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NTSB Report
July 10, 2016 · Bell OH 58 A · N588MP
Surprise, AZ
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
July 10, 2016
Injury Outcomes
1 injury (1 minor injury)
Location
Surprise, AZ
Aircraft
Bell OH 58 A (1972)
Tail Number
N588MP
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
GAA16CA372
The pilot of an aerial application helicopter reported that after spraying a field he noticed that he missed a portion of the field. The pilot further reported that he maneuvered at a low altitude to the south end of the field, made a quick right turn to the north, dove into the field at approximately 45 knots, flew into his own vortices, and impacted the terrain. The helicopter sustained substantial damage to the fuselage. The pilot reported that there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.
NTSB Probable Cause
While at a low altitude, the pilot's decision to do an abrupt descending right downwind turn which resulted in flying through his own vortices and an impact with terrain.
Full Narrative
The pilot of an aerial application helicopter reported that after spraying a field he noticed that he missed a portion of the field. The pilot further reported that he maneuvered at a low altitude to the south end of the field, made a quick right turn to the north, dove into the field at approximately 45 knots, flew into his own vortices, and impacted the terrain. The helicopter sustained substantial damage to the fuselage. The pilot reported that there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.
Flight
Event TypeAccident
Event Time12:30 MST
Nearest Airport0nm
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell OH 58 A
Tail NumberN588MP
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 137
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C20 · Turboshaft · 420
Seats2
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 45 · Second Class · Minor
Conditions
ConditionsVMC
LightDaylight
Wind170° @ 10 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point10 C / 41 C
Altimeter29.80 inHg
Observation Time18:58
Weather SourceWFAC