# NTSB OAK71DVA34: Aero Comdr A-9B, N7633V, Dos Palos, CA, October 2, 1970

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: October 2, 1970
- Place: Dos Palos, CA · DOS PALOS, CA
- Location: 36.9854° N, 120.6338° W: Placed by OpenAirDocs: center of Dos Palos, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.9854&lon=-120.6338&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report June 29, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 141872
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK71DVA34
- Page: https://openairdocs.org/ntsb/OAK71DVA34

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3733   70/10/2   DOS PALOS,CALIF     AERO COMDR A-9B     CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 34, 3500
        TIME - 0810                    N7633V              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 30 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          DOS PALOS,CALIF             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: SWATH RUN
           COLLIDED WITH: DITCHES                                   LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - FUEL SYSTEM: FUEL INJECTION SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - FUEL STARVATION
           TERRAIN - ROUGH/UNEVEN
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 2500                       KIND OF OPERATION - DEFOLIATION (LIQUID)
          KIND OF CROP - COTTON                                    TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  125                 SWATH RUN-HOW FLOWN - CROSSWIND
        REMARKS- DIAPHRAM IN FUEL MANIFOLD VALVE ASSY RUPTURED. BOTH TANKS HAD FUEL.
```

## Aircraft

- Registration: [N7633V](https://openairdocs.org/deregistered/N7633V-1971-03-30), registration cancelled 1971-03-30, S/N 1361 (OpenAirDocs)
- Reported make and model: AERO COMDR A-9B
- Registry model: [Aero Commander CALLAIR A-9B](https://openairdocs.org/model/aero-commander-callair-a-9b) (registry code 0144206) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

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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