SEA06TA152 · Cessna TU206G
Cessna TU206G · Accident: loss of control in flight during landing
From Boise Air Terminal/Gowen Field (BOI) to Deadwood Dam Airstrip (ID86)
Event
- NTSB case
- SEA06TA152
- 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
- Government
- 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 TU206G
- 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
- N5421X
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Boise Air Terminal/Gowen Field (BOI), Boise, IDTo Deadwood Dam Airstrip (ID86), Lowman, ID
- 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
- Public Aircraft
- 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 · flare/touchdown
- 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
- 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
- Pilot in command › Aircraft control, not possible
- Pilot in command › Descent, uncontrolled
- Weather condition › Downdraft
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 landing on a mountain dirt airstrip which did not have a wind sock on the approach end of the runway. The approach end of the runway terminated in a lake, and the runway proceeded uphill with a 6 percent grade. The pilot said that there was always a "sinker" where the runway meets the water. As the airplane went from over water to over the end of the runway, the pilot said the airplane was "really slammed down", and even with full takeoff power the airplane hit the ground hard. He said the airplane bounced about 20 yards to the right where the right wheel went into a ditch about 2 feet deep. He applied full left aileron, full left rudder, and full left brake. The wheel came out of the ditch, but the empennage "whacked" the ditch berm fairly hard. A Form 337 (major repair) was issued and the following parts were replaced: two skin pieces; two stringers; two frame bulkheads; one access door; and one tailcone assembly doubler.
Probable cause
The pilot's loss of aircraft control due to a downdraft on short final followed by an uncontrolled descent to a hard landing.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record SEA06TA152
- Event ID
- 20060814X01166
- Case number
- SEA06TA152
- 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: 548685d13bfe5c5a084fdad8100b6aaf5643921bc41690d8cfbdf296cb05acc1; retrieved 2026-09-18T21:14:52.924Z.