# Accident 20260707009409A: Air Tractor Inc AT-502B, Ogden, UT, July 7, 2026

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 7, 2026, 12:56 local time
- Place: Ogden, UT
- Airport: Ogden-Hinckley
- Damage: Substantial damage
- Phase of flight: Landing: Rollout
- Operating rules: Agricultural (Part 137)
- Location: 41.1951° N, 112.0122° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=41.1951&lon=-112.0122&mi=10
- Aircraft: N647LA, registered now (https://openairdocs.org/aircraft/N647LA) (OpenAirDocs)
- Registry model: Air Tractor AT-502B (registry code 0390307, https://openairdocs.org/model/air-tractor-at-502b) (OpenAirDocs)
- Registry engine: Pratt & Whitney Canada PT6A-34AG (registry code 52251, https://openairdocs.org/engine/pratt-whitney-canada-pt6a-34ag) (OpenAirDocs)
- Reported make and model: AIR TRACTOR INC AT-502B
- Reported engine: P&W CANADA PT6A-34AG
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Commercial pilot
- Pilot flight hours: 4,050 total
- NTSB investigation: [NTSB WPR26LA249](https://openairdocs.org/ntsb/WPR26LA249) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20260707009409A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ON JULY 7, 2026, DURING THE TAKEOFF ACCELERATION AT OGDEN-HINCKLEY AIRPORT (OGD), THE PILOT IN COMMAND (PIC) EXPERIENCED ABNORMAL FLUTTER AND BINDING IN THE LEFT MAIN GEAR ASSEMBLY. BASED ON THE AIRCRAFT'S WEIGHT, AIRSPEED, AND REMAINING RUNWAY DISTANCE, THE PIC DETERMINED THAT CONTINUING THE TAKEOFF PRESENTED LESS OPERATIONAL RISK THAN ATTEMPTING A HIGH-SPEED REJECTED TAKEOFF (RTO).

FOLLOWING DEPARTURE, THE PIC REPORTED NO CONTROL SURFACE ANOMALIES, FLIGHT CONTROL RESTRICTION, OR DEGRADATION IN MANEUVERABILITY. SHORTLY AFTER TAKEOFF, THE PIC NOTIFIED MAINTENANCE PERSONNEL REGARDING THE LEFT GEAR BINDING.

UPON COMPLETION OF THE FLIGHT OBJECTIVE, THE PIC RETURNED TO OGD WITH THE INTENTION TO LAND ON RUNWAY 21. DURING THE LANDING ROLLOUT, AS AIRSPEED DECAYED AND RUDDER AUTHORITY DECREASED, THE AIRCRAFT BEGAN VEERING TO THE RIGHT. THE PIC WAS UNABLE TO MAINTAIN DIRECTIONAL CONTROL AGAINST THE DRAG ON THE LEFT WHEEL, CAUSING THE AIRCRAFT TO DEPART THE EASTERN EDGE OF THE RUNWAY SURFACE, RESULTING IN THE SEPARATION OF THE LEFT MAIN LANDING GEAR ASSEMBLY.

A POST-ACCIDENT PHYSICAL INSPECTION REVEALED THAT THE LEFT WHEEL ASSEMBLY'S OUTER WHEEL BEARING, RETAINING AXLE NUT, AND RETAINING NUT COTTER PIN WERE MISSING. ON-SITE PHYSICAL EVIDENCE INDICATED THESE COMPONENTS WERE ABSENT PRIOR TO TOUCHDOWN, CAUSING THE INITIAL WHEEL BINDING AND SUBSEQUENT WHEEL DISPLACEMENT DURING ROLLOUT.

MAINTENANCE RECORDS INDICATED THAT THE LAST DOCUMENTED INSPECTION WAS AN ANNUAL INSPECTION PERFORMED IN FEBRUARY 2026. INTERVIEWS WITH THE CHIEF PILOT AND MAINTENANCE STAFF CONFIRMED NO FURTHER MAINTENANCE OR GEAR INSPECTIONS HAD OCCURRED SINCE THAT DATE.

NTSB FINDING: THE NATIONAL TRANSPORTATION SAFETY BOARD’S INITIAL DETERMINATION OF CAUSE IS THAT INFLIGHT SEPARATION AND DEPARTURE OF THE WHEEL BEARING, RETAINING NUT, AND COTTER PIN FOR REASONS UNDETERMINED.

A SERVICE DIFFICULTY REPORT (SDR REF: 2026FA0000599) HAS BEEN FILED. THIS INTERNAL INVESTIGATION IS CLOSED WITH NO FURTHER ACTION REQUIRED AT THIS TIME, PENDING ANY ADDITIONAL FINDINGS RELEASED IN THE FINAL NTSB DOCKET.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB WPR26LA249](https://openairdocs.org/ntsb/WPR26LA249), Jul 7, 2026: Air Tractor AT-502B (N647LA), Ogden, UT, substantial damage, investigation ongoing

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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