CEN25LA143

NTSB accident investigation · Hiller UH12-ET · Ruston, LA · March 25, 2025

Accident · No injuriesClass 4 · LimitedFinal report
Date
March 25, 2025, 07:49 local (12:49 UTC)
Place
Ruston, LA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N6006KHiller UH12-ET
Defining event
Maneuvering: Fuel exhaustion
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Central Region
Parties
Federal Aviation Administration, Baton Rouge FSDO
Case key
199948

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

The pilot’s improper fuel planning and fuel management, which resulted in a total loss of engine power due to fuel exhaustion and subsequent impact with terrain during an autorotation.

Findings · 3

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 levelHiller UH-12E: 1 caseAll aircraft: 1,695 casesProbable cause
Fluids: fuelAircraft › Fluids/misc hardware · Fluid managementHiller UH-12E: 1 caseAll aircraft: 1,695 casesProbable cause
Planning/preparation: fuel planningPersonnel issues › Task performance · PilotHiller UH-12E: 1 caseAll aircraft: 719 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

The pilot departed on an aerial application flight in the helicopter to continue spraying a field with herbicide. The pilot stated that he became preoccupied with touching up areas, which took longer than expected. While flying across the field to begin the next spray pass, the engine experienced a total loss of power, and he immediately knew that it was due to fuel exhaustion. The pilot performed an autorotation and landed hard, which resulted in substantial damage to the main rotor blades and the tailboom. The pilot stated that after the landing, he checked the helicopter fuel tank, and it was empty. There were no mechanical malfunctions or failures of the helicopter that would have precluded normal operation.

Aircraft

Registration
N6006K
Reported as
Hiller UH12-ET
Category
Helicopter
Serial number
HA3083
Built
1983
Airframe hours
12,030.2
Engine
Rolls Royce 250-C20B, 420 horsepower, turbo shaft
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Summit Helicopters, Inc.
Registered owner
Summit Helicopters, Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · January 24, 2025
Destination
Same as departure

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
21
Injuries
None
Certificates
Commercial, Flight instructor, Private
Airplane ratings
Single-engine land
Instrument ratings
Helicopter
Medical
Class 1
Last flight review
March 24, 2024
Restraint
4-point
Flight hours
944 total · 11 in this make and model · 944 as pilot in command · 14 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
225° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
53 °F, dew point 51 °F
Altimeter
30.09 inHg
Observed at
RSN, 10 nm away

Docket · 2

The files NTSB released with the investigation on August 21, 2025, on NTSB’s docket system: statements, records, photos and specialists’ reports. 7.7 MB in all.