Bethel, AK, USA
N454SF
Cessna 208B
The airline transport pilot was planning to land on an asphalt runway that had localized drifting and blowing snow. Instead, the airplane touched down in a snow-covered area of the airport between the runway and the adjacent taxiway. The pilot said that blowing snow and flat lighting conditions contributed to his difficulty in discerning the correct location of the runway. He said he "aimed for the darker area between the runway and the taxiway, believing this was the runway." The director of operations for the operator said that the depression between the runway and the taxiway had been filled with snow by runway maintenance personnel during snow removal operations. He indicated that the area had the illusion of a hard surface, but landing during reduced visibility due to blowing snow required the pilot to take advantage of any and all available resources, such as requesting the activation of the runway lights, and/or using the instrument landing system (ILS) localizer as a means of aligning the airplane with the centerline of the runway.
On January 15, 2008, about 1439 Alaska Standard time, a Cessna 208B airplane, N454SF, sustained substantial damage when it collided with snow-covered terrain during the landing flare at the Bethel Airport, Bethel, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country air medical flight under Title 14, CFR Part 135, when the accident occurred. The airplane was operated by Grant Aviation Inc., Anchorage, Alaska. The airline transport certificated pilot, a paramedic passenger, and two medical patients/passengers, were not injured. A second paramedic passenger received minor injuries. Visual meteorological conditions prevailed, and VFR company flight following procedures were in effect. The flight originated at the Sheldon Point Airport, Sheldon Point, Alaska, about 1315. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on January 15, the director of operations for the operator reported that the pilot was planning to land on runway 18 at Bethel. Instead, the airplane touched down in a snow-covered area of the airport, between the runway and the adjacent taxiway, collapsing the nose landing gear. On January 17, the director of maintenance for the operator reported that the airplane sustained structural damage to the firewall and forward fuselage bulkhead. At 1437, a special weather observation at Bethel was reporting, in part: Wind, 160 degrees (true) at 17 knots; visibility, 10 statute miles; clouds and sky condition, 1,400 feet scattered, 2,900 feet scattered, 3,500 feet broken; temperature, 30 degrees F; dew point, 27 degrees F; altimeter, 29.36 inHg; remarks, occasional localized low drifting snow and blowing snow. In the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1) submitted by the operator, the pilot reported that during the landing approach, blowing snow and flat lighting conditions contributed to his difficulty in discerning the correct location of the runway. He said he "aimed for the darker area between the runway and the taxiway, believing this was the runway." In the "Recommendation (How could this accident have been prevented)" portion of the NTSB Form 6120.1, the director of operations said that the depression between the runway and the taxiway had been filled with snow by runway maintenance personnel during snow removal operations. He indicated that the area had the illusion of a hard surface, and landing during reduced visibility due to blowing snow required the pilot to take advantage of any and all available resources to ensure a successful outcome. He suggested that pilots could request air traffic control tower (ATC) personnel to activate the runway lighting, and the pilot could also use the instrument landing system (ILS) localizer as a means of aligning with the centerline of the runway.
The pilot's selection of unsuitable terrain for landing. Contributing to the accident were snow-covered terrain, blowing snow and flat lighting conditions.
Source: NTSB Aviation Accident Database
Aviation Accidents App
In-Depth Access to Aviation Accident Reports
