# NTSB MKC89LA052: Stinson 108-1, N8726K, South St. Paul, MN, January 16, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 15, 1989, 18:00 local (Jan 16, 1989, 00:00 UTC)
- Place: South St. Paul, MN
- Coordinates: 44.880142, -93.040206 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=44.8801&lon=-93.0402&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 28, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 34746
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC89LA052
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34746/pdf
- Page: https://openairdocs.org/ntsb/MKC89LA052

## Probable cause

THE FAILURE OF THE PILOT TO MAINTAIN DIRECTIONAL CONTROL OF THE AIRPLANE. CONTRIBUTING TO THE ACCIDENT WERE THE CROSSWIND CONDITIONS.

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - weather condition - crosswind (contributing factor)
  - aircraft control - not maintained, pilot in command (cause)
- On ground/water encounter with terrain/water, landing - roll
- Nose down, landing - roll

## Analysis

WHILE ATTEMPTING TO LAND PARALLEL TO RUNWAY 34 ON A SOD, SNOW COVERED RUNWAY, AT NIGHT, THE SKI EQUIPPED AIRCRAFT LOST DIRECTIONAL CONTROL, GROUND LOOPED, AND ENDED UP ON IT'S NOSE. A 50 DEGREE LEFT CROSSWIND OF ABOUT 20 KNOTS EXISTED AT THE TIME.

## Aircraft

- Registration: [N8726K](https://openairdocs.org/deregistered/N8726K-2013-05-15), registration cancelled 2013-05-15, S/N 108-1726, built 1947 (OpenAirDocs)
- Reported make and model: STINSON 108-1
- Registry model: [Universal Stinson 108-1](https://openairdocs.org/model/universal-stinson-108-1) (registry code 9230414) (OpenAirDocs)
- Registry engine: [Franklin 6A4150 series](https://openairdocs.org/engine/franklin-6a4150-series) (registry code 27024, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 180-1726
- Airframe hours: 2366
- Engines: FRANKLIN 6A4-150-B3 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Troedson, Wesley M.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, March 8, 1988, 35 hours before
- Departed: RNH, NEW RICHMOND, WI
- Airport: D97, South St. Paul, runway 34, 4,000 × 100 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 296 total, 67 in this make and model, 296 as pilot in command, 12 in the last 90 days, 8 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 290° at 20 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 28 °F, dew point -0 °F

## 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 19890115000679A](https://openairdocs.org/incident/19890115000679A), Jan 15, 1989: Univar 1081, South St Paul, MN, Substantial damage. Landed ski equipped aircraft on snow covered sod adjacent to runway. Too much crosswind.

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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