# NTSB CHI92DER03: Schneider/Brashear Sorrell SNS-7, N226HB, Alexandria, MN, August 9, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: August 9, 1992, 15:30 local (20:30 UTC)
- Place: Alexandria, MN
- Coordinates: 45.869171, -95.369812 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.8692&lon=-95.3698&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 26, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 15249
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI92DER03
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15249/pdf
- Page: https://openairdocs.org/ntsb/CHI92DER03

## Probable cause

THE PILOT'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL DURING THE LANDING ROLL.

## Sequence of events

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

- Gear collapsed, landing - roll
  - weather condition - tailwind
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - inadvertent, pilot in command
- Main gear collapsed, landing - roll
- On ground/water encounter with terrain/water, landing - roll

## Analysis

THE PILOT STATED '...DURING THE ROLLOUT WITH THE TAILWHEEL ON THE GROUND THE AIRCRAFT BECAME UNCONTROLLABLE AND TURNED TO THE RIGHT.'  THE AIRCRAFT TURNED ABOUT 270 DEGREES BEFORE IT CAME TO A STOP.  THE LEFT MAIN LANDING GEAR COLLAPSED DURING THE TURN.  THE PILOT LANDED ON RUNWAY 13.  THE WINDS WERE REPORTED TO BE OUT OF 340 DEGREES AT 7 TO 8 KNOTS. THERE WAS NO EVIDENCE OF PRE-EXISTING MECHANICAL ANOMALY.

## Aircraft

- Registration: [N226HB](https://openairdocs.org/aircraft/N226HB), registered now, S/N 226 (OpenAirDocs)
- Reported make and model: SCHNEIDER/BRASHEAR SORRELL SNS-7 (SORRELL SN)
- Registry model: [Schneider-Brashear SORRELL SNS-7](https://openairdocs.org/model/schneider-brashear-sorrell-sns-7) (registry code 05655AS) (OpenAirDocs)
- Registry engine: [Lycoming IO-360-C1D6](https://openairdocs.org/engine/lycoming-io-360-c1d6) (registry code 41834, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 226
- Airframe hours: 520
- Engines: LYCOMING IO-360-C1D6 200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Olson, Eugene And Darlene
- Registered owner: Olson, Eugene And Darlene
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, April 25, 1992, 50 hours before
- Airport: AXN, Chandler Field, runway 13, 5,180 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; flight instructor, commercial, flight engineer, airline transport; airplane ratings: single-engine sea, single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 21,775 total, 250 in this make and model, 12,857 as pilot in command, 25 in the last 90 days, 10 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 340° at 8 knots
- Visibility: 10 statute miles
- Lowest ceiling: 3,000 ft broken
- Temperature: 84 °F, dew point 72 °F
- Altimeter: 29.00 inHg
- Observed at: AXN, 1 nm away

## 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 19920809029759A](https://openairdocs.org/incident/19920809029759A), Aug 9, 1992: Amtrhy SNS7, Alexandria, MN, Substantial damage. Swerved on landing. Side load collapsed left main gear and aircraft ground looped damaging wing.

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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