# NTSB CHI82DA359: Scorpion Too, N49JF, Sheboygan Falls, WI, September 19, 1982

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Final report
- Date: September 19, 1982, 11:00 local (16:00 UTC)
- Place: Sheboygan Falls, WI
- Coordinates: 43.719902, -87.819839 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.7199&lon=-87.8198&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report September 19, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 72607
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI82DA359
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/72607/pdf
- Page: https://openairdocs.org/ntsb/CHI82DA359

## Sequence of events

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

- Loss of control - in flight, takeoff - initial climb
  - rotor rpm - not maintained, pilot in command (cause)
- In flight collision with terrain/water, takeoff - initial climb

## Analysis

THE PILOT MADE A TURN AFTER TAKEOFF AND THE AIRCRAFT VIBRATED AND CRASHED. NO MALFUNCTION WAS FOUND.

## Aircraft

- Registration: [N49JF](https://openairdocs.org/deregistered/N49JF-1989-07-10), registration cancelled 1989-07-10, S/N 31577 (OpenAirDocs)
- Reported make and model: SCORPION TOO
- Registry model: [Trowbridge SCORPION TOO JF44](https://openairdocs.org/model/trowbridge-scorpion-too-jf44) (registry code 13025F4) (OpenAirDocs)
- Category: Helicopter, amateur-built
- Serial number: 31577
- Airframe hours: 55
- Engines: ROTORWAY RW-133 130 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Operator: Jeffrey Trowbridge
- Registered owner: Jeffrey Trowbridge
- Departed: SHEBOYGAN FALLS, WI
- Destination: SHEBOYGAN FALLS, WI

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 45; student, private; airplane ratings: single-engine land; medical: class 3, invalid medical for flight; flight hours: 110 total, 10 in this make and model, 90 as pilot in command, 15 in the last 90 days, 3 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 220° at 10 knots
- Visibility: 15 statute miles
- Temperature: 165 °F
- Altimeter: 29.00 inHg

## 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 19820919047399A](https://openairdocs.org/incident/19820919047399A), Sep 19, 1982: Amtrrw SCORPION2, Sheboygan, WI, Destroyed. Pilot lost control of helicopter on climbing turf after takeoff.

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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