# NTSB OAK74AP002: Beech V35, N3746Q, Sonoma, CA, July 7, 1973

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: July 7, 1973
- 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: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal, 1 serious, 2 uninjured
- Status: Completed, report August 29, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 189771
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK74AP002
- Page: https://openairdocs.org/ntsb/OAK74AP002

## NTSB brief (aircraft 2)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1560   73/7/7    SONOMA,CALIF        CHAMPION 7ECA       CR-  0  1  0  NONCOMMERCIAL             PRIVATE, AGE 32, 180
        TIME - 1500                    N5127T              PX-  2  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 40 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  2                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - SONOMA SKY PARK
        DEPARTURE POINT             INTENDED DESTINATION
          SONOMA,CALIF                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  LANDING: TRAFFIC PATTERN-CIRCLING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OTHER AIRCRAFT
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
         SPECIAL DATA
          SEGMENTS OF AVIATION INVOLVED - SMALL US GEN.AV.-SMALL US GEN.AV.
          CONTROLLING AGENCY - NO CONTROL                          RADAR CTL/SURVEILLANCE - RADAR SERVICE NOT AVAILABLE
          TRAFFIC ADVISORY ISSUED - NONE                           CONTROLLED/UNCONTROLLED AIRPORT - UNCONTROLLED AIRPORT
          CONTROL ZONE/AREA - NO                                   EVASIVE ACTION TAKEN - NO
        REMARKS- CHAMPION CRASHED INTO RESIDENTIAL GARAGE.BEECH HAD CTC WITH UNICOM.NO CTC WITH CHAMPION.
```

## NTSB brief (aircraft 1)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1560   73/7/7    SONOMA,CALIF        BEECH V35           CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 55, 3000
        TIME - 1500                    N3746Q              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, ALL IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  2  1  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - SONOMA SKY PARK
        DEPARTURE POINT             INTENDED DESTINATION
          FRESNO,CALIF                SONOMA,CALIF
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OTHER AIRCRAFT
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
         SPECIAL DATA
          SEGMENTS OF AVIATION INVOLVED - SMALL US GEN.AV.-SMALL US GEN.AV.
          CONTROLLING AGENCY - UNICOM                              RADAR CTL/SURVEILLANCE - RADAR SERVICE NOT AVAILABLE
          TRAFFIC ADVISORY ISSUED - NONE                           CONTROLLED/UNCONTROLLED AIRPORT - UNCONTROLLED AIRPORT
          CONTROL ZONE/AREA - NO                                   EVASIVE ACTION TAKEN - YES
        REMARKS- UNCONTROLLED ARPT.BEECH ON FINAL STRUCK BY CHAMPION TURNING FROM SHORT BASE LEG.BEECH LND OK.
```

## Aircraft 1

- Registration: [N3746Q](https://openairdocs.org/deregistered/N3746Q-2014-05-07), registration cancelled 2014-05-07, S/N D-8387, built 1967 (OpenAirDocs)
- Reported make and model: BEECH V35
- Registry model: [Beech V35](https://openairdocs.org/model/beech-v35) (registry code 1151538) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Sonoma Sky Park

## Aircraft 2

- Registration: [N5127T](https://openairdocs.org/deregistered/N5127T-1973-10-03), registration cancelled 1973-10-03, S/N 548 (OpenAirDocs)
- Reported make and model: CHAMPION 7ECA
- Registry model: [Champion 7ECA](https://openairdocs.org/model/champion-7eca) (registry code 21101NN) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Sonoma Sky Park

## FAA reports on this event (2)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19730707026462A](https://openairdocs.org/incident/19730707026462A), Jul 7, 1973: Beech V35, Sonoma, CA, Substantial damage. Uncontrolled arpt.Beech on final struck by champion turning from short base leg.Beech lnd ok.
- [Accident 19730707026461A](https://openairdocs.org/incident/19730707026461A), Jul 7, 1973: Blanca 7HC, Sonoma, CA, Destroyed, 2 fatal. Champion crashed into residential garage.Beech had ctc with UNICOM.no ctc with champion.

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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