# NTSB LAX77FUG17: Mooney M20C, N6423U, Big Bear City, CA, December 31, 1976

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 31, 1976
- Place: Big Bear City, CA · BIG BEAR CITY, CA
- Location: 34.2611° N, 116.8450° W: Placed by OpenAirDocs: center of Big Bear City, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=34.2611&lon=-116.8450&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report January 28, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 156759
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX77FUG17
- Page: https://openairdocs.org/ntsb/LAX77FUG17

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3745  76/12/31   BIG BEAR CITY,CA    MOONEY M20C         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 38, 2000
        TIME - 1800                    N6423U              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 925 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          BIG BEAR CITY,CA            HUNTINGTON BEACH,CA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: CLIMB TO CRUISE
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - WINDSHIELD,DIRTY,FOGGY,ETC.-RESTRICTED VISION
        FACTOR(S)
           WEATHER - OTHER
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      32
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
           5                                                       VFR
        TYPE OF FLIGHT PLAN
          NONE
        REMARKS- WINDSHIELD ICED OVER DUE TO COLD AIR AND LACK OF RAM AIR INTO DEICER SYSTEM INST CNDTN INSIDE ACFT
```

## Aircraft

- Registration: [N6423U](https://openairdocs.org/aircraft/N6423U), registered now, S/N 2170, built 1962 (OpenAirDocs)
- Reported make and model: MOONEY M20C
- Registry model: [Mooney M20C](https://openairdocs.org/model/mooney-m20c) (registry code 5870208) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Big Bear City

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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