Plain, Valley

Crashed in unknown circumstances in bushes near Cobán, Guatemala, while engaged in an illegal flight. The aircraft was damaged beyond repair and no one was found on the scene. The registration seems to be false.

The aircraft crashed in unknown circumstances in a snow covered field located in Ostrogozhsk. Russian Authorities reported that all occupants were killed.

The aircraft crashed in an open field located in Zhukivtsi, about 30 km south of Kiev-Borispol Airport. It is believed there were 14 people on board and that five of them were killed. Maybe the aircraft was shot down by Russian Forces that entered Ukraine territory few hours earlier.

En route, the pilot encountered engine problems and elected to make an emergency landing on a motorway. Upon landing, the aircraft impacted the road bank, lost its left wing and came to rest. All six occupants evacuated with minor injuries and the aircraft was damaged beyond repair.

Shortly after takeoff from Koryaki, en route to Tymlat, the crew lost control of the airplane that crashed in a wooded and snow covered area located one km from Koryaki, bursting into flames. The aircraft was totally destroyed by a post crash fire and both pilots were killed.

The aircraft departed Goma on a cargo flight to Shabunda, carrying two conveyors and three crew members. On approach to Shabunda Airport, the crew encountered poor weather conditions when the arcraft crashed 15 km from the airport. All five occupants were killed.

The single engine airplane departed Houston-George Bush-Intercontinental Airport at 0910LT on a cargo service to Victoria. Twelve minutes later, while climbing to an altitude of 4,200 feet, the aircraft collided with a paraglider. Out of control, it entered a dive and crashed three minutes later in a field. The aircraft was totally destroyed and the pilot, sole on board was killed, as well as the paraglider.

The company pilot and two employees had departed on an aerial imagery survey flight of forest vegetation. The airplane began to level off at an altitude of about 16,100 ft mean sea level (msl) and accelerated to a maximum recorded groundspeed of 209 knots. Less than 2 minutes later, the groundspeed decreased to about 93 knots, and the airplane descended about 500 ft while on a steady heading. The airplane subsequently entered a rapid descent and a right turn, and “mayday, mayday, mayday” and “we’re in a spin” transmissions were broadcast to air traffic control (ATC). A witness, who was located near the accident site, noticed the airplane nose down at high rate of speed and then saw the airplane spinning rapidly about its longitudinal axis. The airplane wreckage was located in remote wetlands and wooded terrain. Postaccident examination revealed that the airplane impacted the ground in a nose-low vertical attitude and at high speed. All major components of the airplane were located at the accident site. Examination of the airframe, engines, and propellers revealed no preimpact mechanical malfunctions or failures that would have precluded normal operation. According to the aircraft performance study for this accident, when the airplane pitched down, the normal load factor decreased rapidly from about 1.6 to less than 1 G. A rapid decrease in normal load factor is consistent with a stall when the wing exceeds its critical angle of attack. At that point, the air flow becomes separated at the wing, and the wing can no longer generate the necessary lift. If the airplane is in uncoordinated flight at the stall, a spin can result. Thus, the pilot likely did not maintain adequate airspeed, causing the airplane to exceed its critical angle of attack and enter a stall and spin. An important but unknown factor before and during the initial stall was the behavior of the pilot regarding his flight control inputs, including his possible attempt to recover. The airplane’s Pilot Operating Handbook states that spins are not authorized and does not include a procedure for inadvertent spin recovery.

The pilot was performing a short cross-country flight, which was his third solo flight in the high-performance single-engine airplane. The airplane departed and climbed to 20,000 ft mean sea level (msl) before beginning to descend. About 8 minutes before the accident, the airplane was southbound, descending to 11,000 ft, and the pilot established communications with air traffic control (ATC). About 4 minutes later, the controller cleared the pilot to descend to 10,000 ft msl and proceed direct to his destination; the pilot acknowledged the clearance. While descending through 13,000 ft msl, the airplane entered a descending left turn. The controller observed the left turn and asked the pilot if everything was alright; there was no response from the pilot. The controller’s further attempts to establish communications were unsuccessful. Following the descending left turn, the airplane entered a high speed, nose-down descent toward terrain. A witness observed the airplane at a high altitude in a steep nose-down descent toward the terrain. The witness noted no signs of distress, such as smoke, fire, or parts coming off the airplane, and he heard the airplane’s engine operating at full throttle. The airplane impacted two powerlines, trees, and the terrain in a shallow descent with a slightly left-wing low attitude. Examination of the accident site revealed a long debris field that was consistent with an impact at a high speed and relatively shallow flightpath angle. All major components of the airplane were located in the debris field at the accident site. Examination of the airframe and engine revealed no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. A performance study indicated the airplane entered a left roll and dive during which the airplane exceeded the airspeed, load factor, and bank angle limitations published in the Pilot’s Operating Handbook (POH). An important but unknown factor during these maneuvers was the behavior of the pilot and his activity on the flight controls during the initial roll and dive. The pilot responded normally to ATC communications only 98 seconds before the left roll started. It is difficult to reconcile an alert and attentive pilot with the roll and descent that occurred, but there is insufficient information available to determine whether the pilot was incapacitated or distracted during any part of the roll and dive maneuver. Although all the available toxicological specimens contained ethanol (the alcohol contained in alcoholic drinks such as beer and wine), the levels were very low and below the allowable level for flight (0.04 gm/dl). While it is possible that some of the identified ethanol had been ingested, it is also possible that all or most of the identified ethanol was from sources other than ingestion (such as postmortem production). In either case, the levels were too low to have caused incapacitation. It is therefore unlikely that any effects from ethanol contributed to the circumstances of the accident. There was minimal available autopsy evidence to support any determination of incapacitation. As a result, it could not be determined from the available evidence whether medical incapacitation contributed to the accident.

The single engine aircraft departed Jigjiga Airport on a humanitarian mission to Dire Dawa, carrying two pilots and two employees of the World Food Program. En route, the crew encountered an unexpected situation and was forced to attempt an emergency landing. Upon landing, the aircraft came to rest on its nose in a near vertical position with its right wing partially torn off. All four occupants escaped with minor injuries.