Takeoff (climb)

The captain reported: 'Shortly after V1...there was a loss of power to the left engine....' (FAR Part 1 defines V1 as takeoff decision speed.) However, the first officer, who was the pilot flying, stated the captain retarded power on the left engine as a training exercise. The first officer stated there was no preflight discussion of emergency procedure practice. The airplane became airborne about 3,500 feet down the runway; the crew subsequently lost control of the aircraft, and it crashed to the left of the runway, and a fire erupted. The crew escaped with minor injuries. A teardown of the left engine was performed under FAA supervision at the engine manufacturer's facilities; the engine manufacturer reported that damage found during the teardown 'was indicative of engine rotation and operation at the time of impact....' Both airspeed indicator bugs were found set 9 to 11 knots below the V1 speed on the takeoff and landing data (TOLD) card. No evidence of an aircraft or engine malfunction, to include inflight fire, was found at the accident site.

During the takeoff roll, the twin engine aircraft struck a dip, causing a propeller to struck the ground and the aircraft to lose power and speed. Unable to take off, the aircraft veered off runway to the left, went through three fences, crossed a dirt road and came to rest in an open field. All seven occupants were rescued, among them one was slightly injured. The aircraft was dispatched in Steynsburg to enable five forensic experts and detectives to conduct an investigation of suspected arson, as the Grand Hotel at the town was destroyed by fire.

Just after liftoff from runway 06, while in initial climb, the aircraft stalled and sank back on the runway. It skidded for few dozen metres, overran and came to rest 300 metres further, bursting into flames. Three crew members were killed while four others were seriously injured.

During the airplane's takeoff roll, about 3/4 down the 3,700 foot runway, a witness reported that the color of the #1 exhaust flame changed from blue to yellow, accompanied by an audible change in the engine power level. The nose of the airplane yawed left and the left wing dipped. Directional control was regained and the takeoff continued. Skid marks were found about 650 feet before the departure end of the runway that continued about 1360 feet to an abandoned grocery store impacted by the plane. About 315 feet before the building, the left wing contacted a privacy fence, and a utility pole, resulting in a fire at the disrupted left wing main fuel tank. A pilot/mechanic who helped dispatch the airplane observed that the elevator was free as it taxied. Fire damage to all engines precluded a detailed post crash examination of essential fuel and ignition systems. The toxicological report regarding the second pilot indicated that 1.110 mcg/ml (ug/ml, ug/g) of Diphenhydramine, was detected in the blood. According to NTSB medical personnel, Diphenhydramine is a sedating antihistamine often found in over-the-counter allergy medications. A single oral dose of medication containing Diphenhydramine, at twice the recommended maximum of over-the-counter dosage, resulted in maximal blood levels of between 0.08 and 0.16 mcg/ml. The level of Diphenhydramine found during the toxicology examination of the second pilot approximated ten times the levels found following a dosage at twice the recommended strength. Diphenhydramine was also found in the urine. Additional prescription and nonprescription medications were also found during the toxicological examination of the second pilot.

During the takeoff roll, the captain heard a noise and suspected a technical problem so he decided to abandon the takeoff procedure. Unable to stop within the remaining distance, the aircraft overran and struck an embankment. All 14 occupants escaped uninjured while the aircraft was damaged beyond repair. It was reported that the crew initiated the takeoff in an up-slope configuration while the takeoffs at Tshikapa Airport are normally completed in a down-slope configuration. The runway is 1,000 metres long.

The pilot of Cessna 207A, N800GA, was returning to his company base, passing about 2 miles north of a remote airstrip that was along the route of flight. The airstrip did not have any control tower. [Communications around an uncontrolled airport are conducted on a common traffic advisory frequency (CTAF)]. The pilot of a Short SC7, N451SA, announced his departure from the same airstrip on the CTAF, and took off in a northerly direction. He then began a climbing right turn toward the same destination as the Cessna 207A was proceeding. The two airplanes collided in mid-air, about 1.49 nautical miles east-northeast of the airstrip, which was about 18.3 miles west of their destination. They were observed spiraling downward from about 800 ft above the ground. Both airplanes were found lying flat and upright on a frozen lake, entangled together at the accident site. The Cessna's burned wreckage was lying on top of (and positioned toward the aft third of) the burned wreckage of the Short SC7.

The pilot of Cessna 207A, N800GA, was returning to his company base, passing about 2 miles north of a remote airstrip that was along the route of flight. The airstrip did not have any control tower. [Communications around an uncontrolled airport are conducted on a common traffic advisory frequency (CTAF)]. The pilot of a Short SC7, N451SA, announced his departure from the same airstrip on the CTAF, and took off in a northerly direction. He then began a climbing right turn toward the same destination as the Cessna 207A was proceeding. The two airplanes collided in mid-air, about 1.49 nautical miles east-northeast of the airstrip, which was about 18.3 miles west of their destination. They were observed spiraling downward from about 800 ft above the ground. Both airplanes were found lying flat and upright on a frozen lake, entangled together at the accident site. The Cessna's burned wreckage was lying on top of (and positioned toward the aft third of) the burned wreckage of the Short SC7.

During the takeoff roll on runway 31 at Abu Dhabi Airport, just before V1, the aircraft started to vibrate and longitudinal control was lost. The captain decided to abandon the takeoff procedure and initiate an emergency braking manoeuvre. Unable to stop within the remaining distance, the aircraft overran, lost its nose gear and came to a halt few dozen metres further. On impact, the cockpit and both engines were almost destroyed and the left wing broke in two.

About two minutes into the flight, the pilot noticed a high cylinder head temperature on the right engine. The pilot opened the cowl flap doors and the cylinder head temperature dropped 200 degrees. When the pilot noticed a reduction in right engine power, he elected to shut down the engine. The copilot was instructed to secure the right engine in accordance with the emergency procedures. Unable to maintain altitude, the pilot selected an emergency landing to a large open field, and the landing gear collapsed during the landing. Examination of the airplane at the accident site disclosed that the engine cowl flaps on both engines were in the open position. Examinations of the right engine subsystems failed to disclose a mechanical malfunction or component failure. A review of the normal and emergency procedures for the aircraft disclosed that the cowl flaps normal position for the shutdown engine is closed. A review of the aircraft performance data revealed that the airplane was capable of maintaining flight and a climb attitude with one engine. There was no cargo on the airplane. During the pilot's subsequent type rating reexamination in the Convair 240-27, the pilot failed to demonstrate a satisfactory level of knowledge in emergency procedures during the oral examination. The pilot subsequently surrendered the Convair 240-27 type rating to the FAA.

After takeoff from Pereira-Matecaña Airport, while climbing, the copilot declared an emergency and reported problems. Shortly later, the aircraft entered an uncontrolled descent and crashed near La Felisa. The aircraft was destroyed and both pilots were killed.