WPR26LA173 · Pipistrel ALPHA TRAINER
Pipistrel ALPHA TRAINER · Accident: fuel exhaustion during initial climb
Event
- NTSB case
- WPR26LA173
- 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
Pipistrel ALPHA TRAINER
- Aircraft type
- Pipistrel ALPHA TRAINER
- 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
- N143AW
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From not recordedTo not recorded
- Aircraft age
- About 6 years (built 2020)
- 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
- 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 › Fluids/miscellaneous hardware
- Personnel issues › Task performance
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
According to the flight instructor and student pilot, they performed a preflight inspection which included viewing the visual fuel quantity indicators inside the cabin, which they observed the level to be full. The flight instructor reported that he did not check the fuel quantity by removing the fuel caps. After flying for about 39 minutes in the airport traffic pattern performing several takeoffs and landings, during an initial climb, the engine had a total loss of power about 250 ft above ground level. The flight instructor assumed the flight controls and chose an empty street near the airport to initiate a forced landing. Subsequently, the airplane landed hard, which resulted in substantial damage to the fuselage. Post accident examination of the airplane revealed that the fuel tanks contained no usable fuel, and the fuel system was intact with no evidence of leaks. The fuel sight gauges were a purple, transparent color, which would have likely made it difficult to see if fuel was present in the system. The pilot’s operating handbook indicated that fuel quantity should be checked both in the cabin and through the fuel cap on each wing during a preflight inspection.
Probable cause
The flight instructor’s inadequate preflight inspection which resulted in a total loss of engine power due to fuel exhaustion.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record WPR26LA173
- Event ID
- 20260504202929
- Case number
- WPR26LA173
- 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: local date, investigation status, coordinates, cause areas. Values present in the bulk record are kept.
- The date is the local date; the NTSB stores the UTC date 2026-04-18.
- API snapshot SHA-256: 98724bf85dc1e1fca0fbb1397faffec2db952e83cf3f4a7ab77443f2f6fe0052; retrieved 2026-09-16T21:23:00.883Z.