- Date
- September 13, 2021, 18:30 local (Sep 14, 2021, 00:30 UTC)
- Place
- Steamboat Springs, CO · open field
- Injuries
- 1 serious
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N4365EKolb Mark III
- Defining event
- Takeoff: Loss of control in flight
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Investigation class
- Class 3
- NTSB office
- Central Region
- Parties
- FAA FSDO
- FAA report
- 20210914016529A
- Case key
- 103901
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
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.
Findings · 3
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
The pilot flew the airplane with the previous owner in Indiana before purchasing it and driving it on a trailer to Steamboat Springs. A witness reported that the pilot intended to taxi around his private airstrip to get a better feel for the airplane. The airplane subsequently lifted off the ground, cleared several fences, and was about 20 ft above the ground when the airplane’s nose suddenly lowered and impacted the ground. The airplane sustained substantial damage to the fuselage. The pilot told the witness that he did not intentionally lower the nose of the airplane. The pilot later told a family member that he stalled the airplane. The airplane was not made available for investigators to examine.
Factual narrative
On September 13, 2021, at 1830 mountain daylight time, a Kolb Mark III airplane, N4365E, was substantially damaged when it was involved in an accident near Steamboat Springs, Colorado. The pilot sustained serious injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot’s wife, who witnessed the accident, reported that the pilot recently purchased the airplane. She stated that the pilot flew the airplane with the previous owner in Indiana before driving it on a trailer to Steamboat Springs. On the day of the accident, the pilot intended to taxi the airplane around his private airstrip to get used to the feel of the airplane. The airplane subsequently lifted off, cleared several fences, but only made it about 20 ft above the ground when the airplane’s nose suddenly lowered and impacted the ground. The airplane sustained substantial damage to the fuselage. The witness stated the engine was still running and she was unable to turn it off when she reached the accident site. The pilot told the witness that he did not command the airplane down but that it just fell. The pilot later told a family member that he stalled the airplane. The airplane was not made available for investigators to examine the airframe or flight control system. The pilot did not submit the National Transportation Safety Board Pilot/Operator Aircraft Accident/Incident Report (NTSB Form 6120.1).
Aircraft
- Registration
- N4365E
- Reported as
- Kolb Mark III
- Category
- Airplane, amateur-built
- Serial number
- M3086
- Built
- 1991
- Engine
- Rotax 582, 65 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Special, Experimental (Special)
- Airport
- n/a · Private Strip, runway UNK, grass/turf
- Equipment
- None
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 69
- Injuries
- Serious
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, With waivers/limitations
- Seat
- Left
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 310° at 7 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 72 °F, dew point 41 °F
- Altimeter
- 30.13 inHg
- Observed at
- KSBS, 5 nm away
- METAR
- KSBS 140015Z AUTO 31007KT 10SM CLR 22/05 A3013 RMK AO1 T02160052
Docket · 3
The files NTSB released with the investigation on September 20, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 436 KB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.