GAA17CA549 · Cessna U206 G
Cessna U206 G · Accident: dragged wing/rotor/float/other during takeoff
From Chicken, AK to Tok Junction Airport (6K8)
Event
- NTSB case
- GAA17CA549
- 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
- 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
- Charter & commuter
- 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
Cessna U206 G
- Aircraft type
- Cessna 206
- 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
- N734GW
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Chicken, AKTo Tok Junction Airport (6K8), TOK, AK
- Aircraft age
- About 39 years (built 1978)
- 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 135: Air Taxi & Commuter
- 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
- Takeoff
- 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
- Dragged wing/rotor/float/other
- 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
- Environmental issues › Physical environment
- Personnel issues › Psychological
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot reported that, while taking off from a road, the airplane struck a road sign with its left wing. He explained that, during takeoff, the airplane had accelerated rapidly and that, in the next moment, he felt a lurch to the left. The parking brake, which he had forgotten to release, then released. He added that he had "incorrectly assumed" that the brake had grabbed and caused the lurch, not the unknown to him, sign strike. Subsequently, he corrected with rudder and continued the flight.
He added that the airplane flew "normally" but that it had a "slightly left-wing heavy feel." He continued the flight without further incident.
Postaccident examination of the airplane revealed that it had sustained substantial damage to the left wing.
The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.
Probable cause
The pilot’s failure to maintain clearance from a sign while taking off from a road.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record GAA17CA549
- Event ID
- 20170907X51721
- Case number
- GAA17CA549
- 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. 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: c9e9dc26dac6cd1d021364fe02f563d965208ef9615b964a99e4eb2aae3907eb; retrieved 2026-09-16T05:48:37.874Z.