GAA18CA336 · Aviat Aircraft Inc A 1 B
Aviat Aircraft Inc A 1 B · Accident: loss of control on ground during takeoff
From Will Rogers Wiley Post Memorial Seaplane Base (W36) to Victoria
Event
- NTSB case
- GAA18CA336
- 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
- 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
Aviat Aircraft Inc A 1 B
- Aircraft type
- Aviat A-1
- 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
- N352AM
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Will Rogers Wiley Post Memorial Seaplane Base (W36), Renton, WATo Victoria
- Aircraft age
- About 15 years (built 2003)
- 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
- 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
- Loss of control on ground
- 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
- Aircraft › Aircraft oper/perf/capability
- Personnel issues › Task performance
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot of the float-equipped airplane reported that, during takeoff from a tower-controlled waterway in gusting crosswind conditions, he felt the wind direction shift as the airplane started to lift off. He added that a strong wind gust then lifted the left wing, and the right wing dipped and impacted the water. He reduced power and shut the engine off. The impact had damaged the float connecting rod. The airplane came to rest upright on both floats, but the left float then separated from the fuselage, and the airplane sank.
The airplane sustained substantial damage to the left wing lift strut.
The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.
The automated weather observation system about 1 nautical mile from the accident site reported that, about the time of the accident, the wind was from 170° at 7 knots with thunderstorms in the vicinity. According to the pilot, the tower had reported the possibility of gusts up to 20 knots. The pilot was departing the waterway to the east/southeast.
Probable cause
The pilot’s inadequate crosswind correction, which resulted in the right wing impacting the water’s surface.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record GAA18CA336
- Event ID
- 20180611X83311
- Case number
- GAA18CA336
- 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: 3cd03e12cbec50db0d6d17162200246c63973fccce1783a050b3a259d0620dec; retrieved 2026-09-16T07:26:48.216Z.