Probable cause
The pilot's failure to maintain directional control during takeoff.
NTSB analysis
The pilot reported that during the takeoff roll about 50 mph, the airplane veered to the left of the runway centerline. The pilot attempted to correct back to the right; however, the airplane continued to the left, exited the left side of the runway, and then momentarily became airborne. Subsequently, the left wing struck the ground which resulted in substantial damage to the left wing. The pilot reported that he might have attempted the takeoff with the tailwheel in the unlocked position.
Text from the NTSB. Open the NTSB docket for CEN25LA405 for the full record.
Event
- Date
- Sep 30, 2025
- Type
- Accident
- Place
- Longmont, Colorado
- Nearest airport
- Vance Brand (LMO)
- Highest injury
- Minor
- Minor injuries
- 1
- Weather
- Visual (VMC)
- Light
- Day
Sukhoi SU-26MX
- N-number
- N25SU
- Category
- Airplane
- Year built
- 1991
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Personal
From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.