ERA21LA228 · Robert Trembly JA20 HIGHLANDER
Robert Trembly JA20 HIGHLANDER · Accident: fuel exhaustion en route
From Bowling Green Warren County Regional Airport (BWG) to Mount Vernon Outland Airport (MVN)
Event
- NTSB case
- ERA21LA228
- 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
- Event fatalities
- Unknown
- 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
Robert Trembly JA20 HIGHLANDER
- Aircraft type
- Robert Trembly JA20
- 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
- N743BT
- Operator
- Trembly Robert
- Onboard fatalities
- Unknown
- Route
- From Bowling Green Warren County Regional Airport (BWG), Bowling Green, KYTo Mount Vernon Outland Airport (MVN), Mt. Vernon, IL
- Aircraft age
- About 2 years (built 2019)
- 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
- 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
- Fuel exhaustion
- 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 systems
- Personnel issues › Task performance
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot had just purchased fuel at a self-serve gas pump prior to departure on a cross country flight. About an hour after he departed, the engine stopped producing power and he made a forced landing to a soybean field. The airplane’s nose gear collapsed, and the airplane flipped over on to its back resulting in substantial damage to the left and right wings. The pilot reported that following the accident, the left-wing fuel cap was missing and that neither fuel tank contained any fuel. While the pilot said that he replaced both fuel caps after he fueled the airplane, the left wing fuel cap was later found next to the gas pump where he pumped the fuel. A functional test of the cap revealed that it fit securely to the left-wing fuel port. As a result, it is most likely that the pilot failed to properly install the left-wing fuel cap after refueling the airplane, which resulted in loss of engine power due to fuel exhaustion in-flight.
Probable cause
The pilot’s failure to properly secure the left wing fuel cap before flight, which resulted in a loss of engine power due to fuel exhaustion.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ERA21LA228
- Event ID
- 20210524103132
- Case number
- ERA21LA228
- 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, cause areas. 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: 30760122e163e84cc36f4ac31b799fe3ff328584561745eed385d65299254d2c; retrieved 2026-09-16T14:04:48.974Z.