# Accident 20211023018099A: American Champion Aircraft 8KCAB, Marengo, WI, October 23, 2021

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: October 23, 2021, 14:40 local time
- Place: Marengo, WI
- Damage: Destroyed
- Phase of flight: Maneuver
- Operating rules: General operating rules (Part 91)
- Location: 46.4067° N, 90.8980° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=46.4067&lon=-90.8980&mi=10
- Aircraft: N843AC, a cancelled registration (https://openairdocs.org/deregistered/N843AC-2022-08-09) (OpenAirDocs)
- Registry model: American Champion 8KCAB (registry code 2121000, https://openairdocs.org/model/american-champion-8kcab) (OpenAirDocs)
- Registry engine: Lycoming AEIO-360 series (registry code 41522, https://openairdocs.org/engine/lycoming-aeio-360-series) (OpenAirDocs)
- Reported make and model: AMERICAN CHAMPION AIRCRAFT 8KCAB
- Reported engine: LYCOMING AEIO-360 SER
- People aboard: 2
- Fatal injuries: 2
- Other injuries: 0
- Pilot certificates: Commercial pilot, flight instructor
- NTSB investigation: [NTSB CEN22FA019](https://openairdocs.org/ntsb/CEN22FA019) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20211023018099A

## Narrative

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

MARENGO, WI (ASX): N843AC, AMERICAN CHAMPION (8KCAB), ACFT MAY HAVE BEEN CONDUCTING AEROBATIC MANEUVERS AND ACFT STRUCK THE ROOF OF A HOME. NO INJURIES ON GROUND. NO POST CRASH FIRE. POB: 2, INJURIES: 2 FATAL, DAMAGE: EXTENT UNKNOWN. ATC SERVICES: UNKN. 10/23/2021 1945Z

SEVERAL WITNESSES OBSERVED THE AIRCRAFT PERFORMING AEROBATIC MANEUVERS IN THE AREA PRIOR TO THE ACCIDENT.

## 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 CEN22FA019](https://openairdocs.org/ntsb/CEN22FA019), Oct 23, 2021: American Champion 8KCAB (N843AC), Marengo, WI, destroyed, 2 fatal. Probable cause: The pilot’s failure to maintain adequate airspeed during the steep turn, which resulted in the airplane exceeding its critical angle of attack and an aerodynamic stall. Also causal was the pilot’s…

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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