Cessna 421B Golden Eagle II

The private pilot of the twin-engine airplane departed on the personal flight. During the takeoff roll, all indications were normal. When the airplane accelerated to between 75 and 80 knots, the pilot pulled back on the yoke slowly, and the airplane began to climb. After he raised the landing gear, the pilot noticed that the airplane was not continuing to climb and that the airspeed was 80 knots; he then heard the stall warning horn. The airplane impacted trees about 1/4 mile from the runway, caught fire, and was destroyed; the pilot egressed with minor injuries. The airplane's published minimum control speed was 86 knots and the break ground and climb speed was 106 knots. Given that information, it is likely that the pilot's attempt to rotate and climb the airplane below 80 knots resulted in the airplane being unable to gain altitude and climb above trees at the end of the runway.

While flying by night, the twin engine airplane crashed under unknown circumstances in the lake of Maracaibo and came to rest few dozen metres off Sabaneta de Palmas. There were no casualties but the aircraft was damaged beyond repair.

The twin-engine airplane, flown by a commercial pilot, was departing on a business flight from runway 31 when the right engine lost power. According to a pilot-rated witness, the airplane was about halfway down the 6,500 ft runway at an altitude of about 100 ft above ground level when he heard a "loud pop" and then saw the airplane's right propeller slow. The witness reported that the airplane yawed to the right and then began a right turn toward runway 18 with the right engine's propeller windmilling. The witness further reported that the airplane cleared a tree line by about 150 ft, rolled right, descended straight down to ground impact, and burst into flames. Postaccident examination of the airplane's right engine revealed that the crankshaft was fractured adjacent to the No. 2 main bearing, which had rotated. The crankcase halves adjacent to the No. 2 main bearing were fretted where the case through-studs were located. The fretting of the mating surfaces was consistent with insufficient clamping force due to insufficient torque of the through-stud nuts. Records indicated that all six cylinders on the right engine had been replaced at the airplane's most recent annual inspection 8 months before the accident. In order to replace the cylinders, the through-stud nuts had to be removed as they also served to hold down the cylinders. It is likely that when the cylinders were replaced, the through-stud nuts were not properly torqued, which, over time, allowed the case halves to move and led to the bearing spinning and the crankshaft fracturing. During the accident sequence, the pilot made a right turn in an attempt to return to the airport and did not feather the failed (right) engine's propeller, allowing it to windmill, thereby creating excessive drag. It is likely that the pilot allowed the airspeed to decay below the minimum required for the airplane to remain controllable, which combined with his failure to feather the failed engine's propeller and the turn in the direction of the failed engine resulted in a loss of airplane control.

The twin engine aircraft, operated by STS Avijacija (STS Aviation), departed Banja Luka on a charter flight to Tuzla, carrying two passengers and one pilot taking part to a foxes vaccination program. While cruising at low altitude, the airplane entered an area of clouds when it impacted trees and crashed on the slope of a mountain located near the Monastery of Ozren, southeast part of the Serbian Republic of Bosnia, bursting into flames. Both passengers were seriously injured and the pilot was killed.

The private pilot reported that he was approaching the airport for landing in the multi-engine airplane when both engines began to surge. The pilot attempted to switch to the auxiliary fuel tanks, but inadvertently switched the left engine fuel selector to the off position. The left engine subsequently experienced a total loss of engine power. On final approach for landing, the airplane impacted terrain and was subsequently consumed by a postimpact fire; the fuel onboard the airplane at the time of the accident could not be determined. An examination of the airplane's engines and systems revealed no mechanical anomalies that would have precluded normal operation.

The twin engine aircraft was performing a flight from Abbotsford to Tofino with two people on board (a father aged 51 and his son aged 25). On approach to Tofino Airport, on Vancouver Island, the aircraft impacted ground and crashed on Vargas Island, off Tofino. The burnt wreckage was found the following day and both occupants were killed.

En route from Cuernavaca to Guadalajara, while in cruising altitude, the pilot informed ATC about technical problems with the right engine. He was cleared to divert to Morelia Airport for an emergency landing. On final approach to runway 05, the twin engine aircraft crashed in an open field located about 2 km short of runway. All six occupants evacuated with minor injuries and the aircraft was damaged beyond repair.