# NTSB CHI83LA423: Beemer Pitts S-1C, N46807, Portage, WI, August 6, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 6, 1983, 15:00 local (20:00 UTC)
- Place: Portage, WI
- Coordinates: 43.539127, -89.460983 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.5391&lon=-89.4610&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12341
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI83LA423
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12341/pdf
- Page: https://openairdocs.org/ntsb/CHI83LA423

## 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
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - inadvertent, pilot in command (cause)
  - inadequate transition/upgrade training, pilot in command (contributing factor)
- Nose over, landing - roll

## Analysis

THE ACFT HAD JUST BEEN PURCHASED & WAS BEING FERRIED TO PALATKA, FL. DURING THE LANDING ROLL AT AN EN ROUTE ARPT, THE ACFT GROUND LOOPED, AND SUBSEQUENTLY, CAME TO REST INVERTED. THE PLT STATED THAT THIS WAS HIS 1ST LANDING IN THE PITTS S-10 & THAT HE WAS UNFAMILIAR WITH ITS HIGH SPEED LANDING & TAXI CHARACTERISTICS.

## Aircraft

- Registration: [N46807](https://openairdocs.org/deregistered/N46807-2018-03-23), registration cancelled 2018-03-23, S/N 339H, built 1980 (OpenAirDocs)
- Reported make and model: BEEMER PITTS S-1C
- Registry model: [Beemer PITTS S-1C](https://openairdocs.org/model/beemer-pitts-s-1c) (registry code 7221156) (OpenAirDocs)
- Registry engine: [Lycoming IO-320 series](https://openairdocs.org/engine/lycoming-io-320-series) (registry code 41509, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 339H
- Airframe hours: 61
- Engines: LYCOMING IO-320-B1A 160 horsepower reciprocating
- Damage: Substantial damage
- Flight: Ferry, Part 91
- Registered owner: Charles A. Barrineau
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: 100 hour, July 28, 1983, 10 hours before
- Departed: 0WI4, MONTELLO, WI
- Airport: C47, Portage Municipal, runway 17, 3,360 × 40 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 29; commercial; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 1,738 total, 1 in this make and model, 1,610 as pilot in command, 161 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 84 °F

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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