# NTSB LAX71DVA20: Boeing 75, N4756V, Wasco, CA, August 14, 1970

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: August 14, 1970
- Place: Wasco, CA · WASCO, CA
- Location: 35.5938° N, 119.3671° W: Placed by OpenAirDocs: center of Wasco, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.5938&lon=-119.3671&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report December 10, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 113163
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX71DVA20
- Page: https://openairdocs.org/ntsb/LAX71DVA20

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1566  70/8/14    WASCO,CALIF         BOEING 75           CR-  0  1  0  COMMERCIAL                COMMERCIAL, AGE 38, 8200
        TIME - 0700                    N4756V              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 7000 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          WASCO,CALIF                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: PROCEDURE TURNAROUND
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: EMERGENCY DESCENT
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: CRANKSHAFT
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 7000                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - OTHER                                     TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - NOT USED
          GOGGLES - USED                                           CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  320                 SWATH RUN-HOW FLOWN - WIND CALM
          PROCEDURE TURNAROUND - FIRST 1/3 TURN
        REMARKS- CRANKSHAFT BROKE AT THRUST NUT AREA,PROP SEPARATED.
```

## Aircraft

- Registration: N4756V (not matched to a registry record)
- Reported make and model: BOEING 75
- 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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