LAX92LA152

NTSB accident investigation · Hiller UH-12E · Watsonville, CA · March 27, 1992

Accident · No injuriesLimited investigationFinal report
Date
March 27, 1992, 05:35 local (13:35 UTC)
Place
Watsonville, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N149HAHiller UH-12E
Weather
Visual (VMC) · Dawn
Status
Completed · report August 26, 1993
Report
Approved by Office Director
FAA report
19920327007699A
Case key
27582

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

A failure of the pilot to conduct an adequate pre-flight inspection of the aircraft to ensure that the fuel supply was free of contaminates. Contributing to this accident was fuel contamination.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine power(total) - nonmechanicalTakeoff
Fluid,fuel - contaminationFactor
Aircraft preflight - inadequatePilot in commandCause
Forced landingDescent - emergency
Hard landingDescent - emergency
Terrain condition - open field
Landing gear,skid assembly - collapsed

Analysis

The certificated commercial pilot was conducting aerial spray operations in a helicopter. About 30 minutes after departing a nearby airport, the pilot was taking off from a field to begin applying the third load of an insecticide. About 100 yards from the takeoff point, the helicopter's engine suddenly lost power and sounded as if it was misfiring. The helicopter began to descend and the pilot flared the helicopter to slow the its forward motion. The tail rotor struck the ground and the helicopter then settled into the field, collapsing the landing gear skids. The wreckage examination at the accident site revealed water in the main fuel sump. A post accident examination of the engine revealed contamination in the fuel sump and left carburetor screen.

Aircraft

Registration
N149HA
Reported as
Hiller UH-12E
Category
Helicopter
Serial number
HA-3049
Airframe hours
4,814
Engine
Lycoming VO-540-CSA, 305 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Helicair Ag Inc.
Registered owner
Helicair Ag Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · December 5, 1991 · 70 hours before
Departed
SNS · Salinas, CA

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
33
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
7,300 total · 2,800 in this make and model · 7,200 as pilot in command · 75 in the last 90 days · 30 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Dawn
Wind
270° at 4 knots
Visibility
5 statute miles
Lowest ceiling
800 ft overcast
Temperature
55 °F, dew point 54 °F
Altimeter
29.00 inHg
Observed at
SNS, 15 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N149HA · 2

Matched to the same aircraft by N-number and date.