WPR20CA266 · Aviat A-1C-200 Husky
Aviat Aircraft Aviat A-1C-200 Husky · Accident: aerodynamic stall/spin while maneuvering
From Afton Municipal Airport (AFO) to Afton Municipal Airport (AFO)
Event
- NTSB case
- WPR20CA266
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Aviat A-1C-200 Husky
- Aircraft type
- Aviat A-1
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N298WY
- Operator
- Aviat Aircraft
- Onboard fatalities
- Unknown
- Route
- From Afton Municipal Airport (AFO), Afton, WYTo Afton Municipal Airport (AFO), Afton, WY
- Aircraft age
- About 2 years (built 2018)
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Maneuvering
- Defining eventThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Aerodynamic stall/spin
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Aircraft › Aircraft oper/perf/capability
- Personnel issues › Task performance
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot in the experimental test airplane reported that the purpose of the flight was to conduct spin testing, in support of future airplane type certification. Prior to the accident, he had completed seven power on test spins in which all spins exhibited no unusual or flat tendency. During the accident flight, the test condition called for a spin from level flight, with flaps up, and aft center of gravity, heavy weight, to the left, with aileron opposite of the turn. After one 360o rotation, the nose was much higher above the horizon than prior test conditions. The pilot applied corrective controls with no effect on any axis. The pilot was not able to recover the airplane from the induced spin and subsequently disembarked the airplane about 10,180 ft mean sea level. The pilot deployed his emergency parachute and during his descent he noted that the airplane was in a flat spin to ground impact. The airplane impacted the ground and sustained substantial damage to both wings and the fuselage. The pilot landed hard and sustained serious compression fractures in L1 and L2. The pilot reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation.
Probable cause
The pilot’s inability to regain airplane control after a pilot-induced spin conducted during a flight test, which resulted in a collision with terrain.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record WPR20CA266
- Event ID
- 20200811X05401
- Case number
- WPR20CA266
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status, cause areas. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: 69cfda9253c0f5db7079820a5f5468894be275dbcf505523bcd419d37a81f4a3; retrieved 2026-09-16T12:28:39.564Z.