Probable cause
The pilot undergoing instruction’s excessive application of asymmetrical braking during landing, which resulted in a ground loop.
NTSB analysis
According to the flight instructor, during the landing roll the pilot undergoing instruction applied asymmetrical braking and locked the left brake. This led to a ground loop. The airplane sustained substantial damage to the right wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.
Text from the NTSB. Open the NTSB docket for WPR23LA260 for the full record.
Event
- Date
- Jul 7, 2023
- Type
- Accident
- Place
- Fremont Island, Utah
- Nearest airport
- Freemont Island Lower (89D)
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
Cessna 170B
- N-number
- N1664D
- Category
- Airplane
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Instructional
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.