# NTSB UNK64X1392: Boeing A75N1, N56921, Nelson, CA, April 20, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 20, 1964
- Place: Nelson, CA · NELSON, CA
- Location: 39.5521° N, 121.7655° W: Placed by OpenAirDocs: center of Nelson, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.5521&lon=-121.7655&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 14, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 184341
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X1392
- Page: https://openairdocs.org/ntsb/UNK64X1392

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0986  64/4/20    NELSON CALIF        BOEING A75N1        CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 26, 2700
        TIME - 1000                    N56921              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 1500 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - MCKNIGHT STRIP
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: DITCHES                                   TAKEOFF: ABORTED
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OTHER AIRCRAFT
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
           MISCELLANEOUS - EVASIVE MANEUVER TO AVOID COLLISION
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 1200                       KIND OF OPERATION - FERTILIZING (DUST)
          KIND OF CROP - BEANS                                     TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GOGGLES - USED
          CRASH HELMET - AVAILABLE USED                            COCKPIT CRASHPAD - INSTALLED
          CRASH BAR - NOT INSTALLED                                TANK/HOPPER-LOCATION - FORWARD OF PILOT
          ELEVATION-AREA BEING TREATED-FEET -  180
        REMARKS- BOTH PILOTS ON TAKEOFF ROLL FROM OPPOSITE ENDS OF FIELD
```

## Aircraft

- Registration: [N56921](https://openairdocs.org/deregistered/N56921-1973-06-25), registration cancelled 1973-06-25, S/N 75-2138 (OpenAirDocs)
- Reported make and model: BOEING A75N1
- Registry model: [Boeing A75N1](https://openairdocs.org/model/boeing-a75n1) (registry code 1380165) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Mcknight Strip

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.