Aviation Accident Summaries

Aviation Accident Summary ANC89LA156

SHEENJEK RIVER, AK, USA

Aircraft #1

N17689

de Havilland DHC-3

Analysis

THE PLT RPRTD THAT AS THE ACFT WAS ON A SHORT FINAL APCH TO LAND ON A GRAVEL BAR, IT ENCOUNTERED A DOWNDRAFT. TO AVOID CONTACTING THE WATER, HE CORRECTED WITH ELEVATOR CONTROL & POWER, BUT THE ACFT GAINED MORE ALTITUDE THAN HE DESIRED. SUBSEQUENTLY, IT TOUCHED DOWN ON THE GRAVEL BAR BEYOND THE INTENDED TOUCHDOWN POINT. AS THE PLT WAS APPLYING HEAVY BRAKING TO STOP ON THE GRAVEL BAR, THE WHEELS DUG INTO THE SANDY TERRAIN & THE ACFT NOSED OVER.

Probable Cause and Findings

FAILURE OF THE PILOT TO GO AROUND WHEN HE WAS UNABLE TO ATTAIN THE PROPER TOUCHDOWN POINT AND HIS EXCESSIVE APPLICATION OF BRAKES DURING THE LANDING. CONTRIBUTING FACTORS WERE: THE DOWNDRAFT, EXCESSIVE REMEDIAL ACTION, AND SOFT TERRAIN.

 

Source: NTSB Aviation Accident Database

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