SEA99LA091 · Cessna 180G
Cessna 180G · Accident: on ground/water encounter with weather during landing
From Missoula Montana Airport (MSO) to S27
Event
- NTSB case
- SEA99LA091
- 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
- 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
Cessna 180G
- Aircraft type
- Cessna 180
- 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
- N4707U
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Missoula Montana Airport (MSO), Missoula, MTTo S27
- 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
- Landing · landing roll
- 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
- On ground/water encounter with weather
- 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
- Compensation for wind conditions › Not possible
- Weather condition › Crosswind
- Weather condition › Gusts
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot reported that during landing roll on runway 31, 'a strong gust of wind hit the plane and lifted it up', and that 'when this happened the wind got under my left wing and lifted it up.' He stated that 'at this point the plane was moving [too] slow to have effective control to counter [the] wind and the right wing scraped the runway.' The pilot reported that no mechanical malfunction or failure was involved. Winds at a nearby airport were reported as southwesterly with gusts up to 21 knots, and a gust factor (gust speed minus sustained wind speed) of 7 to 11 knots, during the time frame of the accident.
Probable cause
An encounter with a crosswind gust, which was not possible to compensate for.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record SEA99LA091
- Event ID
- 20001212X19121
- Case number
- SEA99LA091
- 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: bb3c638cc32031b068673a420f0068def1a346cbe29f9d52b102b09a49219694; retrieved 2026-09-22T14:48:21.802Z.