# NTSB OAK66F0237: Boeing A-75N1, N57271, Colusa, CA, April 25, 1966

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 25, 1966
- Place: Colusa, CA · COLUSA, CA
- Location: 39.2000° N, 122.0095° W: Placed by OpenAirDocs: center of Colusa, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.2000&lon=-122.0095&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report May 9, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 172576
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK66F0237
- Page: https://openairdocs.org/ntsb/OAK66F0237

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0675  66/4/25    COLUSA CALIF        BOEING A-75N1       CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 35, 7500
        TIME - 1500                    N57271              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 3500 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: PROPELLER                       IN FLIGHT: SWATH RUN
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - PROPELLER AND ACCESSORIES: BLADES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - UNKNOWN/NOT REPORTED       KIND OF OPERATION - SEEDING CROPS
          KIND OF CROP - RICE                                      TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - NOT USED
          GOGGLES - USED                                           CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - INSTALLED                             CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  230                 SWATH RUN-HOW FLOWN - UNKNOWN/NOT REPORTED
        REMARKS- PROPELLER BLADE SEPARATED 9 INCHES FROM TIP
```

## Aircraft

- Registration: [N57271](https://openairdocs.org/aircraft/N57271), registered now, S/N 75-807, built 1940 (OpenAirDocs)
- Reported make and model: BOEING A-75N1
- Registry model: [Boeing A75N1(PT17)](https://openairdocs.org/model/boeing-a75n1-pt17) (registry code 1380134) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (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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