# NTSB CHI83LA045: Pitts S1S, N22WB, Wonewoc, WI, November 21, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 21, 1982, 00:15 local (06:15 UTC)
- Place: Wonewoc, WI
- Coordinates: 43.649578, -90.21939 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.6496&lon=-90.2194&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report November 21, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 73086
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI83LA045
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/73086/pdf
- Page: https://openairdocs.org/ntsb/CHI83LA045

## Sequence of events

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

- Undershoot, approach - vfr pattern - final approach
  - terrain condition - high vegetation (contributing factor)
  - planned approach - improper, pilot in command (cause)
  - judgment - inaccurate, pilot in command (cause)
  - proper touchdown point - not attained, pilot in command (cause)
  - go-around - not performed, pilot in command (cause)
- Nose over, landing - flare/touchdown

## Analysis

THE PILOT STATED THAT WHEN HE TURNED ON FINAL AND SLIPPED THE AIRCRAFT TO LOSE ALTITUDE. WHILE REDUCING THE POWER TO IDLE THE GEAR TANGLED IN HIGH GRASS (WEEDS), CAUSING THE AIRCRAFT TO LOSE ADDITIONAL ALTITUDE. HE STATED THE AIRCRAFT TUMBLED FORWARD, STRIKING THE NOSE BEFORE FLIPPING OVER.

## Aircraft

- Registration: [N22WB](https://openairdocs.org/deregistered/N22WB-2014-09-16), registration cancelled 2014-09-16, S/N 1-WB, built 1981 (OpenAirDocs)
- Reported make and model: PITTS S1S
- Registry model: [Ballantine PITTS SPECIAL S-1S](https://openairdocs.org/model/ballantine-pitts-special-s-1s) (registry code 7220606) (OpenAirDocs)
- Registry engine: [Lycoming I0360 SER A&C](https://openairdocs.org/engine/lycoming-i0360-ser-a-c) (registry code 41511, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 1WB
- Airframe hours: 87
- Engines: LYCOMING IO-360-A4A 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: George Grisson
- Registered owner: George Grisson
- Departed: C, ROMEOVILLE, IL
- Destination: C, WONEWOC, IL
- Airport: 4D1, Three Castles

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; flight instructor, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; flight hours: 7,509 total, 9 in this make and model, 63 as pilot in command, 2 in the last 90 days, 1 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 20 statute miles
- Temperature: 41 °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 19821121059209A](https://openairdocs.org/incident/19821121059209A), Nov 21, 1982: Amtrpt PITTSSPECS1, Wonewoc, WI, Substantial damage. Landes hort of runway in tall weeds. Aircraft nosed over inverted.

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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