# NTSB investigations: Aeronca 7AC: Aerodynamic stall/spin

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB ANC25LA084](https://openairdocs.org/ntsb/ANC25LA084.md): Aeronca 7AC · Willow, AK · Accident · Serious injuries · Class 3 · Limited · Preliminary report · Aug 6, 2025 · N84726 · Substantial damage
  > On August 5, 2025, about 1600 Alaska daylight time, an Aeronca 7AC airplane, N84726, was substantially damaged when it was involved in an accident at the Willow Airport (UUO) in Willow, Alaska. The student pilot sustained serious injuries. The airplane was…
- [NTSB ERA22FA391](https://openairdocs.org/ntsb/ERA22FA391.md): Aeronca 7AC · Jacksboro, TN · Accident · 1 fatal · Class 3 · Field · Final report · Aug 29, 2022 · N1478E · Destroyed
  > The pilot's exceedance of the airplane’s critical angle of attack during takeoff, which resulted in an aerodynamic stall and loss of control.
- [NTSB ERA22LA244](https://openairdocs.org/ntsb/ERA22LA244.md): Aeronca 7AC · Monongahela, PA · Accident · Serious injuries · Class 3 · Limited · Final report · May 27, 2022 · N84583 · Substantial damage
  > The pilot’s exceedance of the airplane’s critical angle of attack during the initial climb, which resulted in an aerodynamic stall.
- [NTSB CEN21FA377](https://openairdocs.org/ntsb/CEN21FA377.md): Aeronca 7AC · Fort Worth, TX · Accident · 2 fatal · Class 3 · Field · Final report · Aug 21, 2021 · N1472E · Substantial damage
  > The pilot’s exceedance of the airplane’s critical angle of attack during the initial climb, which resulted in an aerodynamic stall. Contributing to the accident was the pilot’s inadequate preflight planning, which resulted in an exceedance of the airplane’s…
- [NTSB GAA18CA257](https://openairdocs.org/ntsb/GAA18CA257.md): Aeronca 7AC · Warrenton, VA · Accident · No injuries · Data collection · Final report · May 6, 2018 · N83581 · Substantial damage
  > The pilot’s failure to maintain adequate airspeed and his exceedance of the airplane’s critical angle of attack during the takeoff initial climb, which resulted in an aerodynamic stall.
- [NTSB ERA18FA141](https://openairdocs.org/ntsb/ERA18FA141.md): Aeronca 7AC · Middletown, NY · Accident · 1 fatal · Field investigation · Final report · May 5, 2018 · N84396 · Substantial damage
  > The pilot's exceedance of the airplane's critical angle of attack during climbout, which resulted in an aerodynamic stall from which the pilot could not recover.
- [NTSB ERA12CA019](https://openairdocs.org/ntsb/ERA12CA019.md): Aeronca 7AC · Manassas, VA · Accident · Minor injuries · Data collection · Final report · Oct 22, 2011 · N4300E · Substantial damage
  > The pilot did not maintain adequate airspeed while turning to the downwind leg, which resulted in an aerodynamic stall and spin.
- [NTSB CEN10LA031](https://openairdocs.org/ntsb/CEN10LA031.md): Aeronca 7AC · Gaylord, MI · Accident · 2 fatal · Limited investigation · Final report · Oct 27, 2009 · N2239E · Destroyed
  > The pilot's failure to maintain adequate airspeed during a low altitude turn resulting in an aerodynamic stall/spin and loss of control.
- [NTSB WPR09CA388](https://openairdocs.org/ntsb/WPR09CA388.md): Aeronca 7AC · Broadus, MT · Accident · No injuries · Data collection · Final report · Aug 7, 2009 · N84787 · Substantial damage
  > The pilot’s failure to maintain sufficient airspeed during low altitude maneuvering, which resulted in an inadvertent stall.

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('2110102')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '241' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/241/sequence?model=2110102

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