# NTSB OAK78FA054: Grum Amer AA-1C, N9812U, Bear Valley, CA, September 16, 1978

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: September 16, 1978
- Place: Bear Valley, CA · BEAR VALLEY, CA
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report December 12, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 139882
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK78FA054
- Page: https://openairdocs.org/ntsb/OAK78FA054

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3168  78/9/16    BEAR VALLEY,CA      GRUM AMER AA-1C     CR-  1  0  0  INSTRUCTIONAL             STUDENT, AGE 24, 43 TOTAL
        TIME - 1032                    N9812U              PX-  1  0  0  TRAINING                  HOURS, ALL IN TYPE, NOT
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - BEAR VALLEY
        DEPARTURE POINT             INTENDED DESTINATION
          COLUMBIA,CA                 BEAR VALLEY,CA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: TREES                                     LANDING: GO-AROUND
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - DELAYED IN INITIATING GO-AROUND
        FACTOR(S)
           WEATHER - HIGH DENSITY ALTITUDE
           MISCELLANEOUS ACTS,CONDITIONS - POORLY PLANNED APPROACH
        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                                                      75
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
          CALM                                                     VFR
        TYPE OF FLIGHT PLAN
          NONE
        REMARKS- DA APRX 9600FT.
```

## Aircraft

- Registration: [N9812U](https://openairdocs.org/deregistered/N9812U-1982-04-15), registration cancelled 1982-04-15, S/N AA1C0135 (OpenAirDocs)
- Reported make and model: GRUM AMER AA-1C
- Registry model: [Grumman American Avn. AA-1C](https://openairdocs.org/model/grumman-american-avn-aa-1c) (registry code 3960100) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Bear Valley

## 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 19780916036839A](https://openairdocs.org/incident/19780916036839A), Sep 16, 1978: Gulstm AA1, Bear Valley, CA, Destroyed, 1 fatal. Da aprx 9600FT.

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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