CEN11LA514 · Evens RV4
Evens RV4 · Accident: loss of engine power (total) on approach
From Air Evac 139 Heliport (2TS6) to Captain Ben Smith Airfield - Monroe City Airport (K52)
Event
- NTSB case
- CEN11LA514
- 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
- Unknown
- 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
Evens RV4
- Aircraft type
- Evens RV4
- 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
- N20JE
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Air Evac 139 Heliport (2TS6), Midlothian, TXTo Captain Ben Smith Airfield - Monroe City Airport (K52), Monroe City, MO
- 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
- Approach
- Defining eventThe 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 (total)
- 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
- Aircraft › Aircraft power plant
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot stated that before the airplane descended to an intermediate cruise altitude, he selected carburetor heat and noted a normal decrease in engine speed. He then deselected carburetor heat and descended to 5,500 feet mean sea level. About 20 minutes after the descent, the engine ran rough and subsequently lost power. The pilot was unable to regain engine power by changing fuel tanks and he performed a forced landing to a corn field. Examination of the airplane revealed no anomalies that would have resulted in a loss of engine power. The conditions about the time of the accident were conducive to carburetor icing at glide power. The reason for the loss of engine power could not be determined.
Probable cause
A total loss of engine power for undetermined reasons.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CEN11LA514
- Event ID
- 20110727X15755
- Case number
- CEN11LA514
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
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: 0743e3642760e37a5c60565f81c97f795086ad5343cbd13c6bf3bbf320bf8122; retrieved 2026-09-15T16:31:07.912Z.