NONE · HILLER UH-12E · 1991-05-04 · DELANO, CA, USA
Event
NTSB number
LAX91LA191
Event ID
20001212X17025
Type
Accident
Date
1991-05-04
Location
DELANO, CA, USA
Coordinates
35.780582, -119.230796
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
1
Total aboard
1
Aircraft
Make
HILLER
Model
UH-12E
Registration
N4414
FAR Part
137
Engines
1
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
THAT THE PILOT IMPROPERLY PERFORMED THE AUTOROTATION BY MISJUDGING THE FLARE ALTITUDE. CONTRIBUTING TO THIS ACCIDENT WAS THE TOTAL FAILURE OF THE FREEWHEELING SPRAG CLUTCH DUE TO EXCESSIVE WEAR AND THE SOFT DIRT TERRAIN.