NTSB Identification: SEA82FA163
Nonscheduled 14 CFR Part 135: Air Taxi & Commuter
Accident occurred Tuesday, September 14, 1982 in MAHONEY CREEK, ID
Probable Cause Approval Date: 09/14/1983
Aircraft: de Havilland DHC-II, registration: N5157G
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 ACFT WAS OBSERVED FLYING OVER THE STRIP IN WHAT APPEARED TO BE A NORMAL DOWNWIND PATTERN. IT CRASHED ABOUT 300 FT BELOW WINDY RIDGE ON THE NORTHWEST FACE. THE AUTOPSY REPORT INDICATED THE PLT HAD A "PATCHY HEALED MYOCARDIAL INFARCT" PRIOR TO THE ACCIDENT. MICROSCOPIC EXAMINATION SUPPORTED OCCLUSIVE CORONARY ARTERIOSCLEROSIS, LEFT CORONARY ARTERY. THE PLT HAD BEEN UNDER A STRESS PROGRAM & TAKING MEDICATION FOR HIGH BLOOD PRESSURE.

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

AIRCRAFT HANDLING..UNCONTROLLED..PILOT IN COMMAND

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

INCAPACITATION(OTHER CARDIOVASCULAR)..PILOT IN COMMAND

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