WPR11CA339

NTSB accident investigation · Bell 47G-5 · Watsonville, CA · July 20, 2011

Accident · No injuriesData collectionFinal report
Date
July 20, 2011, 10:30 local (17:30 UTC)
Place
Watsonville, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N1375XBell 47G-5
Defining event
Maneuvering-low-alt flying: Low altitude operation/event
Weather
Visual (VMC) · Day
Status
Completed · report October 6, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20110720017189A
Case key
81165

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

The pilot's failure to maintain clearance from a pole while maneuvering during an aerial application flight.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Object/animal/substance: poleEnvironmental issues › Physical environment · Response/compensationBell 47G-5: 1 caseAll aircraft: 142 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

During an aerial application flight, the pilot was spraying water on a field to wash the hopper tank for the next load of chemicals. During the second pass, the pilot attempted to clear a wire that ran perpendicular to his flight path by descending beneath it at an altitude of approximately 5 feet. The pilot reported that the outer end of one main rotor blade struck the pole and the helicopter impacted the ground and rolled over.

Factual narrative

The pilot was spraying water on a field to wash the hopper tank for the next load of chemicals. On the second pass the pilot attempted to clear a wire that ran perpendicular to his flight path by descending beneath it at an altitude of approximately 5 feet. The pilot reported that the outer end of one main rotor blade struck the pole and the helicopter hit the ground and rolled over.

Aircraft

Registration
N1375X
Reported as
Bell 47G-5
Category
Helicopter
Serial number
7840
Airframe hours
8,224
Engine
Lycoming VO-435 SERIES, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Gomes Farm Air Service Inc
Registered owner
Gomes Farm Air Service Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Condition · July 9, 2011 · 15 hours before
Departed
KSNS · Salinas, CA
Destination
N/A · Watsonville, CA
Airport
N/A · None

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
24
Injuries
None
Certificate
Commercial
Medical
Class 2, With waivers/limitations
Last flight review
November 11, 2010
Seat
Left
Flight hours
342 total · 172 in this make and model · 282 as pilot in command · 78 in the last 90 days · 29 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
154° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 55 °F
Altimeter
29.96 inHg
Observed at
KWVI, 7 nm away

Docket · 1

The files NTSB released with the investigation on August 17, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 521 KB in all.

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 N1375X · 3

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