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NTSB Report
August 11, 2006 · Robinson R-22B · N228SH
Boise, ID
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
August 11, 2006
Injury Outcomes
No injuries (2 uninjured)
Location
Boise, ID
Aircraft
Robinson R-22B
Tail Number
N228SH
Operator
Silver State Helicopter
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA06CA160
While demonstrating a 180 degree autorotation to landing, the instructor pilot inadvertently allowed the helicopter to attain an excessive rate of descent. Although he added power and initiated a go-around, he had waited too long to begin the go-around, and he was unable to keep the helicopter from impacting the end of the runway and bouncing back into the air. After hover-taxiing to parking, the instructor inspected the helicopter, whereupon it was determined it had sustained substantial damage.
NTSB Probable Cause
The instructor pilot's inadvertent excessive descent rate, and his delay of remedial action during the demonstration of a 180 degree autorotation.
Full Narrative
While demonstrating a 180 degree autorotation to landing, the instructor pilot inadvertently allowed the helicopter to attain an excessive rate of descent. Although he added power and initiated a go-around, he had waited too long to begin the go-around, and he was unable to keep the helicopter from impacting the end of the runway and bouncing back into the air. After hover-taxiing to parking, the instructor inspected the helicopter, whereupon it was determined it had sustained substantial damage.
Flight
Event TypeAccident
Event Time07:55 PDT
Nearest AirportBoise Air Terminal (0nm)
Runway28
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft
AircraftRobinson R-22B
Tail NumberN228SH
Aircraft CategoryHeli
DamageSubstantial
OperatorSilver State Helicopter
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-J2A · Reciprocating
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 35 · Second Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0