CHI83LU011 · Pioneer FLIGHTSTAR
Pioneer FLIGHTSTAR · Accident: partial loss of engine power (mechanical failure) while maneuvering
From Robinson Municipal Airport (RSV) to an unrecorded destination
Event
- NTSB case
- CHI83LU011
- 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
Pioneer FLIGHTSTAR
- Aircraft type
- Pioneer FLIGHTSTAR
- Category
- Ultralight
- 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
- UNREG
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Robinson Municipal Airport (RSV), Robinson, ILTo 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 103: Ultralight
- 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
- Maneuvering · turn to reverse direction
- 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
- Partial loss of engine power (mechanical failure)
- 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; Stall
- 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
- Fuel system, line › Other
- Pilot in command › Airspeed, not maintained
- Pilot in command › Stall, inadvertent
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE PLT REPORTED THAT AFTER TAKING OFF, HE STAYED LOW OVER FARM FIELDS. HE REPORTED THAT HE TRAVELED ABOUT 1 1/4 MI FROM THE ARPT & DECIDED TO RETURN & LAND. HOWEVER, DURING A LEFT TURN, THE ULTRALIGHT VEHICLE CRASHED. THE PLT WAS SERIOUSLY INJURED & DID NOT REMEMBER DETAILS OF THE ACCIDENT AFTER REGAINING CONSCIOUSNESS. A GROUND WITNESS REPORTED THE ULTRALIGHT WAS FLYING SLOW WHEN THE NOSE PITCHED DOWN & IT ENTERED A SPIRAL & HIT THE GROUND. THE PLT STATED THAT HE BEGAN THE TURN WHILE AT APRX 75 TO 100 FT AGL & WAS INCREASING POWER WHEN THE RIGHT WING CAME UP & THE NOSE DROPPED. AN EXAM OF THE FLT CONTROLS SHOWED CONTINUITY THRU-OUT THE SYS. AN INSPECTION OF THE ENG REVEALED THE URETHANE HOSE WAS PINCHED & MELTED AT A LOCATION BETWEEN THE ENG CASE & THE PULSATING FUEL PUMP. A FURTHER INVESTIGATION REVEALED THAT ON A 50 DEG DAY, THE TEMP IN THAT AREA WOULD BE APRX 175 TO 200 DEG & THAT THE HOSE WOULD COLLAPSE & BECOME SEATED TOGETHER AT 200 DEG. THE TEMPERATURE ON THE DAY OF THE ACCIDENT WAS 98 DEG.
Verbatim NTSB analysis from the NTSB dataset
Sources
NTSB record CHI83LU011
- Event ID
- 20001214X44097
- Case number
- CHI83LU011
- 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: 244be3c3f795d29b50c15139f1c20e0c1b4bb97aa3f337e4912be6b861fe6e9a; retrieved 2026-09-21T17:48:56.656Z.