Scheduled Revenue Flight

The airplane departed Kunming-Wujiaba Airport at 1315LT on a schedule service (flight MU5735) to Guangzhou, carrying 123 passengers and a crew of nine. At 1420LT, while cruising at an altitude of 29,100 feet, the aircraft entered an uncontrolled descent until 7,400 feet then climbed to 8,600 feet. It finally entered a steep descent and crashed almost two minutes later in a vertical attitude on hilly and wooded terrain located some 20 km southwest of Wuzhou. The airplane disintegrated on impact and all 132 occupants were killed. Two days after the accident, the CVR was found while the DFDR was found on March 27.

The single engine airplane departed Moroni Airport at 1155LT on a schedule flight to Mohéli, carrying 12 passengers and two pilots. While approaching Mohéli, the crew encountered marginal weather conditions when the aircraft crashed in the sea some 2,5 km northwest of Mohéli-Bander es Eslam Airport. After 24 hours of intense research, only few debris were found floating on water (such a wheel and wing fragments). No trace of the 14 occupants was found.

The pilot was conducting a scheduled air taxi flight with five passengers onboard. Shortly after departure, the pilot began to smell an electrical burn odor, and he elected to return to the airport. About 1 minute later, the electrical burn smell intensified, which was followed by visible smoke in the cockpit, and the pilot declared an emergency to the tower. After landing and all the passengers had safely departed the airplane, heavy smoke filled the cockpit and passenger compartment, and the pilot saw a candle-like flame just behind the pilot and co-pilot seats, just beneath the floorboards of the airplane. Moments later, the airplane was engulfed in flames. Postaccident examination of the airframe revealed the origin of the fire to be centered behind the pilot’s row of seats, where a wire harness was found improperly installed on top of the aft fuel line from the left tank. Examination of the wire harness found a range of thermal and electrical damage consistent with chafing from the fuel line. It is likely that the installation of the wire harness permitted contact with the fuel line, which resulted in chafing, arcing, and the subsequent fire.

A pilot-rated witness observed the airplane during the final approach to the destination airport and stated that the airplane was flying slowly, with a high pitch attitude, and was “wallowing” as if nobody was flying. The airplane stalled and impacted the ground about 300 ft from the runway. GPS and automatic dependent surveillance-broadcast (ADS-B) data captured the accident flight, but the ADS-B data ended about 0.24 miles before the accident. GPS data showed that the airplane’s speed was at or near the published stall speed for the airplane’s given loading condition. The airplane sustained substantial damage to the fuselage and both wings. Examination of the airplane verified flight and engine control continuity. No preimpact anomalies were found with respect to the airplane, engines, or systems. The pilot allowed the airspeed to decrease during the approach, increased pitch attitude, and exceeded critical angle of attack, which resulted in an aerodynamic stall and spin into terrain.

After an uneventful return flight to Barbuda, the aircraft departed Antigua at 2114 hrs (1714 hrs local) for John A Osborne Airport, Montserrat, with the pilot and six passengers on board. The aircraft cruised at 2,000 ft enroute and the pilot recalled there were good visual meteorological conditions throughout the 19 minute flight. On arriving at Montserrat there were no other aircraft operating in the vicinity of the airport and the pilot positioned the aircraft visually on a downwind leg for Runway 10. The pilot reported he commenced the approach, flying an approach speed of 65 kt, reducing to 60 kt as the aircraft touched down. The runway surface was dry and the pilot described the landing as “smooth”. After the main landing gear touched down, but prior to the nosewheel contacting the runway, the pilot applied the brakes. He reported that the left brake felt “spongy” and did not seem to act, but that the right brake felt normal. The pilot was unable to maintain directional control of the aircraft which veered to the right two seconds after touchdown, departing the runway a further three seconds later. The aircraft continued across the adjacent grassed area before impacting an embankment close to the runway. After the aircraft had come to a stop, the pilot shut down the engines using the normal shut down procedure. The left main gear had collapsed and rendered the left cabin exit unusable. The pilot evacuated through the flight deck door which was on the left of the aircraft. The six passengers were able to evacuate through the right cabin exit. The airport fire service then arrived at the aircraft, less than one minute after the accident.

On approach to Kazashinskoye Airport, the crew encountered poor visibility due to the night and fog and initiated a go-around procedure. During the second attempt to land, the twin engine aircraft descended too low, impacted trees and crashed in a wooded area located 4 km short of runway. Three passengers and a pilot were killed while 12 others occupants were injured. The aircraft was totally destroyed by impact forces.

The pilot was transporting six passengers on a scheduled revenue flight in instrument meteorological conditions. The pilot familiarized himself with the weather conditions before departure and surmised that he would be executing the instrument landing system (ILS) instrument approach for the landing runway at the destination airport. The operator prohibited approaches to runways less than 4,000 ft long if the tailwind component was 5 knots or more. The landing runway was 498 ft shorter than the operator-specified length. The pilot said he obtained the automated weather observing system (AWOS) data at least twice during the flight since he was required to obtain it before starting the instrument approach and then once again before he crossed the approach’s final-approach-fix (FAF). Though the pilot could not recall when he checked the AWOS, he said the conditions were within the airplane and company performance limits and he continued with the approach. A review of the wind data at the time he accepted the approach revealed the tailwind component was within limitations. As the airplane approached the FAF, wind speed increased, and the tailwind component ranged between 1 and 7 knots. Since the exact time the pilot checked the AWOS is unknown, it is possible that he obtained an observation when the tailwind component was within operator limits; however, between the time that the airplane crossed over the FAF and the time it landed, the tailwind component increased above 5 knots. The pilot said the approach was normal until he encountered a strong downdraft when the airplane was about 50 to 100 ft above the ground. He said that the approach became unstabilized and that he immediately executed a go-around; the airplane touched down briefly before becoming airborne again. The pilot said he was unable to establish a positive rate of climb and the airplane impacted trees off the end of the runway. The accident was captured on three airport surveillance cameras. A study of the video data revealed the airplane made a normal landing and touched down about 500 ft from the beginning of the runway. It was raining heavily at the time. The airplane rolled down the runway for about 21 seconds, and then took off again. The airplane entered a shallow climb, collided with trees, and caught on fire. All seven occupants were seriously injured and the airplane was destroyed.

En route from Kedrovy to Tomsk, while in cruising altitude, both engines failed. The crew reduced his altitude and attempted an emergency landing in the taiga. Upon impact, the aircraft overturned, slid for few dozen metres and came to rest upside down. The wreckage was found around 1430LT some 52 km southeast of Kedrovy. All 17 occupants were found alive, among them few were injured. The captain broke one of his leg. The aircraft was damaged beyond repair.

The aircraft departed Petropavlovsk-Kamchatsky Airport at 1257LT on a schedule service (flight PTK251) to Palana, carrying 22 passengers and a crew of six, among them Olga Mokhiriova, chief of the municipality of Palana. At 1439LT, the crew contacted Palana ATC and was cleared to start the descent at 1450LT. While completing an NDB approach to runway 29, the crew encountered marginal weather conditions with fog and ceiling at 300 metres. Too low, the aircraft impacted terrain about 4 km northwest of the airport. The wreckage was found in the evening on the top of a rocky wall. The aircraft disintegrated on impact and debris fall down on the sea bank. All 28 occupants were killed.

Coming from Juba, the twin engine airplane departed Pieri Airstrip on a short flight to Yuai (about 22 km southwest from Pieri) before returning to Juba, carrying eight passengers and two pilots. Shortly after takeoff, the aircraft stalled and crashed in an open field. The aircraft was totally destroyed by impact forces but there was no fire. All 10 occupants were killed.