# NTSB investigations: Aeronca 11AC, MI

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 GAA17CA347](https://openairdocs.org/ntsb/GAA17CA347.md): Aeronca 11AC · Watervliet, MI · Accident · Minor injuries · Data collection · Final report · Jun 16, 2017 · N9404E · Substantial damage
  > The flight instructor's inadequate preflight planning, which resulted in a takeoff over maximum gross weight from a turf runway in high density altitude conditions and the airplane’s inability to attain a climb rate and subsequent collision with trees.
- [NTSB CEN16FA269](https://openairdocs.org/ntsb/CEN16FA269.md): Aeronca 11AC · Ishpeming, MI · Accident · 2 fatal · Field investigation · Final report · Jul 19, 2016 · N85893 · Substantial damage
  > The pilot's failure to maintain airspeed following a loss of engine power due to carburetor icing while turning from base to final at a low altitude, which resulted in the airplane's wing exceeding its critical angle of attack and a subsequent aerodynamic…
- [NTSB CEN16FA240](https://openairdocs.org/ntsb/CEN16FA240.md): Aeronca 11AC · Frankenmuth, MI · Accident · 2 fatal · Field investigation · Final report · Jul 3, 2016 · N86078 · Destroyed
  > The pilot's loss of control for undetermined reasons based on available information.
- [NTSB CEN14LA387](https://openairdocs.org/ntsb/CEN14LA387.md): Aeronca 11AC · Flushing, MI · Accident · Minor injuries · Limited investigation · Final report · Jul 22, 2014 · N4453P · Substantial damage
  > The pilot receiving instruction’s failure to maintain directional control during the takeoff roll. Contributing to the accident was the flight instructor not having access to brake controls, which limited his ability to regain directional control at slower…
- [NTSB CEN09LA567](https://openairdocs.org/ntsb/CEN09LA567.md): Aeronca 11AC · Marshall, MI · Accident · No injuries · Limited investigation · Final report · Sep 5, 2009 · N3383E · Substantial damage
  > The failure of the main landing gear attach point.
- [NTSB CHI03LA235](https://openairdocs.org/ntsb/CHI03LA235.md): Aeronca 11AC · Brighton, MI · Accident · No injuries · Limited investigation · Final report · Jul 29, 2003 · N86233 · Substantial damage
  > The pilot's directional control not possible resulting from the rudder control assembly separation during the landing. A factor was the construction vehicle that the airplane impacted.
- [NTSB CHI02LA057](https://openairdocs.org/ntsb/CHI02LA057.md): Aeronca 11AC · Lake Leelanau, MI · Accident · No injuries · Limited investigation · Final report · Jan 3, 2002 · N302AC · Substantial damage
  > The improper planning/decision in runway selection. The soft runway condition and wet snow were contributing factors.
- [NTSB CHI99LA318](https://openairdocs.org/ntsb/CHI99LA318.md): Aeronca 11BC · Watervliet, MI · Accident · No injuries · Limited investigation · Final report · Aug 28, 1999 · N9404E · Substantial damage
  > the pilot not maintaining aircraft control during takeoff, and the pilot not correcting for the porpoise.
- [NTSB CHI96FA290](https://openairdocs.org/ntsb/CHI96FA290.md): Aeronca 11AC · Charlotte, MI · Accident · 2 fatal · Field investigation · Final report · Aug 9, 1996 · N85825 · Destroyed
  > the pilot's improper use of engine controls (carburetor heat and/or throttle), while making a relatively high speed approach, low pass, and pull-up, which resulted in partial loss of engine power; and failure of the pilot to maintain sufficient airspeed after…
- [NTSB CHI91DEM06](https://openairdocs.org/ntsb/CHI91DEM06.md): Aeronca 11-AC · Central Lake, MI · Accident · 1 fatal · Final report · Jul 11, 1991 · N86083 · Destroyed
  > A result of the pilot in command not maintaining aircraft control and not performing remedial action after the airplane entered the steep descent. A factor contributing to this accident was the pilot in command's lack of recent experience.
- [NTSB CHI75DEM32](https://openairdocs.org/ntsb/CHI75DEM32.md): Aeronca 11AC · Ontonagon, MI · Accident · No injuries · Closed · Mar 19, 1975 · N85931 · Substantial damage
- [NTSB CHI74FEM55](https://openairdocs.org/ntsb/CHI74FEM55.md): Aeronca 11AC · Grand Rapids, MI · Accident · Minor injuries · Closed · Apr 27, 1974 · N9572E · Substantial damage
- [NTSB CHI74FEM36](https://openairdocs.org/ntsb/CHI74FEM36.md): Aeronca 11AC · Charlotte, MI · Accident · No injuries · Closed · Jan 12, 1974 · N86078 · Substantial damage
- [NTSB CHI70DBM10](https://openairdocs.org/ntsb/CHI70DBM10.md): Aeronca 11AC · Niles, MI · Accident · No injuries · Closed · Apr 5, 1970 · N86353 · Substantial damage
- [NTSB CHI70F0220](https://openairdocs.org/ntsb/CHI70F0220.md): Aeronca 11AC · Reed City, MI · Accident · No injuries · Closed · Aug 29, 1969 · N86031 · Substantial damage
- [NTSB CHI70D0119](https://openairdocs.org/ntsb/CHI70D0119.md): Aeronca 11AC · Grand Haven, MI · Accident · No injuries · Closed · Jul 18, 1969 · N9671E · Substantial damage
- [NTSB CHI69A0085](https://openairdocs.org/ntsb/CHI69A0085.md): Aeronca 11AC · Alto, MI · Accident · 1 fatal · Closed · Apr 7, 1969 · N9674E · Destroyed
- [NTSB CHI69F0050](https://openairdocs.org/ntsb/CHI69F0050.md): Aeronca 11AC · Newport, MI · Accident · No injuries · Closed · Jul 4, 1968 · N3644E · Substantial damage
- [NTSB CHI67F0238](https://openairdocs.org/ntsb/CHI67F0238.md): Aeronca 11AC · Greenville, MI · Accident · No injuries · Closed · Oct 9, 1966 · N9808E · Substantial damage
- [NTSB CHI67F0032](https://openairdocs.org/ntsb/CHI67F0032.md): Aeronca 11AC · Kalamo, MI · Accident · No injuries · Closed · Jun 12, 1966 · N85825 · Substantial damage
- [NTSB UNK65X0714](https://openairdocs.org/ntsb/UNK65X0714.md): Aeronca 11AC · Ontanagon, MI · Accident · No injuries · Closed · Nov 15, 1964 · N3264E · Substantial damage
- [NTSB UNK64X0375](https://openairdocs.org/ntsb/UNK64X0375.md): Aeronca 11AC · East Tawas, MI · Accident · No injuries · Closed · Jan 26, 1964 · N9813E · Substantial damage
- [NTSB UNK64X0166](https://openairdocs.org/ntsb/UNK64X0166.md): Aeronca 11AC · Napoleon, MI · Accident · No injuries · Closed · Jan 5, 1964 · N9172E · Substantial damage

## 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."eventStateOrRegion" = 'MI' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('0191102'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=0191102&state=MI

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