NTSB Identification: SEA92LA025.
The docket is stored on NTSB microfiche number 46449.
Scheduled 14 CFR
Accident occurred Sunday, December 01, 1991 in MISSOULA, MT
Probable Cause Approval Date: 04/23/1993
Aircraft: SWEARINGEN SA-227-AC, registration: N26932
Injuries: 18 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE PILOT WAS UNABLE TO MAINTAIN DIRECTIONAL CONTROL AS THE AIRCRAFT DRIFTED OFF THE LEFT SIDE OF THE DEPARTURE RUNWAY, WHICH HAD AN ACCUMULATION OF SNOW. THE INABILITY TO MAINTAIN DIRECTIONAL CONTROL AT HIGH SPEED WAS CONSISTENT WITH AA DRAGGING BRAKE ON THE LEFT SIDE OF THE AIRCRAFT.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

THE PILOT'S INABILITY TO MAINTAIN DIRECTIONAL CONTROL DURING TAKEOFF. FACTORS INCLUDE A DRAGGING BRAKE.

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