# NTSB CHI94LA208: Stinson 108-3, N6808M, Warren, MN, June 21, 1994

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 21, 1994, 15:00 local (20:00 UTC)
- Place: Warren, MN
- Coordinates: 48.190052, -96.760093 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=48.1901&lon=-96.7601&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report January 12, 1995
- Report: Approved by Office Director
- NTSB case key (mKey): 9576
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI94LA208
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/9576/pdf
- Page: https://openairdocs.org/ntsb/CHI94LA208

## Probable cause

the pilot's improper use of the parking brake.

## Sequence of events

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

- Loss of control - on ground/water, landing - flare/touchdown
  - parking brakes - improper use of, pilot in command (cause)
- Nose over, landing - flare/touchdown

## Analysis

THE PILOT STATED THE BRAKES LOCKED UP ON TOUCHDOWN WHICH RESULTED IN THE AIRPLANE GROUNDLOOPING AND NOSING OVER.  POST ACCIDENT INSPECTION OF THE AIRPLANE REVEALED THE PARKING BRAKE WAS SET.

## Factual narrative

On June 21, 1994, at 1500 central daylight time, a Stinson 108-3, N6808M, registered to the Pete Hapka Seed Farm, nosed over during a landing on runway 30 at the Warren Municipal Airport, Warren, Minnesota, while on a personal flight.  Visual meteorological conditions prevailed and no flight plan was filed.  The airplane was substantially damaged and the pilot was not injured.  The flight originated from Warren, Minnesota, on June 21, 1994.

The pilot stated he was having problems with the brakes prior to takeoff.  According to the pilot, the brakes locked up on touchdown which resulted in the airplane groundlooping and nosing over.

The airplane was inspected by an Airframe and Powerplant mechanic who holds Inspection Authorization.  He reported finding the parking brake set in the ON position in the cockpit.  He also reported that skid marks were visible on the newly blacktopped runway.

Two NTSB 6120.1/2 Forms were sent to the pilot to be completed.  As of the date of this report, neither form has been received by the NTSB.

## Aircraft

- Registration: [N6808M](https://openairdocs.org/aircraft/N6808M), registered now, S/N 108-4808, built 1948 (OpenAirDocs)
- Reported make and model: STINSON 108-3
- Registry model: [Stinson 108-3](https://openairdocs.org/model/stinson-108-3) (registry code 9230408) (OpenAirDocs)
- Registry engine: [Franklin 6A4165 series](https://openairdocs.org/engine/franklin-6a4165-series) (registry code 27025, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 108-4808
- Engines: FRANKLIN 6A4-165 165 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Pete Hapka Seed Farm
- Airworthiness certificate: Standard, Normal
- Departed: D37
- Airport: D37, Warren Municipal Airport, runway 30, 3,205 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 1, unknown

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 15 statute miles
- Lowest ceiling: none

## 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 19940621016279A](https://openairdocs.org/incident/19940621016279A), Jun 21, 1994: Univar 1083, Warren, MN, Substantial damage. Reported incident because brakes locked on landing. Found parking brake on.

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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