# NTSB OAK78DVD07: Champion 7ECA, N9082L, Sonoma, CA, October 25, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 25, 1977
- Place: Sonoma, CA · SONOMA, CA
- Location: 38.2903° N, 122.4598° W: Placed by OpenAirDocs: center of Sonoma, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.2903&lon=-122.4598&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report December 22, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 145578
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK78DVD07
- Page: https://openairdocs.org/ntsb/OAK78DVD07

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3494  77/10/25   SONOMA,CA           CHAMPION 7ECA       CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1415                    N9082L              PX-  0  0  0  DUAL                      AGE 27, 580 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            250 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - SONOMA VALLEY
        DEPARTURE POINT             INTENDED DESTINATION
          SONOMA,CA                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           NOSE OVER/DOWN                                           TAXI: TO TAKEOFF
        PROBABLE CAUSE(S)
           DUAL STUDENT - IMPROPER OPERATION OF BRAKES AND/OR FLIGHT CONTROLS
           WEATHER - UNFAVORABLE WIND CONDITIONS
        FACTOR(S)
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
        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                  RELATIVE BEARING OF WIND
          NONE                                                     TAIL WIND 158-202 DEGREES
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          270                                                       10
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- WIND GUSTS TO 15K. STUDENT BRIEFED ON USE OF BRAKES WHILE TAXIING.
```

## Aircraft

- Registration: [N9082L](https://openairdocs.org/aircraft/N9082L), registered now, S/N 781-70, built 1970 (OpenAirDocs)
- Reported make and model: CHAMPION 7ECA
- Registry model: [Champion 7ECA](https://openairdocs.org/model/champion-7eca) (registry code 21101NN) (OpenAirDocs)
- Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Sonoma 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 19771025036539A](https://openairdocs.org/incident/19771025036539A), Oct 25, 1977: Blanca 7ECA, Sonoma, CA, Substantial damage. Wind gusts to 15K. Student briefed on use of brakes while taxiing.

## Other investigations on N9082L (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 LAX95LA114](https://openairdocs.org/ntsb/LAX95LA114), Feb 20, 1995: Champion 7ECA (N9082L), Pacifica, CA, substantial damage. Probable cause: FAILURE OF THE GRUMMAN PILOT TO MAINTAIN VISUAL CONTACT AND CLEARANCE FROM THE CITABRIA, WHILE OVERTAKING THAT AIRCRAFT. FACTORS RELATING TO THE ACCIDENT WERE: THE HAZY SKY CONDITION AND THE GRUMMAN…

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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