- Date
- June 24, 2025, 07:15 local (12:15 UTC)
- Place
- Pierre, SD
- Injuries
- 1 serious
- Damage
- Substantial damage
- Phase of flight
- Maneuvering
- Aircraft
- N107MLAir Tractor AT-402B
- Defining event
- Maneuvering-low-alt flying: Collision with terr/obj (non-CFIT)
- 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, Rapid City FSDO
- FAA report
- 20250624006999A
- Case key
- 200399
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 failure to maintain clearance with the power lines while maneuvering that resulted in an in-flight collision with the power lines and impact with terrain.
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.
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 of a field, the airplane was in a 20 to 30o descent at 140 kts when its vertical stabilizer struck a power line. The vertical stabilizer and rudder separated from the airplane, which resulted in the airplane’s uncontrolled descent and impact with the ground. The airplane sustained substantial damage to the vertical stabilizer, rudder, fuselage, and both wings. The pilot stated that he knew the location of the power line, but it was pilot error that resulted in the collision with the power line. The pilot stated there were no mechanical malfunctions or failures with the airplane before the accident.
Aircraft
- Registration
- N107ML
- Reported as
- Air Tractor AT-402B
- Category
- Airplane
- Serial number
- 402B-1250
- Built
- 2012
- Airframe hours
- 2,972
- Engine
- Pratt and Whitney PT6A-34AG, 750 horsepower, turbo prop
- Damage
- Substantial damage
- Flight
- Aerial application · Part 91
- Operator
- MIke Ogan Farms
- Registered owner
- MIke Ogan Farms
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- Annual · April 1, 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
- 46
- Injuries
- Serious
- Certificate
- Commercial
- Airplane ratings
- Multi-engine land, Single-engine land
- Medical
- Class 3, With waivers/limitations
- Last flight review
- November 10, 2023
- Seat
- Center
- Restraint
- 5-point
- Flight hours
- 4,608 total · 867 in this make and model · 4,562 as pilot in command · 135 in the last 90 days · 57 in the last 30 days · 0 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 35° at 2 knots
- Visibility
- 11.5 statute miles
- Lowest ceiling
- None
- Temperature
- 54 °F, dew point 48 °F
- Altimeter
- 28.35 inHg
- Observed at
- PIR, 11 nm away
Docket · 3
The files NTSB released with the investigation on September 5, 2025, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.2 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.