# NTSB CHI68D0481: Cessna 310F, N6720X, Waukesha, WI, December 4, 1967

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 4, 1967
- Place: Waukesha, WI · WAUKESHA, WI
- Location: 43.0091° N, 88.2451° W: Placed by OpenAirDocs: center of Waukesha, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.0091&lon=-88.2451&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report January 26, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 113005
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI68D0481
- Page: https://openairdocs.org/ntsb/CHI68D0481

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4261   67/12/4   WAUKESHA,WIS        CESSNA 310F         CR-  0  0  2  INSTRUCTIONAL             ATP,FLIGHT INSTR., AGE
        TIME - 1455                    N6720X              PX-  0  0  1  DUAL                      36, 3000 TOTAL HOURS, 250
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - WAUKESHA COUNTY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           WHEELS-UP                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           DUAL STUDENT - INADVERTENTLY RETRACTED GEAR
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
        REMARKS- GR RETRACTED PRIOR TO TOUCHDOWN.
```

## Aircraft

- Registration: [N6720X](https://openairdocs.org/aircraft/N6720X), registered now, S/N 310-0020, built 1960 (OpenAirDocs)
- Reported make and model: CESSNA 310F
- Registry model: [Cessna 310F](https://openairdocs.org/model/cessna-310f) (registry code 2074216) (OpenAirDocs)
- Registry engine: [Continental I0-470 series](https://openairdocs.org/engine/continental-i0-470-series) (registry code 17027, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Waukesha County

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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