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NTSB Report
September 21, 1990 · Aerospatiale AS350B · N700TV
Cloverdale, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 21, 1990
Injury Outcomes
No injuries (2 uninjured)
Location
Cloverdale, CA
Aircraft
Aerospatiale AS350B
Tail Number
N700TV
Operator
Resort Aviation
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX90LA341
AN AEROSPATIALE AS350B HELICOPTER LANDED HARD WHILE PRACTICING HOVERING AUTOROTATIONS. THE CFI INDICATED THAT THE STUDENT PILOT WAS ON THE CONTROLS AND ABRUPTLY LOWERED THE COLLECTIVE CONTROL DURING THE LAST HOVERING AUTOROTATION. THE HELICOPTER LANDED HARD. THE CFI ALSO INDICATED THAT HE FAILED TO ADEQUATELY GUARD THE COLLECTIVE CONTROL DURING THE LAST HOVERING AUTOROTATION.
NTSB Probable Cause
THE IMPROPER PROCEDURE EMPLOYED BY THE STUDENT PILOT. CONTRIBUTING TO THE ACCIDENT WAS FAILURE OF THE CFI TO ADEQUATELY GUARD THE FLIGHT CONTROLS TO APPLY TIMELY CORRECTIVE ACTIONS.
Full Narrative
AN AEROSPATIALE AS350B HELICOPTER LANDED HARD WHILE PRACTICING HOVERING AUTOROTATIONS. THE CFI INDICATED THAT THE STUDENT PILOT WAS ON THE CONTROLS AND ABRUPTLY LOWERED THE COLLECTIVE CONTROL DURING THE LAST HOVERING AUTOROTATION. THE HELICOPTER LANDED HARD. THE CFI ALSO INDICATED THAT HE FAILED TO ADEQUATELY GUARD THE COLLECTIVE CONTROL DURING THE LAST HOVERING AUTOROTATION.
Flight
Event TypeAccident
Event Time09:15 PDT
Nearest AirportCloverdale (0nm N)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAerospatiale AS350B
Tail NumberN700TV
Aircraft CategoryHeli
DamageSubstantial
OperatorResort Aviation
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsTurbomeca · ARRIEL 1B · Turboshaft · 641
Seats6
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 44 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind270° @ 8 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO