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NTSB Report
August 13, 2015 · Robinson Helicopter R22 BETA BETA · N3103Q
Caldwell, ID
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
August 13, 2015
Injury Outcomes
2 injuries (2 minor injuries)
Location
Caldwell, ID
Aircraft
Robinson Helicopter R22 BETA BETA (2006)
Tail Number
N3103Q
Operator
Silverhawk Aviation Academy
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
GAA15CA224
According to the flight instructor, while performing a simulated, right turn, 180 degree autorotation the helicopter impacted the ground and rolled over. The flight instructor stated that at 200 feet AGL, the low rotor RPM horn sounded, and he and the student pilot "attempted a recovery." The flight instructor reported that after hearing the low rotor RPM horn, but prior to impact, "a loud thumping noise could be heard and a violent shake in the cyclic could be felt." He stated that he chose to level the helicopter before it impacted the terrain and rolled. The helicopter sustained substantial damage to the main rotor system, fuselage and tail boom. The pilot reported that there were no mechanical failures or anomalies prior to flight that would have prevented normal operation.
NTSB Probable Cause
The helicopter flight instructor's delayed remedial action during an autorotation resulting in a loss of control and impact with terrain.
Full Narrative
According to the flight instructor, while performing a simulated, right turn, 180 degree autorotation the helicopter impacted the ground and rolled over. The flight instructor stated that at 200 feet AGL, the low rotor RPM horn sounded, and he and the student pilot "attempted a recovery." The flight instructor reported that after hearing the low rotor RPM horn, but prior to impact, "a loud thumping noise could be heard and a violent shake in the cyclic could be felt." He stated that he chose to level the helicopter before it impacted the terrain and rolled. The helicopter sustained substantial damage to the main rotor system, fuselage and tail boom. The pilot reported that there were no mechanical failures or anomalies prior to flight that would have prevented normal operation.
Flight
Event TypeAccident
Event Time15:35 PDT
Nearest AirportCaldwell Industrial (0nm N)
Runway30
Runway Length5500 ft
Runway Width100 ft
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftRobinson Helicopter R22 BETA BETA
Tail NumberN3103Q
Aircraft CategoryHeli
DamageSubstantial
OperatorSilverhawk Aviation Academy
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-J2A · Reciprocating · 145
Seats2
People & Injuries
Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 32 · Second Class · Minor
Crew 2Age 29 · Second Class · Minor
Conditions
ConditionsVMC
LightDaylight
Wind340° @ 7 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point57
Altimeter29.88 inHg
Observation Time22:35
Weather SourceWFAC