Thorp T18 N18CH accident near Lake Elmo, Minnesota, July 6, 2025
Thorp T18, registration N18CH, was involved in an accident near Lake Elmo, Minnesota on July 6, 2025. The NTSB lists the highest injury level as none. Case CEN25LA246 is completed.
ADS-B receivers recorded 20 minutes of the flight, reaching a maximum of 3,000 ft. The last recorded position was at 15:55 UTC, at 1,100 ft and 77 knots, descending at 1,408 feet per minute, about 1 km from Lake Elmo Arpt (K21D).
The nearest weather report, from K21D (1 km away), showed wind 360° at 6 knots, visibility 6 miles or more, no ceiling reported (VFR conditions).
This page reconstructs the flight from public ADS-B data for information only. The NTSB report is the authority on what happened and why.
Key facts
- Date
- July 6, 2025
- Location
- Lake Elmo, Minnesota
- Aircraft
- Thorp T18
- Registration
- N18CH
- Injuries
- None
- NTSB case
- CEN25LA246 (Completed)
- Nearest airport
- Lake Elmo Arpt (K21D)
- Recorded flight
- 20 min, max 3,000 ft
- Last recorded position
- 15:55 UTC, 1,100 ft, 77 kt
3D flight replay
Replay the recorded flight in 3D with the weather, light and terrain at the time, flight instruments reconstructed from the aircraft's ADS-B transmissions, and automatically detected events.
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Sources: NTSB case CEN25LA246; ADS-B flight data from adsb.lol (ODbL); weather from NOAA / Iowa Environmental Mesonet and Open-Meteo.