# NTSB CHI83LA404: Mockrud Volksplane, N4244R, Cottage Grove, WI, August 31, 1983

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: August 31, 1983, 16:00 local (21:00 UTC)
- Place: Cottage Grove, WI
- Coordinates: 43.080276, -89.199012 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.0803&lon=-89.1990&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12326
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI83LA404
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12326/pdf
- Page: https://openairdocs.org/ntsb/CHI83LA404

## Sequence of events

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

- Miscellaneous/other, takeoff
  - flight controls - improper use of, pilot in command (contributing factor)
  - lift-off - inadvertent, pilot in command (contributing factor)
- Loss of engine power, takeoff - initial climb
  - reason for occurrence undetermined (cause)
- Forced landing, landing - flare/touchdown
- In flight collision with terrain/water, landing - flare/touchdown

## Analysis

THE OWNER OF THE NEW HOME BUILT ACFT HAD GIVEN THE PLT PERMISSION TO TAXI THE PLANE, BUT NOT TO TAKEOFF. THE PLT STATED THAT HE INADVERTENTLY BECAME AIRBORNE WHILE MAKING A HIGH SPEED TAXI CHECK, THEN THE ENG LOST POWER. A WITNESS STATED THAT THE ACFT BECAME AIRBORNE WHEN IT WAS APRX HALF WAY DOWN THE RWY, THEN IT CLIMBED ABOUT 30 FT, TRAVELED APRX 250 FT OFF THE END OF THE RWY & BEGAN LOSING ALTITUDE. THE PLT INITIATED A LEFT TURN & CRASHED IN AN OPEN FIELD. THE ACFT HAD NO PREVIOUS FLT TIME & THE PLT HAD NO PREVIOUS FLT TIME IN THE MAKE & MODEL. DURING THE INVESTIGATION, THE PLT & OWNER COULD NOT BE CONTACTED TO VERIFY THE CIRCUMSTANCES OF THE REPORTED ENG FAILURES.

## Aircraft

- Registration: [N4244R](https://openairdocs.org/deregistered/N4244R-1983-11-17), registration cancelled 1983-11-17, S/N 22 (OpenAirDocs)
- Reported make and model: MOCKRUD VOLKSPLANE
- Registry model: [Mockrud Stanley C VP-1](https://openairdocs.org/model/mockrud-stanley-c-vp-1) (registry code 05635C3) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 22
- Engines: Volkswagen 1 60 horsepower reciprocating
- Damage: Destroyed
- Flight: Part 91
- Registered owner: Stanley Mockrud
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Unknown, July 13, 1983
- Airport: 52C, Flying Hoof, runway 9, 2,650 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 64; airline transport, commercial; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 34,555 total, 33,355 as pilot in command, 5 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 20° at 14 knots
- Visibility: 8 statute miles
- Lowest ceiling: none
- Temperature: 75 °F, dew point 63 °F
- Altimeter: 30.00 inHg
- Observed at: MKE, 45 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 19830831045539A](https://openairdocs.org/incident/19830831045539A), Aug 31, 1983: Amtrev VOLKSPLNEVP1, Cottage Grove, WI, Destroyed. Owner gave pilot taxi permission only. Pilot inadvertently became airborne on high speed taxi and lost control.

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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