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NTSB Report
January 1, 2021 · Bell 47D 1 · N74823
Marana, AZ
Overview
Report Status
Probable Cause
Event Type
Accident
Date
January 1, 2021
Injury Outcomes
1 injury (1 minor injury)
Location
Marana, AZ
Aircraft
Bell 47D 1 (1953)
Tail Number
N74823
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
WPR21LA077
The helicopter pilot reported that, while hover taxing on the taxiway, a Cessna airplane taxied from the ramp onto the same taxiway and turned toward and approached the helicopter. The helicopter pilot assumed that the Cessna would turn onto another taxiway toward the runway, however the Cessna continued toward the helicopter. The helicopter pilot stated that he went into a vertical lift, but "due to low rotor RPM the helicopter went into a loss of control spin". The helicopter landed hard to the left of the taxiway, substantially damaging the fuselage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.
NTSB Probable Cause
Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Yaw control-Not attained/maintained
Full Narrative
The helicopter pilot reported that, while hover taxing on the taxiway, a Cessna airplane taxied from the ramp onto the same taxiway and turned toward and approached the helicopter. The helicopter pilot assumed that the Cessna would turn onto another taxiway toward the runway, however the Cessna continued toward the helicopter. The helicopter pilot stated that he went into a vertical lift, but "due to low rotor RPM the helicopter went into a loss of control spin". The helicopter landed hard to the left of the taxiway, substantially damaging the fuselage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.
Flight
Event TypeAccident
Event Time13:15 MST
Nearest AirportMarana Rgnl (0nm N)
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 47D 1
Tail NumberN74823
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsFranklin · 6V4 SERIES · Reciprocating · 210
Seats2
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 63 · Third Class · Minor
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingNone
Temperature / Dew Point65 F / 0 C
Altimeter30.05 inHg
Observation Time12:15
Weather SourcePILO