# NTSB DEN82DA051: Cessna 182K, N2478Q, St. Ignatius, MT, March 29, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: March 29, 1982, 12:25 local (19:25 UTC)
- Place: St. Ignatius, MT
- Coordinates: 47.319713, -114.019401 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=47.3197&lon=-114.0194&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report March 29, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 72697
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN82DA051
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/72697/pdf
- Page: https://openairdocs.org/ntsb/DEN82DA051

## Sequence of events

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

- Overrun, takeoff
  - wing - ice (contributing factor)
  - preflight planning/preparation - improper, pilot in command (cause)
  - weather condition - tailwind (contributing factor)
  - lowering of flaps - improper, pilot in command (cause)
  - aborted takeoff - delayed, pilot in command (cause)
  - stall/mush - inadvertent, pilot in command
- On ground/water encounter with terrain/water, takeoff
  - terrain condition - ditch

## Analysis

THE PILOT STATED THAT HE AND HIS PASSENGERS ATTEMPTED TO REMOVE AS MUCH SNOW AS POSSIBLE FROM THE AIRCRAFT AND THAT HE WAS CONFIDENT THAT THE PROPELLER BLAST WOULD BLOW AWAY WHATEVER SNOW REMAINED. ALTHOUGH THE WIND AT SURROUNDING STATIONS WAS GENERALLY REPORTED OUT OF THE NORTHWEST THE PILOT REPORTED THE WIND OUT OF THE EAST ON TAKEOFF. THE PILOT ELECTED TO TAKEOFF WITH 10 DEGREES OF FLAPS, THE MANUAL STATES TO USE 20 DEGREES TO REDUCE GROUND RUN ON SOFT FIELD TAKEOFFS. DURING TAKEOFF THE AIRCRAFT WAS HELD ON THE RUNWAY UNTIL 70 MPH IAS BEFORE ROTATION WAS ATTEMPTED. THIS IS 10 MPH OVER NORMAL ROTATION SPEED AND WAS USED TO COMPENSATE FOR THE STATED TAILWIND. THE AIRCRAFT LIFTED BRIEFLY OFF THE GROUND THEN SETTLED BACK ON THE RUNWAY. POWER WAS PULLED AND THE AIRCRAFT SLID OFF THE END OF THE RUNWAY AND NOSED DOWN INTO THE BANK OF A SMALL CREEK.

## Aircraft

- Registration: [N2478Q](https://openairdocs.org/aircraft/N2478Q), registered now, S/N 18257678, built 1966 (OpenAirDocs)
- Reported make and model: CESSNA 182K
- Registry model: [Cessna 182K](https://openairdocs.org/model/cessna-182k) (registry code 2072724) (OpenAirDocs)
- Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 18257678
- Airframe hours: 3412
- Engines: CONTINENTAL O-470-R 230 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: George Clark/Dean Jellison
- Registered owner: George Clark/Dean Jellison
- Departed: 52S, ST. IGNATIUS, MT
- Destination: KALISPELL, MT
- Airport: 52S, St. Ignatius Municipal, runway 26, 2,500 × 60 ft, gravel

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 147 total, 99 in this make and model, 113 as pilot in command, 11 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 310° at 10 knots
- Visibility: 40 statute miles
- Lowest ceiling: 4,500 ft broken
- Temperature: 104 °F
- Altimeter: 29.00 inHg
- Observed at: MSO, 25 nm away

## Other investigations on N2478Q (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 DEN80FTA20](https://openairdocs.org/ntsb/DEN80FTA20), Aug 23, 1980: Cessna 182 (N2478Q), Winifred, MT, substantial damage

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.

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