NYC00LA091 · Aeronca 7AC
Aeronca 7AC · Accident: loss of engine power en route
From Robertson Field (4B8) to 6KN4 · KOBELT, NY
Event
- NTSB case
- NYC00LA091
- 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 7AC
- Aircraft type
- Aeronca 7
- 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
- N474HH
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Robertson Field (4B8), PAINVILLE, CTTo 6KN4 · KOBELT, NY
- 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
- En route · cruise
- 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 engine power
- Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
- Tree(s)
- 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
No findings designated as a cause are recorded in the NTSB data yet.
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
Twenty minutes after takeoff, and at a cruise altitude of 3,500 feet msl, the airplane's engine began to surge. The pilot attempted to identify the problem. He switched the magnetos on and off, and observed no change. He applied carburetor heat, but the engine ran even rougher so he selected carburetor heat off. After 5 minutes, the pilot cycled the fuel selector; simultaneously he experienced a further drop in engine power. Unable to make an airport, the pilot maneuvered the airplane to land in an open field. On final, the airplane struck trees short of the pilot's intended touchdown point, and then impacted the ground. A FAA Inspector stated that he rotated the propeller and obtained good compression. He added that the airplane was placard for auto-gas only, and that it was equipped with new magnetos, wires, and plugs. He also stated that the fuel inside the fuel tank smelled 'rancid.'
Probable cause
Loss of engine power for undetermined reasons.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record NYC00LA091
- Event ID
- 20001212X20718
- Case number
- NYC00LA091
- 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: 21eb56360d6de5a063a0fec640fab92d35b96225067384ed84cbdb979c8bf0fb; retrieved 2026-09-21T20:17:34.864Z.