# NTSB MKC66A0012: Russell CG1, N7540U, Vichy, MO, August 19, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 19, 1964
- Place: Vichy, MO · VICHY, MO
- Location: 38.1114° N, 91.7604° W: Placed by OpenAirDocs: center of Vichy, MO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.1114&lon=-91.7604&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 1, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 181569
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC66A0012
- Page: https://openairdocs.org/ntsb/MKC66A0012

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0634  64/8/19    VICHY MO            RUSSELL CG1         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 43, 1000
        TIME - 1530                    N7540U              PX-  0  0  0  PRACTICE                  TOTAL HOURS, 4 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - ROLLA NATIONAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: MUSH                                              IN FLIGHT: LOW PASS
           ROLL OVER                                                LANDING: ROLL-ON/RUN-ON
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
                                  SUSPECTED MECHANICAL DISCREPANCY
        REMARKS- LANDED TO RIGHT OF RUNWAY ON SOFT SOD.
```

## Aircraft

- Registration: [N7540U](https://openairdocs.org/deregistered/N7540U-1970-04-29), registration cancelled 1970-04-29, S/N 569 (OpenAirDocs)
- Reported make and model: RUSSELL CG1
- Registry model: [Russell Gyroplane C.G. 1](https://openairdocs.org/model/russell-gyroplane-c-g-1) (registry code 0560214) (OpenAirDocs)
- Category: Helicopter, amateur-built
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Rolla National

## Other investigations on N7540U (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 CHI68A0017](https://openairdocs.org/ntsb/CHI68A0017), Aug 13, 1967: Russell CGI (N7540U), Three Rivers, MI, 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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