# NTSB CHI82FA267: Robinson R22, N9031F, Milwaukee, WI, July 23, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: July 23, 1982, 13:15 local (18:15 UTC)
- Place: Milwaukee, WI
- Location: 43.1104° N, 88.0344° W: Placed by OpenAirDocs at LAWRENCE J TIMMERMAN (MWC), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.1104&lon=-88.0344&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report July 23, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 71717
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI82FA267
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71717/pdf
- Page: https://openairdocs.org/ntsb/CHI82FA267

## Sequence of events

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

- In flight collision with terrain/water, hover
  - rotorcraft flight controls - improper use of, dual student (cause)
  - supervision - inadequate, pilot in command(cfi) (cause)
- Roll over, hover
  - landing gear,skid assembly - overload
  - landing gear,skid assembly - separation
  - rotor system,main rotor blade - overload
  - rotor system,main rotor blade - separation
  - misc rotorcraft,tail boom - overload
  - misc rotorcraft,tail boom - separation

## Analysis

AS THE STUDENT PLT WAS PRACTICING A HOVERING MANEUVER, THE ACFT STARTED MOVING TO THE LEFT & LOSING ALTITUDE SLOWLY. THE CFI WAS ADDING COLLECTIVE PITCH WHEN THE LEFT SKID CONTACTED THE GROUND & THE ACFT ROLLED OVER. THE LEFT SKID, M/R BLADES & TAILBOOM SEPARATED.

## Aircraft

- Registration: [N9031F](https://openairdocs.org/deregistered/N9031F-1984-07-06), registration cancelled 1984-07-06, S/N 0077 (OpenAirDocs)
- Reported make and model: ROBINSON R22
- Registry model: [Robinson Helicopter R22](https://openairdocs.org/model/robinson-helicopter-r22) (registry code 7640102) (OpenAirDocs)
- Category: Helicopter
- Serial number: 0077
- Airframe hours: 590
- Engines: LYCOMING HO-320-A2B 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Roto Flite Helicopter
- Registered owner: Roto Flite Helicopter
- Departed: MWC, MILWAUKEE, WI
- Destination: MWC, MILWAUKEE, WI
- Airport: MWC, Timmerman, runway 4, 2,295 × 280 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; commercial, flight instructor; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; flight hours: 2,500 total, 275 in this make and model, 2,336 as pilot in command, 101 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 40° at 6 knots
- Visibility: 15 statute miles
- Temperature: 162 °F
- Observed at: MWC

## 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 19820723031879A](https://openairdocs.org/incident/19820723031879A), Jul 23, 1982: Robsin R22, Milwaukee, WI, Substantial damage. Left skid touched ground during practice hover. Helicopter suffured dynamic rollover, collapsing the left skid.

## Other investigations on N9031F (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 CHI83FET01](https://openairdocs.org/ntsb/CHI83FET01), Aug 12, 1983: Robinson R-22 (N9031F), Wabash, IN, substantial damage

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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