NTSB Identification: SEA91LA106.
The docket is stored on NTSB microfiche number 43924.
Accident occurred Thursday, May 16, 1991 in RAWLINS, WY
Probable Cause Approval Date: 03/31/1993
Aircraft: BEECH A36, registration: N6724T
Injuries: 2 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 OF THE BEECH A36 WAS FLYING ON TOP OF AN OVERCAST WHEN HE NOTED THAT THE READINGS ON HIS ENGINE GAUGES WERE DROPPING. HE DETERMINED THAT THE ALTERNATOR HAD FAILED AND WAS UNSUCCESSFUL IN HIS ATTEMPT TO USE THE STANDBY GENERATOR. HE THEN DEAD-RECKONED TO A LET-DOWN THROUGH THE CLOUDS AT RAWLINS, WY, AND LANDED SHORT OF THE RUNWAY WHEN HE BELIEVED THAT THE ENGINE WAS NOT PRODUCING ADEQUATE POWER.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: THE PILOT'S LACK OF FAMILIARITY WITH THE AIRCRAFT, HIS LACK OF UNDERSTANDING OF THE ELECTRICAL SYSTEM, AND A PREMATURE PRECAUTIONARY LANDING. CONTRIBUTING TO THE ACCIDENT WERE AN ALTERNATOR FAILURE AND THE RESULTANT FALSE READINGS OF THE POWERPLANT INSTRUMENTS.
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