# NTSB LAX70DUG46: Rockford Twistr, N111S, Chino, CA, June 13, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 13, 1970
- Place: Chino, CA · CHINO, CA
- Location: 33.9763° N, 117.6745° W: Placed by OpenAirDocs: center of Chino, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.9763&lon=-117.6745&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report April 8, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 119007
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX70DUG46
- Page: https://openairdocs.org/ntsb/LAX70DUG46

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2603  70/6/13    CHINO,CALIF         ROCKFORD TWISTR     CR-  0  0  1  MISCELLANEOUS             STUDENT, AGE 42, 116
        TIME - 1403                    N111S               PX-  0  0  0  TEST                      TOTAL HOURS, 3 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - CHINO
        DEPARTURE POINT             INTENDED DESTINATION
          CHINO,CALIF                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: OTHER
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: POWERPLANT FAILURE FOR UNDETERMINED REASONS
           PILOT IN COMMAND - IMPROPER COMPENSATION FOR WIND CONDITIONS
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
        REMARKS- LOW OIL PRESS,EXCESSIVELY HIGH TEMP,CAUSE UNK.L GR COLLAPSED ON LDG.FLT NOT ENDORSED.FLT PHASE UNK
```

## Aircraft

- Registration: [N111S](https://openairdocs.org/deregistered/N111S-2011-07-21), registration cancelled 2011-07-21, S/N 001, built 1969 (OpenAirDocs)
- Reported make and model: ROCKFORD TWISTR
- Registry model: [Burleson ROCKFORD TWISTER](https://openairdocs.org/model/burleson-rockford-twister) (registry code 05611FF) (OpenAirDocs)
- Registry engine: [Lycoming 0-145B series](https://openairdocs.org/engine/lycoming-0-145b-series) (registry code 41502, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Chino

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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