DEN93LA077 · Weedhopper B
Weedhopper B · Accident: loss of control in flight while maneuvering
From No airport to No airport
Event
- NTSB case
- DEN93LA077
- 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
- 2 · 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
Weedhopper B
- Aircraft type
- Weedhopper B
- 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
- UNREG
- Operator
- Nowell, Charles C. SR · private individual
- Onboard fatalities
- Unknown
- Route
- From No airportTo No airport
- 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
- Maneuvering
- 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 control in flight
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Destroyed
Cause areas
- Wing, skin › Separation
- Wing, spar › Failure, total
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE UNREGISTERED AIRPLANE WAS SEEN TO MAKE A HARD LEFT TURN AND ENTER A VERTICAL DIVE FROM AN ALTITUDE OF BETWEEN 100 AND 150 FEET. AT AN ALTITUDE OF ABOUT 75 FEET, THE FABRIC SEPARATED FROM THE RIGHT WING AND THE WING FAILED. POST ACCIDENT INVESTIGATION DISCLOSED THE RUDDER CONTROL CABLE WAS FRAYED, HAD BROKEN, AND WAS OF THE WRONG SIZE. THE WING FABRIC WAS DETERIORATED, HAD BEEN PREVIOUSLY PATCHED, WAS OF THE WRONG TYPE AND WEIGHT, AND BORE SPANWISE TEARS. THE WING SPAR HAD FAILED AT A POINT WHERE PREVIOUS REPAIRS HAD BEEN MADE. ADDITIONALLY, THE WING RIBS WERE OF THE WRONG TYPE. THE PILOT HAD CONVERTED WHAT HAD BEEN A SINGLE PLACE ULTRALIGHT VEHICLE INTO A TWO PLACE AIRPLANE BY USING PARTS FROM WRECKED ULTRALIGHTS, CAUSING THE EMPTY WEIGHT TO EXCEED THE MAXIMUM ALLOWABLE.
Probable cause
THE FAILURE OF THE WING FABRIC AND WING SPAR. FACTORS WERE: THE IMPROPER DESIGN CHANGE, MAJOR REPAIR, AND REBUILDING OF THE AIRCRAFT BY THE PILOT IN COMMAND.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DEN93LA077
- Event ID
- 20001211X12890
- Case number
- DEN93LA077
- 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: 904e35bf64ffd16ac26b924456e74ead3a75b96ec32896ddf89125cb02c8bb0d; retrieved 2026-09-21T00:28:26.664Z.