CHI90LA058 · Aeronca 11AC
Aeronca 11AC · Accident: loss of control on ground/water during landing
From RZT to an unrecorded destination
Event
- NTSB case
- CHI90LA058
- 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
- 0
- 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
Aeronca 11AC
- Aircraft type
- Aeronca 11
- 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
- N3647E
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From RZTTo not recorded
- Aircraft age
- Not recorded
- 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
- Landing · landing roll
- First occurrenceThe 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
- Loss of control on ground/water
- 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
- Pilot in command › Directional control, not maintained
- Pilot in command › Planning/decision, improper
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE STUDENT PILOT STATED THAT WHEN HE DEPARTED THE ARPT, THE WX & RWY CONDITIONS WERE FAIR TO GOOD. HE NOTED THAT ALTHOUGH THE WEATHER WAS COLD, IT WAS SUNNY & THE COMPACTED SNOW ON THE RUNWAY WAS MELTING. THE STUDENT PRACTICED AIRWORK IN THE LOCAL AREA FOR ABOUT AN HOUR, THEN RETURNED TO THE ARPT, INTENDING TO PRACTICE TAKEOFFS & LANDINGS. HE REPORTED THAT HIS LANDING WAS NORMAL, BUT AS THE ACFT DECELERATED ON THE RUNWAY, IT ENCOUNTERED AN ICY AREA & HE WAS UNABLE TO MAINTAIN CONTROL. THE ACFT VEERED OFF THE LEFT SIDE OF THE RUNWAY & NOSED OVER ON SNOW COVERED TERRAIN. THE PLT STATED THAT THE SKY HAD CLOUDED OVER WHILE HE WAS AWAY FROM THE ARPT. WHEN HE RETURNED, THE PREVIOUSLY MELTED SNOW ON THE RUNWAY HAD 'GLAZED OVER' & WAS SLICK.
Probable cause
IMPROPER PLANNING/DECISION BY THE STUDENT PILOT, WHICH RESULTED IN A LANDING ON A SLICK RUNWAY, AND HIS FAILURE TO MAINTAIN DIRECTIONAL CONTROL DURING THE LANDING, WHICH RESULTED IN HIS INABILITY TO MAINTAIN RUNWAY ALIGNMENT. CONTRIBUTING FACTORS WERE: THE ICY/SNOW COVERED RUNWAY, SNOW COVERED TERRAIN BESIDE THE RUNWAY, AND THE STUDENT'S LACK OF EXPERIENCE IN WINTER OPERATIONS.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI90LA058
- Event ID
- 20001213X29942
- Case number
- CHI90LA058
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
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. 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: 9ca028499210c5aae6b1b4a299b9dae7416164249af3cc8e40dc8e69186b1cff; retrieved 2026-09-23T06:53:57.701Z.