CHI94LA079 · Roberts RV-6A
Roberts RV-6A · Accident: loss of engine power on approach
From Grand Glaize Osage Beach Airport (K15) to M034 · MO
Event
- NTSB case
- CHI94LA079
- 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
Roberts RV-6A
- Aircraft type
- Roberts RV-6
- 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
- N63JR
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Grand Glaize Osage Beach Airport (K15), Camdenton, MOTo M034 · 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 · VFR pattern final
- 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
- Pilot in command › Operation with known deficiencies in equipment, performed
- Reason for occurrence undetermined
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE PILOT REPORTED THAT HE FLEW THE HOMEBUILT AIRPLANE LOCALLY FOR ABOUT 45 MINUTES, THEN MADE A FULL STOP LANDING AT ANOTHER AIRPORT. SOON THEREAFTER, HE ELECTED TO TAKEOFF ON THE RETURN FLIGHT. HE STATED THAT WHEN HE APPLIED FULL THROTTLE TO TAKE OFF, THE ENGINE STOPPED RUNNING. THE PILOT RESTARTED THE ENGINE, USING THE PRIMER, BUT IT QUIT RUNNING AGAIN SHORTLY AFTER STARTING. HE RESTARTED THE ENGINE AGAIN AND THIS TIME IT CONTINUED RUNNING. THE PILOT PERFORMED A FULL STATIC RUN-UP. FINDING NOTHING WRONG DURING THE RUN-UP, HE TOOK OFF AND FLEW BACK TO THE HOME AIRPORT. WHILE ON FINAL APPROACH TO LAND, THE ENGINE LOST POWER AGAIN. DURING A SUBSEQUENT EMERGENCY LANDING, THE AIRPLANE COLLIDED WITH TREES AND THE TERRAIN. AN ON-SCENE INVESTIGATION REVEALED A CLEAN AND FUNCTIONAL FUEL SYSTEM. THE TEMPERATURE AND DEW POINT WERE 56 AND 24 DEGREES, RESPECTIVELY, WHICH WOULD HAVE BEEN MARGINALLY CONDUCIVE FOR CARBURETOR ICE. NO PREIMPACT MECHANICAL PROBLEM WAS FOUND THAT WOULD HAVE RESULTED IN THE LOSS OF POWER.
Probable cause
LOSS OF ENGINE POWER (DURING FLIGHT) FOR AN UNDETERMINED REASON, AFTER THE PILOT EXPERIENCED LOSS OF ENGINE POWER BEFORE TAKEOFF FOR AN UNKNOWN REASON.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI94LA079
- Event ID
- 20001206X00729
- Case number
- CHI94LA079
- 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: 21860d3b1f759c4ed59824bde1010434d83c559ab6ff55797e3e55b7ced30946; retrieved 2026-09-21T14:04:49.023Z.