev – Moscow

MSN:

30 109

YOM:

1947

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

709

Circumstances:

Shortly after takeoff from Stalino Airport, while climbing to a height of 90 meters, the right engine oversped while the left engine lost power. The aircraft stalled, hit an electric pole and crashed in flames onto a house located near the airport. A crew member was seriously injured while all eight other occupants were killed as well as two people in the house. The aircraft was destroyed by impact forces and a post crash fire.

Probable cause:

It was determined that the right engine oversped due a structural shortcoming of the screw regulator. Regarding the loss of power on the left engine, it was not possible to determine its cause due to the fact that the engine was totally destroyed by fire. An unappropriated reaction of the crew to the double engine dysfunction was considered as a contributory factor.

Crash of an Ilyushin II-12P in Valuevo: 4 killed

Date & Time: Dec 23, 1948 at 1525 LT

Type of aircraft:

Operator:

Registration:

CCCP-L1731

Flight Phase:

Flight

Flight Type:

Positioning

Survivors:

Site:

Schedule:

Khodynka – Lyubertsy – Tashkent

MSN:

8 301 29 08

YOM:

1948

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

The aircraft was parked at Khodynka and has to be transferred to Tbilisi by an Aeroflot crew from Georgia. Unfortunately, this crew arrived too late and another crew from the Uzbekistan Aeroflot Division took over the airplane for a transfer to Tashkent. After takeoff, the crew failed to announce the modification to ATC, cut the route and continued at an insufficient altitude when the aircraft collided with an Aeroflot Douglas TS-62 registered CCCP-L861. Carrying four passengers and four crew members, the TS-62 just took off from Moscow-Vnukovo Airport and was climbing out bound for Moscow-Bykovo Airport. Both aircraft dove into the ground and crashed in a wooded area located 6 km southeast of the airport, in Valuevo. Both aircraft were destroyed and all 12 occupants were killed.

Probable cause:

Wrong decision on part of the Ilyushin II-12' crew who decided to modify his route without prior permission from ATC.

Crash of an Ilyushin II-12 near Yevlakh: 10 killed

Date & Time: Oct 12, 1948 at 1300 LT

Type of aircraft:

Operator:

Registration:

CCCP-L1450

Flight Phase:

Flight

Flight Type:

Survivors:

Site:

Mountains

Schedule:

Tashkent – Baku – Tbilisi – Sochi

MSN:

8 30 25 17

YOM:

1948

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

274

Circumstances:

About one hour after departure from Baku-Bina Airport, while flying some 250 km north of the capital city, weather conditions worsened. Due to poor reception of local beacon transmission, the captain decided to return to Baku but was unable to locate his position with certainty. While cruising at an altitude of 3,000 meters in poor visibility, the aircraft hit the slope of a mountain. SAR operations were conducted but eventually suspended after few days as no trace of the aircraft nor the 10 occupants was found.

Probable cause:

It was determined that the crew did not prepare the flight correctly and failed to obtain suitable information about weather conditions enroute.

Crash of an Ilyushin II-12 in Buguruslan: 4 killed

Date & Time: Sep 9, 1948 at 1103 LT

Type of aircraft:

Operator:

Registration:

CCCP-L1427

Flight Phase:

Takeoff (climb)

Flight Type:

Training

Survivors:

Site:

Schedule:

Buguruslan - Buguruslan

MSN:

30258

YOM:

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

245

Circumstances:

The crew, consisting of one instructor and three pilots, was completing a local training flight in Buguruslan-Baymakovo Airport. A first training program was completed at an altitude of 1,000 meters and the instructor ordered the crew to return to the airport. On final approach, during the last segment, the instructor ordered the crew to go around and increased power on both engines. During the initial climb, while at a height of 150 meters, the instructor shut down the right engine and feathered its propeller. At the same time, the aircraft banked left up to 30°, stalled, dove into the ground and crashed in a huge explosion. The aircraft was destroyed by impact forces and a post crash fire and all four crew members were killed.

Probable cause:

It was determined that the aircraft stalled during initial climb due to the combination of flaps deployed at an angle of 17° and the power reduction on the right engine. Unfortunately, the distance between the aircraft and the ground was insufficient to a expect any recovery. The instructor decided to make a single engine climb out in violation of the NPP-47 training program and instructions published for IL-12. Wrong interpretation of the situation on part of the rest of the crew also contributed to the loss of control. The following factors were considered as contributory:
- Absence of appropriate measures concerning pilots management and training,
- Lack of control and demands in relation to the flight crews.

Crash of an Ilyushin II-12 in Novosibirsk: 1 killed

Date & Time: Sep 2, 1948 at 0015 LT

Type of aircraft:

Operator:

Registration:

CCCP-L1465

Flight Phase:

Takeoff (climb)

Flight Type:

Survivors:

Site:

Schedule:

Khabarovsk – Chita – Irkutsk – Novosibirsk – Omsk – Sverdlovsk – Moscow-Vnukovo

MSN:

83 024 21

YOM:

Flight number:

SU006

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Circumstances:

Just after liftoff, while climbing to a height of 2-3 meters, the aircraft stalled. As the undercarriage have been raised, the aircraft hit the ground on its belly, causing the propeller of the right engine to be sheared off. A blade went through the fuselage and penetrated into the cabin, killing a passenger. The aircraft slid for several hundred yards, lost its left wing and left engine before coming to rest 491 meters past the runway end. Five passengers were injured and the aircraft was written off.

Probable cause:

The accident was attributed to a lack of coordination within the flight crew. It was determined that the flight engineer mistakenly reduced the engine power shortly after liftoff, causing the speed to drop and the aircraft to stall. The captain's lack of training was considered as a contributory factor.

Crash of an Ilyushin II-12P in Krasnoyarsk: 7 killed

Date & Time: Dec 18, 1947 at 0930 LT

Type of aircraft:

Landing (descent or approach)

Operator:

Registration:

CCCP-L1343

Flight Phase:

Flight Type:

Survivors:

Site:

Schedule:

Krasnoyarsk – Omsk

MSN:

30 049

YOM:

1947

Flight number:

SU006

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Aircraft flight hours:

166

Circumstances:

Fifteen minutes after takeoff from Krasnoyarsk-Severniy Airport, the oil pressure on the left engine dropped. The crew shut down the engine, feathered the propeller and decided to return to Krasnoyarsk for a safe landing. On final approach, the speed was too high and the crew encountered problems to lower the undercarriage so the captain elected to make a go around. Few minutes later, during a second attempt to land, while at a height of some 50 meters, the aircraft stalled and crashed few hundred yards short of the runway threshold. Eighteen occupants were injured while seven others, among them four crew members, were killed.

Crash of an Ilyushin II-12 in Taldom

Date & Time: Dec 1, 1947

Type of aircraft: