Scheduled Revenue Flight

The pilot reported that the #2 engine began to lose power as he was flying under a low overcast and about 500 feet above the Yukon River. Subsequently, the airplane descended and the fuselage and left propeller contacted the water. With these problems and decreasing visibility ahead, the pilot elected to make a 180° turn. He said that about midway through the turn, the #2 engine lost all power. The airplane then crashed into trees and was destroyed by a post-impact fire. No reason was found for either engine to lose power before water or tree contact.

On short final to Rushan Airport, the aircraft lost height and struck the ground 40 meters short of runway threshold and came to rest. There were no casualties but the aircraft was considered as damaged beyond repair.

The aircraft operated on a passenger service from Yerevan-Erebuni Airport to Stepanakert Airport. In addition to 30 passengers with tickets, the crew took on board 13 unregistered passengers. With this heavy load, the captain requested a lower altitude, 4,500 meters, for the flight. This was granted by ATC, while the regular altitude on the route was 5,100-6,600 meters with a minimum safe height of 4,516 meters. At 09:59, at a distance of 21 km after passing the Azizbekov NDB, the crew was taken over by a controller of Kafan Airport. The controller instructed to keep the height of 4,500 meters to the point of descent. The flight was the cleared down to 3,900 meters and the aircraft descended over mountains covered by a cloud deck with an upper boundary of 3,000-3,300 meters. However, the flight crew never reported their exact position and the controller did not check it on radar. The flight reached the altitude of 3,900 meters at 10:07, and continued descending without informing the controller. At 10:08, the captain requested to contact Stepanakert, while giving a false report that the flight altitude was 3,900 meters. Not observing the aircraft, not knowing its actual flight altitude and not having direct communication with the controller at Stepanakert, the Kafan ATC controller allowed the crew to switch to the Stepanakert frequency. The captain reported to the controller that they were at an altitude of 3,900 meters and requested permission to descend to 2,400 meters. The controller at Stepanakert, having no radar facilities to monitor the aircraft, permitted a descent to 3,000 meters the NDB. At 10:09:57, the aircraft collided with a rocky mountain slope at an altitude of 2,520 meters while descending in clouds. All 47 occupants were killed.

The single engine airplane apparently crashed upon landing. All 10 occupants were slightly injured and the aircraft was damaged beyond repair.

As engine power was increased for takeoff, the n°1 engine accelerated beyond target epr. Engine shut down had to be done with the fuel shut off lever. The asymmetric thrust was controlled with nose wheel steering. Before the airplane could be stopped the nose wheels separated from the landing gear. The investigation revealed that the fuel pump output spline to the fuel control had stripped. It occurred at such a time that the fuel control sensed an underspeed and increased Fuel flow. Misalignment of the spline shaft resulted from improper machining during pump modification. The nose gear inner cylinder failed in fatigue in an area of excessive grinding during overhaul. Two passengers were slightly injured.

Following a wrong approach configuration, the twin engine aircraft landed too far down the runway 23 which is 1,600 meters long. After touchdown, the crew realized that the landing distance available was too short and decided to veer off runway. The aircraft rolled on a grassy area and came to rest. All 12 occupants evacuated safely while the aircraft was damaged beyond repair.

While approaching Union Island on a flight from Castries-Vigie Airport, the twin engine aircraft stalled and crashed in the sea. Both occupants were killed.

After takeoff from Port Moresby Airport, the pilot encountered poor weather conditions. While flying at an insufficient altitude, the twin engine aircraft struck the slope of a mountain and crashed 35 km north of Port Moresby. SAR operations were initiated but the wreckage was found in an isolated area five days later only. Four passengers seriously wounded were rescued while eight other occupants were killed. At the time of the accident, the visibility was poor.

The four engine aircraft departed Moscow-Domodedovo Airport at 1237LT with 99 passengers and 10 crew members on board. Following an uneventful flight of 5 hours and 42 minutes, the crew started the approach to Yakutsk-Intl Airport by night. After touchdown on runway 23 (3,300 meters long), the flight engineer mistakenly selected reverse thrust on engine n°2 and 3 only, letting both engines n°1 and 4 running at takeoff power. Both pilots took few seconds to identify the problem and the aircraft's speed was about 265-270 km/h and there were 655 meters of remaining runway. The captain attempted an emergency braking procedure when all tyres burst and the aircraft overran runway at a speed of 200 km/h, lost its undercarriage and came to rest 397 meters further, broken in three. All 109 occupants were evacuated, among them six were injured, two seriously. The aircraft was written off.

The approach to Altamira Airport was completed by night and marginal weather conditions. Despite the visibility was limited with the presence of fog bank on final, the crew decided to continue under VFR mode. On short final, the aircraft was too low, struck trees and crashed 850 meters short of runway 07. Both pilots and 20 passengers were killed while 22 other occupants were injured.