Pilot Debrief

ROBINSON HELICOPTER COMPANY R44 II near Cedar City, UT — 2022-07-25

Final reportWPR22LA267
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Date
2022-07-25
Location
Cedar City, UT, USA
Aircraft
ROBINSON HELICOPTER COMPANY R44 II
Registration
N497SU
Category
Helicopter
Highest injury
Minor
Fatalities
0

Probable cause

The student pilot’s failure to maintain rotor rpm and airspeed and the flight instructor's inadequate remedial action to regain helicopter control during the straight-in autorotation which resulted in a hard landing.

NTSB narrative

The helicopter flight instructor was performing straight-in autorotation with power recovery maneuvers with a student pilot. On the third autorotation, the flight instructor stated that the student started the maneuver at 700 ft above ground level (agl) with the main rotor rpm at 100%. During the glide, when the RPM decayed to 90% and the airspeed decreased to 60 knots, the instructor intervened, and he attempted to recover the lost RPM. About 100 ft agl, the instructor prepared for a roll-on landing. The helicopter subsequently landed hard, rolled over on it’s left side and sustained substantial damage when the main rotor blades severed the tailboom. The instructor reported that there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

NTSB coding

Evidence available

  • Photos
  • 3 docket documents
View NTSB final reportView NTSB docket

Docket documents3

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