NTSB Identification: ANC97FA037A
Accident occurred Tuesday, March 25, 1997 in NUNAPITCHUK, AK
Probable Cause Approval Date: 05/29/1998
Aircraft: Short Brothers SC7, registration: N451SA
Injuries: 2 Fatal.
NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.
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 National Transportation Safety Board determines the probable cause(s) of this accident to be: inadequate visual look-out by the pilots of both airplanes, which resulted in their failure to see-and-avoid each other's airplanes. Full narrative available
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