# Accident 20000122041379A: Robsin R22BETA, East Troy, WI, January 22, 2000

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: January 22, 2000, 10:00 local time
- Place: East Troy, WI
- Airport: East Troy Municipal Airport
- Damage: Substantial damage
- Phase of flight: To Running(Helicopter/Vtol Ac)
- Operating rules: General operating rules (Part 91)
- Location: 42.7799° N, 88.3894° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=42.7799&lon=-88.3894&mi=10
- Aircraft: N4047C (not matched to a registry record)
- Reported make and model: ROBSIN R22BETA
- Reported engine: LYC O320B2C
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 3,300 total, 1,800 in this make and model, 120 in the last 90 days
- NTSB investigation: [NTSB CHI00LA060](https://openairdocs.org/ntsb/CHI00LA060) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20000122041379A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(.19) ON JANUARY 22, 2000, AT 0945 CENTRAL STANDARD TIME, A ROBINSON R-22B, N4047C, OPERATED BY WW HELICOPTERS LLC, OF EAST TROY, WISCONSIN, SUSTAINED SUBSTANTIAL DAMAGE DURING AN IN-FLIGHT COLLISION WITH TERRAIN FOLLOWING A LOSS OF CONTROL DURING TAKEOFF FROM RUNWAY 18 (1,900 FEET BY 150 FEET, SNOW-COVERED/GRASS) AT THE EAST TROY MUNICIPAL AIRPORT, EAST TROY, WISCONSIN. VISUAL METEOROLOGICAL CONDITIONS PREVAILED AT THE TIME OF THE ACCIDENT. THE INSTRUCTIONAL FLIGHT WAS CONDUCTED UNDER THE PROVISIONS OF 14 CFR PART 91 AND WAS NOT ON A FLIGHT PLAN. THE CERTIFIED FLIGHT INSTRUCTOR (CFI) RECEIVED MINOR INJURIES. THE DUAL STUDENT REPORTED NO INJURIES. THE LOCAL FLIGHT WAS DEPARTING AT THE TIME OF THE ACCIDENT. ACCORDING TO THE CFI'S WRITTEN STATEMENT, THEY WERE PRACTICING A RUNNING TAKEOFF ON RUNWAY 18 AND AFTER TRAVERSING APPROXIMATELY TEN FEET OF THE TAKEOFF RUN THE STUDENT APPLIED RIGHT PEDAL INPUT. THE CFT STATED THAT HE TRIED TO OVERCOME THE STUDENT'S RIGHT PEDAL INPUT BY DEPRESSING THE LEFT PEDAL INPUT AND VERBALLY COMMANDING THE STUDENT TO DO THE SAME. THE CFR REPORTED THAT HE WAS UNABLE TO COUNTERACT THE STUDENTS CONTROL INPUT AND THE AIRCRAFT YAWED TO THE RIGHT. THE HELICOPTER'S LEFT SKID IMPACTED THE TERRAIN, THE AIRCRAFT ROLLED ONTO ITS LEFT SIDE, AND SLID FOR 15-FEET BEFORE COMING TO REST. (-23) CFI STATED THAT HE WAS INSTRUCTING STUDENT IN A RUNNING TAKEOFF. THE STUDENT APPLIED RIGHT PEDAL, AND THE CFI WAS UNABLE TO OVERCOME THE STUDENT'S INPUT. THE HELICOPTER THEN YAWED RIGHT, AND THE LEFT SKID CAUGHT ON THE RUNWAY, CAUSING THE HELICOPTER TO ROLL ONTO IT'S LEFT SIDE.

## The NTSB's investigation of this event (1)

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.

- [NTSB CHI00LA060](https://openairdocs.org/ntsb/CHI00LA060), Jan 22, 2000: Robinson R-22B (N4047C), East Troy, WI, substantial damage. Probable cause: The proper alignment not being maintained by the dual student during an attempted running takeoff and the inadequate supervision of the pilot-in-command (CFI).

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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