PenAir flight 350
| PenAir flight 350 | |
|---|---|
 A similar machine from Kenmore Air |
|
| Accident summary | |
| Accident type | Stopped flow at takeoff due to icing |
| place |
Dillingham Airport , Alaska , United States
|
| date | October 10, 2001 |
| Fatalities | 10 |
| Survivors | 0 |
| Aircraft | |
| Aircraft type |
Cessna 208 Caravan
|
| operator |
PenAir
|
| Mark |
N9530F
|
| Departure airport |
Dillingham Airport , Alaska , United States
|
| Destination airport |
King Salmon Airport , Alaska , United States
|
| Passengers | 9 |
| crew | 1 |
| Lists of aviation accidents | |
The PenAir flight 350 (flight number: KS350 ) was a domestic scheduled flight of PenAir in the US state of Alaska , which should lead from Dillingham Airport to King Salmon Airport . On October 10, 2001, a Cessna 208 Caravan crashed shortly after take-off due to icing on this flight , killing all ten people on board.
plane
The machine was a 1986 Cessna 208 Caravan , which was registered on January 6, 1987 with the registration number N9350F for Business Air belonging to the Cessna Finance Corporation . On April 24, 2007 the machine was approved for the PenAir. The single-engine commuter aircraft was equipped with a turboprop engine of the type Pratt & Whitney Canada PT6A-114A equipped with 505 kW (675 hp), which with a three-bladed, adjustable Hartzell was equipped -propeller. By the time of the accident, the machine had completed a total of 10,080 operating hours.
Inmates
The flight from Dillingham Municipal Airport to King Salmon Airport had taken nine passengers. A 41-year-old pilot was the only crew member on board. He had been flying for PenAir since October 16, 2000 and since then had completed 869 flight hours. He had a total of 3,100 hours of flight experience.
the accident
The night of October 10th was the first winter temperature in the Dillingham area of the year. The thermometer steadily dropped to about −4 ° C. The Cessna 208 Caravan N9530F was parked outside all night and was exposed to rain and snow. Ice accumulations formed on the machine. Due to the wintry conditions, the ramp personnel de-ice the aircraft with a heated mixture of glycol and water. The plane took off and the machine rose to about 200 meters when suddenly the angle of attack of the Cessna increased, the machine rolled 90 degrees to the left and then yawed to the left. The aircraft then fell to the ground with the aircraft's nose until it hit down in a level flight attitude and a flight path angle of approximately 40 degrees.
root cause
The PenAir ramp manager who carried out the de-icing was questioned about the accident. He stated that he believed the top of the wing was free of ice, but did not touch it to check for icing. The investigators could not determine whether the accident pilot had inspected the wing and tail unit tops after the aircraft involved in the accident had been de-iced or had checked for icing by touching it.
The accident investigation revealed that there had been a loss of control during the flight due to ice accumulation on the upper side of the wing. During his pre-flight inspection of the aircraft, the pilot-in-command had not checked the top of the wing for icing thoroughly enough. Contributing to the accident was the lack of relevant regulations, which oblige pilots of Cessna 208 Caravan machines to check the upper sides of the wings of machines thoroughly and at close range for ice accumulation in icing conditions.