IAD05LA017 · Chumsae Kitfox Speedster
Chumsae Kitfox Speedster · Accident: total loss of engine power (non-mechanical) en route
From Dillant Hopkins Airport (EEN) to Sterling Airport (3B3)
Event
- NTSB case
- IAD05LA017
- 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
Chumsae Kitfox Speedster
- Aircraft type
- Chumsae KITFOX SPEEDSTER
- 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
- N124KF
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Dillant Hopkins Airport (EEN), Keene, NHTo Sterling Airport (3B3), Sterling, MA
- 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
- 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 exhaustion; 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 › Fuel consumption calculations, inadequate
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
While approaching the destination airport, the homebuilt airplane's Rotax engine began to sputter and then stopped completely. The pilot attempted to glide the airplane to the runway, but due to the descent rate, he elected to land in trees 100 feet short of it. Examination of the fuel tanks revealed that no fuel was present. The airplane was equipped with two 13-gallon fuel tanks and a 0.9-gallon header tank. Prior to his initial departure, the pilot estimated that the left fuel tank was 3/8 full and the right fuel tank was 1/4 full. He subsequently flew the airplane on two 45-minute flights before the engine stopped, and estimated the total engine running time to be 2 hours plus. He also estimated the fuel consumption rate of the engine to be about 3.7 to 4 gallons per hour based on fuel consumption calculations from previous flights. The airplane kit manufacturer stated that the engine consumed about 4.5 gallons of fuel per hour at a cruise power setting, and about 6 gallons of fuel per hour at a high power setting.
Probable cause
The pilot's inadequate fuel consumption calculations, which resulted in fuel exhaustion and a total loss of engine power.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record IAD05LA017
- Event ID
- 20041222X02022
- Case number
- IAD05LA017
- 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, coordinates. 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: 86d81ded78b3f19fa5eb24531e15f487b7b8d78539c36fd897f76a5929b2a70e; retrieved 2026-09-22T06:29:12.417Z.