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NTSB Report
January 1, 2010 · Hiller UH-12E · N440NR
Tipton, CA
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
January 1, 2010
Injury Outcomes
1 injury (1 minor injury)
Location
Tipton, CA
Aircraft
Hiller UH-12E
Tail Number
N440NR
Operator
Costa Spraying
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
WPR10CA094
While maneuvering at low level over a field during an aerial application flight, the helicopter pilot took his hand off the collective to adjust the sun visor because the sun was in his eyes. The pilot reported that he had used his leg to block the collective from moving as he adjusted the visor. The helicopter hit mild turbulence and bumped his leg away from the collective. The collective slipped down, and the helicopter impacted the ground and rolled over on its side. The helicopter sustained substantial damage to the tailboom and cockpit. The pilot stated that there were no mechanical failures or malfunctions with the helicopter's flight control system or engine prior to the accident.
NTSB Probable Cause
Personnel issues-Psychological-Attention/monitoring-Task monitoring/vigilance-Pilot - C
Full Narrative
While maneuvering at low level over a field during an aerial application flight, the pilot took his hand off the collective to adjust the sun visor because the sun was in his eyes. The pilot reported that he had used his leg to block the collective from moving as he adjusted the visor. The helicopter hit mild turbulence and bumped his leg away from the collective. The collective slipped down, and the helicopter impacted the ground and rolled over on its side. The helicopter sustained substantial damage to the tailboom and cockpit. The pilot stated that there were no mechanical failures or malfunctions with the helicopter's flight control system or engine prior to the accident.
Flight
Event TypeAccident
Event Time11:42 PST
Nearest AirportVisalia Municipal Airport (18nm)
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHiller UH-12E
Tail NumberN440NR
Aircraft CategoryHeli
DamageSubstantial
OperatorCosta Spraying
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · VO-540 SERIES · Reciprocating · 310
Seats4
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 35 · Second Class · Minor
Conditions
ConditionsVMC
LightDaylight
Wind350° @ 3 kt
Visibility3 sm
CeilingNone
Temperature / Dew Point52 / 46
Altimeter30.30 inHg
Observation Time19:55