Takeoff (climb)

The airplane collided with trees shortly after takeoff and came to rest in a church yard. There were no witnesses to the crash; however, several local residents heard the airplane overfly their homes at a low altitude. One resident stated that he heard the airplane collide with the trees. Another resident stated that he heard the engine operating as the airplane flew low overhead. Both residents reported that reduced visibility hampered their ability to find the wreckage. One resident estimated that the visibility was about 50 to 60 feet. The prescribed takeoff minimums for that airport is 300 feet and 1 mile visibility. Examination of the airplane did not disclose evidence of mechanical malfunction. The pilot, sole on board, was killed.

Shortly after takeoff from Tabora Airfield, while in initial climb, the twin engine aircraft encountered difficulties to gain height, stalled and crashed 130 metres past the runway end. All six occupants were injured.

The airplane crashed immediately after liftoff during a three-engine takeoff. Flightcrew had shortened rest break; rest periods not required for ferry flights. Flight crew fatigue from lack of rest, sleep, and disruption of circadian rhythms. Flightcrew did not have adequate, realistic training in three-engine takeoff techniques or procedures. Flight crew did not adequately understand three-engine takeoff procedures, including significance of vmcg. Flight engineer improperly determined vmcg speed, resulting in value 9 knots too low. During first takeoff attempt, captain applied power to asymmetrical engine too soon, was unable to maintain directional control, and rejected the takeoff. Captain agreed to modify procedure by allowing flight engineer to advance throttle, a deviation of prescribed procedure. FAA oversight of operator was inadequate because the poi and geographic inspectors were unable to effectively monitor domestic crew training and international operations. Existing far part 121 flight time limits & rest requirements that pertained to the flights that the flightcrew flew prior to the ferry flights did not apply to the ferry flights flown under far part 91. Current one-engine inoperative takeoff procedures do not provide adequate rudder availability for correcting directional deviations during the takeoff roll compatible with the achievement of maximum asymmetric thrust at an appropriate speed greater than ground minimum control speed. All three crew members were killed.

The charter flight was on a return tour trip after landing at the Grand Canyon National Park Airport. No fueling or maintenance was performed on the airplane while it sat on the ground for three hours. Shortly after takeoff from runway 21, the pilot transmitted that he had a problem and was declaring an emergency. He then stated '...I'm single engine right now....' The airplane was observed to be 100-200 feet above the terrain at the time. It continued flying for about 6 minutes, turning onto a crosswind, downwind, and then a right base leg for runway 21 before colliding with trees about 2.5 miles northeast of the airport. The airport is located in terrain that slopes upward from south to north and west to east. Winds were gusting to 29 knots. The density altitude was 6,870 feet. Examination of the suspect left engine did not reveal any evidence of failures or malfunctions. The investigation revealed deficiencies in the Federal Aviation Administration's oversight of the airline's maintenance program, and in the airline's extension of the time-in-service interval of the engines. The airline's AAIP does not require a maximum rated power check of the engines as required by the engine manufacturer's service instruction. In addition, the TBO of the engines had been extended from 1,800 to 2,400 hours.

Shortly after takeoff from Mangakino, while climbing, the single engine aircraft collided with power cables and crashed in a field. The pilot was injured.

After landing at Cafunfo Airport and while taxiing to the ramp, the crew heard several explosions outside the airport as UNITA rebels were approaching the airstrip. In such conditions, the crew decided to return to Luanda and expedited a takeoff. After departure, while climbing, the twin engine aircraft was hit by a Stinger missile that struck the right engine. The crew lost control of the airplane that crashed few km from the airport, bursting into flames. Two passengers were killed while four other occupants were injured.

During the takeoff roll from Sambailo Airport, at a speed of 180 km/h, the pilot-in-command realized he could not takeoff so he initiated an emergency braking procedure. As a distance of 350 metres was remaining, the aircraft was unable to stop within the distance, overran and came to rest. All 24 occupants escaped unhurt.

The pilot-in-command stated that shortly after takeoff, when the airplane was about 150 feet above the ground over a stand of trees, the left engine lost power. The pilots made a hard forced landing in a field, skidded and came to a stop against a farm building. The power loss occurred over a wooded area. Postaccident examination revealed the left engine driven fuel pump shaft had failed. Airplane records indicated the most recent maintenance occurred in november 1991. The airplane had flown 148 hours since that date.

During the takeoff roll at Karachi-Quaid-e-Azam Airport, at a speed of 270-280 km/h, the pilot-in-command pulled up on the control column to start the rotation but the aircraft failed to respond. The crew decided to abandon the takeoff procedure and initiated an emergency braking procedure. Unable to stop within the remaining distance, the aircraft overran, rolled for about 500 metres then lost its nose gear and came to rest. All 117 occupants escaped uninjured while the aircraft was damaged beyond repair.

After liftoff from runway 30 at Krasnoyarsk-Iemilianovo Airport, while climbing at a speed of 165 km/h, the aircraft encountered difficulties to gain height. It collided with 25 metres tall trees located about 1,000 metres past the runway end, rolled to the right and crashed in a wooded area, some 450 metres to the right of the extended centerline. Both pilots and a passenger were killed.