ANC95LA143 · Waco UPF-7
Classic Air Ventures Waco UPF-7 · Accident: loss of engine power on approach
From Lake Hood Airport (Z41) to an unrecorded destination
Event
- NTSB case
- ANC95LA143
- 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
Waco UPF-7
- Aircraft type
- Waco UPF-7
- 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
- N134Q
- Operator
- Classic Air Ventures
- Onboard fatalities
- Unknown
- Route
- From Lake Hood Airport (Z41)To 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 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
- Approach · VFR pattern downwind
- 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
- Loss of engine power
- 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
- Fuel system, primer system › Unlocked
- Pilot in command › Preflight planning/preparation, inadequate
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE PILOT WAS CONCLUDING A SIGHTSEEING FLIGHT WITH TWO PASSENGERS IN AN OPEN COCKPIT BIPLANE. WHILE IN A DOWNWIND LANDING PATTERN AT MIDFIELD AND 700 FEET ABOVE THE GROUND, THE ENGINE SUDDENLY QUIT. THE PILOT WAS UNABLE TO LAND ON THE RUNWAY AND PERFORMED AN EMERGENCY LANDING INTO AN OPEN FIELD ADJACENT TO THE RUNWAY. DURING THE LANDING, THE AIRPLANE ENCOUNTERED SOFT MUSKEG, BRUSH AND SMALL TREES. IT CAME TO REST NOSE DOWN IN A NEAR VERTICAL POSITION. AN EXAMINATION OF THE ENGINE REVEALED NO MECHANICAL MALFUNCTION. THE ENGINE PRIMER WAS FOUND IN THE UNLOCKED POSITION.
Probable cause
THE PILOT'S INADEQUATE PREFLIGHT PLANNING/PREPARATION, WHICH RESULTED IN AN UNLOCKED ENGINE PRIMER AND SUBSEQUENT LOSS OF ENGINE POWER.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ANC95LA143
- Event ID
- 20001207X04137
- Case number
- ANC95LA143
- 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: local date, investigation status. Values present in the bulk record are kept.
- The date is the local date; the NTSB stores the UTC date 1995-08-18.
- API snapshot SHA-256: ffcdc64a479a20bfbcf53b336783b9c052a945c4e75e6dbbdf5d4a6e010e3bd8; retrieved 2026-09-21T13:08:38.111Z.