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NTSB Report
August 23, 1982 · Aerospatiale AS-355F · N57807
Cedar Rapids, IA
Overview
Report Status
Preliminary report
Event Type
Accident
Date
August 23, 1982
Injury Outcomes
2 injuries (2 minor injuries), 3 uninjured
Location
Cedar Rapids, IA
Aircraft
Aerospatiale AS-355F
Tail Number
N57807
Operator
Collins General Avaition Avion
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
MKC82DA155
THE AIRCREW LOST CONTROL OF THE HELICOPTER WHILE MAKING A PEDAL TURN AT 800 TO 900 AGL. AFTER 5 ROTATIONS, THE HELICOPTER IMPACTED THE GROUND, BOUNCED, ROLLED AND FELL ON ITS RIGHT SIDE. SWITCHES WERE CUT AND THE CREW MADE AN EXIT. AN INVESTIGATION REVEALED NO MALFUNCTIONS. IN THE HELICOPTER HANDBOOK, IT SAYS TO "USE PEDALS TO COMPENSATE FOR TORQUE. DO NOT USE TO ASSIST THE TURN." IN INVESTIGATIVE FLIGHT TESTS, MISUSE OF THE PEDALS RESULTED IN A SPINNING TUCKED DESCENT UNTIL RECOVERY WAS INITIATED.
Full Narrative
THE AIRCREW LOST CONTROL OF THE HELICOPTER WHILE MAKING A PEDAL TURN AT 800 TO 900 AGL. AFTER 5 ROTATIONS, THE HELICOPTER IMPACTED THE GROUND, BOUNCED, ROLLED AND FELL ON ITS RIGHT SIDE. SWITCHES WERE CUT AND THE CREW MADE AN EXIT. AN INVESTIGATION REVEALED NO MALFUNCTIONS. IN THE HELICOPTER HANDBOOK, IT SAYS TO "USE PEDALS TO COMPENSATE FOR TORQUE. DO NOT USE TO ASSIST THE TURN." IN INVESTIGATIVE FLIGHT TESTS, MISUSE OF THE PEDALS RESULTED IN A SPINNING TUCKED DESCENT UNTIL RECOVERY WAS INITIATED.
Flight
Event TypeAccident
Event Time16:25 CDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireGrd
Aircraft ExplosionGrd
Aircraft
AircraftAerospatiale AS-355F
Tail NumberN57807
Aircraft CategoryHeli
DamageSubstantial
OperatorCollins General Avaition Avion
Operating RulePart 91
Engines2
Engine TypeTurboshaft
Engine DetailsAllison · 250-C20F · Turboshaft · 330
Seats7
People & Injuries
Injury Summary2 injuries (2 minor injuries), 3 uninjured
Fatal0
Serious0
Minor2
Uninjured3
Total5
Crew 1Age 36 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind300° @ 5 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point18 C / 0 C
Altimeter29.00 inHg