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NTSB Report
May 1, 2013 · Schweizer 300C · N322MH
Hamilton, MT
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
May 1, 2013
Injury Outcomes
No injuries (2 uninjured)
Location
Hamilton, MT
Aircraft
Schweizer 300C
Tail Number
N322MH
Operator
Choice Aviation
Injuries
None
Aircraft Damage
Substantial
NTSB Number
WPR13CA253
The flight instructor reported that during an instructional flight, the helicopter was 500 feet above ground level when he rolled the throttle off with the intent for the student to respond by initiating a straight-in autorotation. The student pilot did not respond properly, so the instructor took the controls to initiate a power recovery. The helicopter subsequently landed hard, deforming both skids and substantially damaging the airframe. The pilot did not report any preimpact mechanical malfunctions or failures with the helicopter that would have precluded normal operation.
NTSB Probable Cause
The student pilot’s failure to maintain helicopter control during a practice autorotation and the flight instructor's delayed remedial action.
Full Narrative
The flight instructor reported that during an instructional flight, the helicopter was at 500 feet above ground level when he rolled the throttle off with the intent for the student to respond by initiating a straight in autorotation. The student pilot did not respond properly, so the instructor took over to initiate a power recovery. The helicopter subsequently landed hard, deforming both skids and substantially damaging the airframe. The pilot did not report any preimpact mechanical malfunctions or failure with the helicopter that would have precluded normal operation.
Flight
Event TypeAccident
Event Time08:30 MDT
Nearest AirportRavalli County Airport (0nm)
Runway34
Runway Length4200 ft
Runway Width75 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftSchweizer 300C
Tail NumberN322MH
Aircraft CategoryHeli
DamageSubstantial
OperatorChoice Aviation
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · HIO-360-01A · Reciprocating · 190
Seats3
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 45 · Second Class · None
Crew 2Age 46 · Third Class · None
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingNone
Temperature / Dew Point28 C / 0 C
Altimeter0
Observation Time13:15
Weather SourcePILO