WPR18CA096

NTSB accident investigation · Bell 47G · Pixley, CA · February 28, 2018

Accident · Serious injuriesData collectionFinal report
Date
February 28, 2018, 15:30 local (23:30 UTC)
Place
Pixley, CA
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N7800SBell 47G
Defining event
Maneuvering-low-alt flying: Fuel exhaustion
Weather
Visual (VMC) · Day
Status
Completed · report June 14, 2018
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20180228009629A
Case key
96804

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

On this page

Probable cause

A total loss of engine power due to fuel starvation, which resulted from the pilot’s failure to ensure that adequate fuel was on board for the flight. Contributing to the accident was the pilot’s self-induced pressure to complete the flight due to impending rain.

Findings · 5

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.

Fluids: fuelAircraft › Fluids/misc hardware · Fluid levelBell 47G-5: 1 caseAll aircraft: 1,695 casesProbable cause
Planning/preparation: fuel planningPersonnel issues › Task performance · PilotBell 47G-5: 1 caseAll aircraft: 719 casesProbable cause
Action: forgotten action/omissionPersonnel issues › Action/decision · PilotBell 47G-5: 1 caseAll aircraft: 440 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Effect on operationBell 47G-5: 2 casesAll aircraft: 933 cases

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

The pilot reported that, after landing and during the loading for the next chemical agricultural application flight with the engine running, he exited the helicopter to speak to the owner of the property he was spraying. He could not remember if he had instructed the ground crewman to fuel the helicopter or not. Additionally, the pilot stated that, before takeoff, he failed to check the fuel level and was unaware that the ground crewman had not refueled the helicopter. After takeoff and completing only one spray pass, the engine lost power. The pilot opined that he "just ran out of fuel." Unable to make it back to the loading area, he landed in a grove of trees, which resulted in substantial damage to the fuselage. The pilot also mentioned that due to the approaching rain, he was in a hurry to get the field sprayed before it arrived. The pilot reported that there were no preimpact mechanical anomalies with the helicopter or engine that would have precluded normal operation.

Factual narrative

The pilot reported that after landing and during the loading for the next chemical agricultural application flight with the engine running, he exited the helicopter to speak to the owner of the property he was spraying. He could not remember if he had instructed the ground crewman to fuel the helicopter or not. Additionally, the pilot stated that prior to takeoff he failed to check the fuel level and was unaware that the ground crewman had not refueled the helicopter. After takeoff and completing only one spray pass, the engine lost power. The pilot opined that he "just ran out of fuel." Unable to make it back to the loading area, he landed in a grove of trees, which resulted in substantial damage to the helicopter. The pilot also mentioned that due to the approaching rain, he was in a hurry to get the field sprayed before it arrived. The pilot reported that there were no mechanical anomalies with the helicopter or engine that would have precluded normal operation.

Aircraft

Registration
N7800S
Reported as
Bell 47G (5)
Category
Helicopter
Serial number
7854
Built
1966
Airframe hours
10,132
Engine
Lycoming VO-435, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · April 7, 2017
Departed
Pixley, CA
Destination
Pixley, CA
Equipment
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
53
Injuries
Serious
Certificate
Commercial
Medical
Class 2, With waivers/limitations
Last flight review
July 6, 2016
Seat
Left
Flight hours
17,000 total · 17,000 in this make and model · 10 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
110° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
59 °F, dew point 46 °F
Altimeter
30.19 inHg
Observed at
PTV, 8 nm away

Docket · 5

The files NTSB released with the investigation on April 20, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 11.7 MB 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 N7800S · 1

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