CHI88DEP08 · Monnett SONERAI II
Monnett SONERAI II · Accident: total loss of engine power (non-mechanical) during initial climb
From an unrecorded airport to Wittman Regional Airport (OSH)
Event
- NTSB case
- CHI88DEP08
- 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
Monnett SONERAI II
- Aircraft type
- Monnett SONERAI
- 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
- N79TG
- Operator
- Bernard Fried
- Onboard fatalities
- Unknown
- Route
- From not recordedTo Wittman Regional Airport (OSH), Oshkosh, WI
- 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
- Initial climb
- 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
- Total loss of engine power (non-mechanical)
- 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
- Fuel starvation
- 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
- Fluid, fuel › Starvation
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE PLT RPRTD THAT DRG TAKEOFF, THE ENG LOST POWER AS THE ACFT WAS CLIMBING THRU ABOUT 200' AGL. AN EMERG LNDG WAS MADE IN THE BEST AVAILABLE AREA, WHICH WAS A GOLF COURSE ON ROLLING TERRAIN. DRG THE LNDG ROLL, THE PLT APPLIED BRAKES, BUT WAS UNABLE TO STOP BEFORE THE ACFT WENT OVER A RIDGE WITH A STEEP DECLINING SLOPE BEYOND. AS THE ACFT WENT OVER THE RIDGE (DROP-OFF), IT BECAME AIRBORNE, THEN TOUCHED DOWN HARD & WAS DAMAGED WHERE THE TERRAIN BEGAN RISING AGAIN. THE ACFT HAD BEEN SVCD WITH AUTO FUEL. THE PLT BELIEVED THE ENG HAD LOST POWER DUE TO VAPOR LOCK. ACCORDING TO AC 91-33,AUTO FUEL IS MORE SUSCEPTIBLE TO VAPOR LOCK AT ELEVATED TEMPS. THE TEMP WAS 93 DEG. NO OTHER PART MALFUNCTION OR FAILURE WAS EVIDENT.
Verbatim NTSB analysis from the NTSB dataset
Sources
NTSB record CHI88DEP08
- Event ID
- 20001213X26474
- Case number
- CHI88DEP08
- 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: 0a595981a07354fddbc4f1885be1646b32afb2cd9ce5aebf7f087f4f865d8c80; retrieved 2026-09-23T09:22:05.027Z.