CHI05FA199 · Glasair GS-2
Glasair GS-2 · Accident: abrupt maneuver on approach
From Wautoma, WI to Wautoma, WI
Event
- NTSB case
- CHI05FA199
- 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
- 1 · 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
Glasair GS-2
- Aircraft type
- Glasair GS-2
- 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
- N105TW
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Wautoma, WITo Wautoma, WI
- 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 base
- 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
- Abrupt maneuver
- 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
- Stall
- 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
- Pilot in command › Airspeed, not maintained
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The pilot was flying a local demonstration flight in the airport pattern to be filmed by a camera crew. The aircraft conducted a steep climbout after takeoff from runway 26, turned downwind, and reduced power at a downwind altitude of about 300-500 feet above ground level. The aircraft then made a number of yaws, then entered a steep left turn, an increase in power was heard, and then the aircraft impacted the terrain in about an 80 degree left bank. A post impact fire occurred. Inspection of the airframe, engine, propeller, and flight controls disclosed no evidence of any peimpact failure or malfunction.
Probable cause
the abrupt maneuver that was performed while failing to maintain airpeed, resulting in a stall, and uncontrolled impact with the ground without sufficient altitude to recover.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI05FA199
- Event ID
- 20050801X01130
- Case number
- CHI05FA199
- 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: 53a2851c0c8ed55974e07f9b31385257ba94683e2f2a8eabad659d834cd74ad8; retrieved 2026-09-20T17:57:46.296Z.