# NTSB SEA83LA012: Cessna 206, N5183U, 40 Nm Wnw Salmo, ID, October 8, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: October 8, 1982, 13:00 local (19:00 UTC)
- Place: 40 Nm Wnw Salmo, ID
- Coordinates: 45.000488, -113.860694 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.0005&lon=-113.8607&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report October 8, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 69653
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA83LA012
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/69653/pdf
- Page: https://openairdocs.org/ntsb/SEA83LA012

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of control - on ground/water, takeoff - roll/run
  - weather condition - high density altitude (contributing factor)
  - airport facilities,runway/landing area condition - snow covered (contributing factor)
  - airport facilities,runway/landing area condition - slush covered (contributing factor)
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)
  - directional control - not possible, pilot in command
  - ground loop/swerve - uncontrolled, pilot in command

## Analysis

THE PILOT BEGAN A TAKEOFF FROM A RUNWAY COVERED WITH ABOUT SIX INCHES OF WET SNOW AND SLUSH IN CALM WIND CONDITIONS. HE REPORTED THAT DURING THE TAKEOFF, THE RIGHT MAIN WHEEL SETTLED BACK TO THE RUNWAY AND ENCOUNTERED AN AREA OF SOFT SNOW AND SLUSH. THE AIRCRAFT THEN VEERED TO THE RIGHT INTO DEEPER SNOW AND SUBSEQUENTLY DEPARTED THE RUNWAY AND WAS DAMAGED. THE AIRPORT ELEVATION WAS 7030 FT.

## Aircraft

- Registration: [N5183U](https://openairdocs.org/deregistered/N5183U-1991-08-21), registration cancelled 1991-08-21, S/N 2060183 (OpenAirDocs)
- Reported make and model: CESSNA 206
- Registry model: [Cessna 206](https://openairdocs.org/model/cessna-206) (registry code 2073302) (OpenAirDocs)
- Category: Airplane
- Serial number: 2060183
- Airframe hours: 2975
- Engines: CONTINENTAL IO-520-A 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Operator: Linn Air Service
- Registered owner: Linn Air Service
- Departed: U81, 40 NM WNW SALMO, ID
- Destination: SMN, SALMON, ID
- Flight plan: VFR
- Airport: U81, Cold Meadows Usfs, runway 17, 4,550 × 90 ft, dirt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 52; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; flight hours: 3,145 total, 2,000 in this make and model, 3,145 as pilot in command, 220 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 50 statute miles

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19821008056339A](https://openairdocs.org/incident/19821008056339A), Oct 8, 1982: Cessna 206CESSNA, Salmon, ID, Substantial damage. Pilot attempted takeoff from snow covered mountain strip. Could not maintain directional control due to snow.

## Other investigations on N5183U (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB SEA91FA186](https://openairdocs.org/ntsb/SEA91FA186), Jul 23, 1991: Cessna 206 (N5183U), Salmon, ID, destroyed, 5 fatal. Probable cause: IMPROPER INFLIGHT PLANNING AND DECISIONS AND FAILURE TO MAINTAIN AIRSPEED.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.