ERA18FA189 · Rutan DEFIANT
Rutan DEFIANT · Accident: loss of control in flight on approach
From Robertson Field (4B8) to Robertson Field (4B8)
Event
- NTSB case
- ERA18FA189
- 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
Rutan DEFIANT
- Aircraft type
- Rutan DEFIANT
- 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
- N17DR
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Robertson Field (4B8), Plainville, CTTo Robertson Field (4B8), Plainville, CT
- Aircraft age
- About 14 years (built 2004)
- 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 go-around
- 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
- 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
- Substantial
Cause areas
- Not determined › Not determined
- 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
The private pilot, who was one of the builders of the twin-engine, experimental, amateur-built airplane, was conducting a local flight in the airport traffic pattern. A wing-mounted camera captured the ground operations and accident flight. After seemingly normal engine start and runup checks, the pilot departed to the north, remaining in the airport traffic pattern for a subsequent landing. While over the runway threshold on landing approach, he initiated a go-around. The airplane climbed left of the runway centerline, then entered a steep, descending left turn at varying angles of bank, some exceeding 60º. The airplane continued to descend in an erratic manner until it impacted the ground.
An examination of the aircraft systems and engines revealed no evidence of a preimpact anomaly or failure. There was ample fuel on board for the flight. The forward engine wooden propeller showed evidence of rotational damage. Although the aft engine propeller was generally undamaged, the crash dynamics and the aft mounting of the propeller assembly likely shielded it from damage during impact. Although conditions at the time of the accident were conducive to serious carburetor icing at glide power, an electronic engine monitor showed no evidence of a loss of engine power, nor did a sound spectrum study of the wing-mounted camera audio.
Autopsy and toxicology testing of the pilot revealed no evidence of physiological impairment or incapacitation, and the reason for the pilot's erratic and aggressive maneuvering after the go-around could not be determined.
Probable cause
The pilot's loss of airplane control during climb for reasons that could not be determined based on the available information.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ERA18FA189
- Event ID
- 20180712X20155
- Case number
- ERA18FA189
- 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, 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: 30719562257bccdd2dc5e8b57500b25cbc97efc5713cf37d90f94ea69d001728; retrieved 2026-09-15T06:44:04.641Z.