# Accident 20210914016529A: Byler Dan W KOLB MARK III, Steamboat Sprin, CO, September 14, 2021

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: September 14, 2021, 05:30 local time
- Place: Steamboat Sprin, CO
- Damage: Substantial damage
- Phase of flight: Takeoff: Climb Out
- Operating rules: General operating rules (Part 91)
- Location: 40.4943° N, 106.9828° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=40.4943&lon=-106.9828&mi=10
- Aircraft: N4365E, a cancelled registration (https://openairdocs.org/deregistered/N4365E-2023-04-01) (OpenAirDocs)
- Registry model: Byler Dan W KOLB MARK III (registry code 05618NB, https://openairdocs.org/model/byler-dan-w-kolb-mark-iii) (OpenAirDocs)
- Registry engine: Bombardier ROTAX (ALL) (registry code 09050, https://openairdocs.org/engine/bombardier-rotax-all) (OpenAirDocs)
- Reported make and model: BYLER DAN W KOLB MARK III
- Reported engine: BOMBARDIER ROTAX (ALL)
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 1
- Pilot certificates: Private pilot
- NTSB investigation: [NTSB CEN21LA425](https://openairdocs.org/ntsb/CEN21LA425) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20210914016529A

## Narrative

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

ON SEPTEMBER 14, 2021 AT APPROXIMATELY 05:30 AM MDT, N4365E, AN EXPERIMENTAL KOLB MARK III,  TOOK OF FROM A PRIVATE GRASS STRIP. SHORTLY AFTER ROTATION THE AIRCRAFT IMPACTED THE GROUND CAUSING SERIOUS INJURY TO THE PILOT. THE AIRCRAFT WAS SUBSTANTIALLY DAMAGED. THE WEATHER WAS  VMC AT THE TIME.

## 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 CEN21LA425](https://openairdocs.org/ntsb/CEN21LA425), Sep 14, 2021: Kolb Mark III (N4365E), Steamboat Springs, CO, substantial damage. Probable cause: The pilot’s failure to maintain adequate airspeed and his exceedance of the airplane’s critical angle of attack, which resulted in an aerodynamic stall.

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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