# Accident 20230602010169A: Roger Thorstad/Brad Thorstad KOLB TWINSTAR MARK 3, Starbuck, MN, June 2, 2023

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 2, 2023, 16:11 local time
- Place: Starbuck, MN
- Airport: Starbuck Municipal
- Damage: Substantial damage
- Phase of flight: Landing: Touchdown
- Operating rules: General operating rules (Part 91)
- Location: 45.5989° N, 95.5361° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=45.5989&lon=-95.5361&mi=10
- Aircraft: N1025T, registered now (https://openairdocs.org/aircraft/N1025T) (OpenAirDocs)
- Registry model: Roger Thorstad/Brad Thorstad KOLB TWINSTAR MARK 3 (registry code 05640FY, https://openairdocs.org/model/roger-thorstad-brad-thorstad-kolb-twinstar-mark-3) (OpenAirDocs)
- Registry engine: Rotax 912UL (registry code 55592, https://openairdocs.org/engine/rotax-912ul) (OpenAirDocs)
- Reported make and model: ROGER THORSTAD/BRAD THORSTAD KOLB TWINSTAR MARK 3
- Reported engine: ROTAX 912UL
- People aboard: 2
- Fatal injuries: 0
- Other injuries: 2
- Pilot certificates: Commercial pilot, flight instructor
- Pilot flight hours: 1,580 total
- NTSB investigation: [NTSB CEN23LA227](https://openairdocs.org/ntsb/CEN23LA227) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20230602010169A

## Narrative

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

ON JUNE 2, 2023, A KOLB TWINSTAR MARK III AIRPLANE DEPARTED FROM THE CHANDLER FIELD AIRPORT (AXN), ALEXANDRIA, MINNESOTA, AT 1409 CENTRAL DAYLIGHT TIME, FOR THE STARBUCK MUNICIPAL AIRPORT (D32), STARBUCK, MINNESOTA. THE AIRPLANE ENTERED THE TRAFFIC PATTERN AT D32 AND PERFORMED TWO THREE-POINT LANDINGS TO THE DRY TURF ON RUNWAY 15. AT APPROXIMATELY 1453 CENTRAL DAYLIGHT TIME, THE AIRCRAFT ATTEMPTED A THIRD LANDING ON RUNWAY 15. UPON TOUCHDOWN, THE LEFT WHEEL DEPARTED FROM THE LEFT STRUT. THE AIRPLANE THEN BEGAN SLIDING ON THE TURF, THE AIRPLANE NOSED OVER, AND CAME TO REST INVERTED. THE TWO OCCUPANTS WERE ABLE TO EGRESS FROM THE AIRPLANE WITHOUT FURTHER INCIDENT. THE AIRPLANE SUSTAINED SUBSTANTIAL DAMAGE TO THE FUSELAGE, BOTH WINGS, AND THE EMPENNAGE. THE FLIGHT INSTRUCTOR AND THE PRIVATE PILOT (AIRCRAFT BUILDER AND ^PRIVACY DATA OMITTED^) SUSTAINED SERIOUS INJURIES.

## 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 CEN23LA227](https://openairdocs.org/ntsb/CEN23LA227), Jun 2, 2023: Kolb Twinstar (N1025T), Starbuck, MN, substantial damage. Probable cause: The pilot’s improper landing flare and hard landing, which resulted in the left axle fracturing from bending overstress.

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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