Government

During the takeoff roll at Vorkuta, the left engine suffered a hydraulic failure. The crew lost control of the aircraft that deviated to the left, veered off runway and came to rest, bursting into flames. All 34 occupants escaped uninjured while the aircraft was destroyed.

The twin engine aircraft departed Chandigarh Airport at 0850LT on a flight to Kulu-Bhuntar, carrying eight passengers and three crew members, among them Surendra Nath, Governor of Punjab and Himachal Pradesh along with his family members. While in cruising altitude, the crew encountered limited visibility due to cumulus when the aircraft struck trees and rocks and crashed on the slope of a mountain located in the Kamrunag Mountain Range, about 18,5 km southeast of Sundar Nagar, some 50 km south of Kulu-Bhuntar Airport. The aircraft was destroyed and all 11 occupants were killed.

The aircraft was returning to Kigali after an official flight from Dar es Salaam, carrying members of Rwanda and Burundi government, among them both Presidents, who took part to a congress in Tanzania and ratified the Arusha Agreements. On short final to Kigali-Grégoire Kayibanda Airport runway 28, at a height of about 100 metres, the aircraft was struck by a SAM16 surface-to-air missile and crashed in the garden of the Presidency Residence, about 500 metres from the Kanombe Camp. The wreckage was found 1,850 metres short of runway 28. The aircraft disintegrated on impact and all 12 occupants were killed.
Crew:
Jacky Héraud, pilot,
Jean-Pierre Minaberry, copilot,
Jean-Michel Perrine, flight engineer.
Passengers:
Juvénal Habyarimana, President of the Republic of Rwanda,
General Déogratias Nsabimana, Chief of Staff of the Rwanda Armed Forces,
Major Thaddée Bagaragaza, orderly officer for President Habyarimana,
Colonel Elie Sagatwa, personnel secretary of President Habyarimana,
Ambassador Juvénal Renzaho, political affairs counselor to the presidency,
Dr Emmanuel Akingeneye, personnel doctor or President Habyarimana,
Cyprien Ntaryamira, President of the Republic of Burundi,
Bernard Ciza, Minister of Communication olf Burundi,
Cyriaque Simbizi, Minister of Planning of Burundi.

The public use flight was being operated by the Indian Health Service of the U.S. Department of Health & Human Services. It departed VFR from Devils Lake, North Dakota, with an intended destination of Rolla, North Dakota. The pilot attempted two visual approaches at Rolla, but encountered whiteout conditions due to a snow storm. He obtained an IFR clearance and diverted to Minot. He flew two ILS approaches to runway 31 at Minot and reported a missed approach after each. Radio contact was lost after the second approach. About an hour later, a snow plow operator found wreckage on the airport. Investigation revealed the plane had impacted to the right of runway 31 with the gear retracted and the flaps extended 15°. The 0959 weather was in part: 600 feet obscured, visibility 1/2 mile variable in snow, wind 110° at 11 knots. No preimpact mechanical anomaly was found with the airplane or engines. All four occupants were killed.

After landing at Ipoh-Sultan Azlan Shah Airport, the twin engine aircraft veered off runway to the right, lost its undercarriage and came to rest near the fire brigade building. All six occupants escaped uninjured while the aircraft was damaged beyond repair.

The two pilots were transporting Hydro-Québec employees in the aircraft to allow them to check electrical facilities in several villages along the Hudson Bay coast. The aircraft departed
Kuujjuarapik, Quebec, at about 1444 eastern standard time (EST) on a flight to Umiujaq, Quebec, a distance of 86 nautical miles (nm) to the north. The pilot-in-command was flying the aircraft. After the take-off from Kuujjuarapik, the crew contacted the Kuujjuarapik Flight Service Station (FSS) to file a flight notification and request weather information. The crew received three weather reports for Umiujaq from that FSS. The flight was conducted at an altitude of 5,000 feet on an outbound track of 045 degrees from the Kuujjuarapik non-directional beacon (NDB). Thirty miles from Umiujaq, the crew commenced the descent. Seven miles from the village, the aircraft was at an altitude of 700 feet and the crew could see the ground. The crew used a global positioning system (GPS) waypoint to supplement visual navigation (before reaching a downwind position), and continued their step-down procedure to about 200 feet above ground level (agl) on a heading of 25 degrees magnetic (°M). At that altitude, the visibility was reported by the crew to be over one and one-half miles and the crew could recognize references on the ground and position the aircraft for landing. When turning onto the final approach to runway 21, the pilot-in-command initiated a turn with at least 35 degrees of bank angle, and the aircraft stalled. The pilot-in-command initiated a stall recovery and called for full power. The aircraft did not gain sufficient altitude to overfly the rising terrain, and it crashed. The two crew members and two of the passengers sustained minor injuries. They were given first aid treatment at the accident site by other passengers.

Shortly after takeoff from Bogotá-El Dorado Airport, while climbing, the crew informed ATC about the failure of the left engine and was cleared to return for an emergency landing. While turning to the left, the aircraft stalled and crashed on a building housing a car dealership. All seven occupants on board the Cessna as well as six people on the ground were killed, among them the Director and the Deputy Director of the Civil Aviation Authority of Colombia. Seven other people on the ground were injured.

While cruising at FL240, a propeller (prop) hub arm on the left prop failed, releasing the prop blade, which struck a 2nd blade, breaking off its tip. This resulted in a severe engine vibration and shutdown of the left engine. The left engine was forced downward and inboard on its mounts. The cabin depressurized, possibly from blade contact. The flight crew made an emergency descent and received a vector to divert for an ILS approach to Dubuque. The airplane was incapable of maintaining altitude and descended in instrument conditions. Subsequently, it collided with a silo and crashed about 8 miles south of Dubuque. An investigation revealed the left prop hub failed from fatigue that initiated from multiple initiation sites on the inside diameter surface of the hole for the pilot tube. There was evidence that the fatigue properties of the hub were reduced by a combination of factors, including machining marks or scratches, mixed microstructure, corrosion, decarburization, and residual stresses. All eight occupants were killed, among them George Mickelson, 52, Governor of South Dakota.

During descent into Billings, the Citation was sequenced behind a Boeing 757, and both airplanes were eventually cleared for visual approaches. About 1-1/2 mile from the runway the Citation was observed to roll rapidly to the inverted position and descended almost vertically into the ground. According to ATC transcripts and the airplane's cockpit voice recorder, the crew of the Citation had maintained visual awareness of the position of the B757 throughout the approach. At the time of the upset, the vertical separation between airplanes was 600 - 1,000 feet, and the horizontal separation was decreasing below 2.6 miles. One of the Citation captain's last comments was 'almost ran over a seven fifty seven.' Winds were 5 knots. All eight occupants were killed.

The twin engine aircraft was completing a flight on behalf of the Attorney General of the Republic, carrying seven passengers and two pilots. After takeoff from Monterrey-General Mariano Escobido Airport, while climbing, the crew reported 3,000 feet when the aircraft entered an uncontrolled descent and crashed in a field located 4 km from the airport. The aircraft crashed one minute after a night takeoff. All nine occupants were killed.