# NTSB investigations: Aeronca 11AC, 1999

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 LAX00LA046](https://openairdocs.org/ntsb/LAX00LA046.md): Aeronca 11AC · Sedona, AZ · Accident · No injuries · Limited investigation · Final report · Nov 29, 1999 · N3933E · Substantial damage
  > The pilot's inadequate compensation for the crosswind conditions and subsequent failure to maintain directional control of the airplane.
- [NTSB FTW99LA267](https://openairdocs.org/ntsb/FTW99LA267.md): Aeronca 11AC · Van Horn, TX · Accident · No injuries · Limited investigation · Final report · Sep 9, 1999 · N9044E · Substantial damage
  > A restriction within the auxiliary fuel supply system and the rough terrain during the subsequent precautionary landing resulting on main gear collapse.
- [NTSB DEN99LA161](https://openairdocs.org/ntsb/DEN99LA161.md): Aeronca 11BC · Heber City, UT · Accident · No injuries · Limited investigation · Final report · Sep 1, 1999 · N86096 · Substantial damage
  > The pilot's failure to maintain aircraft control during takeoff roll. Factors were the gusting crosswind conditions, and the airport sign.
- [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 FTW99LA227](https://openairdocs.org/ntsb/FTW99LA227.md): Aeronca 11AC · Rockwall, TX · Accident · No injuries · Limited investigation · Final report · Aug 14, 1999 · N3184E · Substantial damage
  > The mechanic's improper machining of the crankshaft during a major overhaul, which resulted in a fatigue crack and subsequent failure of the crankshaft. A factor was the lack of suitable terrain for the forced landing.
- [NTSB IAD99LA055](https://openairdocs.org/ntsb/IAD99LA055.md): Aeronca 11BC · Millbrook, NY · Accident · No injuries · Limited investigation · Final report · Jul 17, 1999 · N3756E · Substantial damage
  > was the pilot's inadequate compensation for winds and his failure to maintain directional control.

## 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 year(c."eventDate") = 1999
  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&year=1999

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