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NTSB Report
November 20, 2007 · Robinson R22 BETA · N463SH
Ramona, CA
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
November 20, 2007
Injury Outcomes
1 injury (1 serious injury), 1 uninjured
Location
Ramona, CA
Aircraft
Robinson R22 BETA
Tail Number
N463SH
Operator
Silver State Helicopters
Injuries
Serious
Aircraft Damage
Substantial
NTSB Number
SEA08CA032
While demonstrating a practice 180-degree autorotation to landing, the certified flight instructor allowed the helicopter to develop an excessive descent rate and low rotor rpm, which resulted in a hard landing. Although he attempted to take corrective action, he did not do so in time to keep the helicopter from contacting the asphalt surface with sufficient force to result in substantial damage to the helicopters airframe. Examination of the helicopter revealed no mechanical anomalies.
NTSB Probable Cause
An excessive descent rate during a simulated 180-degree power-off autorotation, and the flight instructor's failure to initiate corrective action in time to keep the helicopter from impacting the terrain.
Full Narrative
While demonstrating a practice 180-degree autorotation to landing, the certified flight instructor allowed the helicopter to develop an excessive descent rate and low rotor rpm, which resulted in a hard landing. Although he attempted to take corrective action, he did not do so in time to keep the helicopter from contacting the asphalt surface with sufficient force to result in substantial damage to the helicopters airframe. Examination of the helicopter revealed no mechanical anomalies.
Flight
Event TypeAccident
Event Time14:45 PST
Nearest AirportRamona Airport (0nm)
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftRobinson R22 BETA
Tail NumberN463SH
Aircraft CategoryHeli
DamageSubstantial
OperatorSilver State Helicopters
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-J2A · Reciprocating · 124
Seats2
People & Injuries
Injury Summary1 injury (1 serious injury), 1 uninjured
Fatal0
Serious1
Minor0
Uninjured1
Total2
Crew 1Age 30 · Second Class · None
Crew 2Age 29 · Serious
Conditions
ConditionsVMC
LightDaylight
Wind290° @ 6 kt
Visibility4 sm
CeilingNone
Temperature / Dew Point61 F / 0 C
Altimeter29.95 inHg
Weather SourcePILO