# NTSB OAK69F0069: Boeing A75L-3, N56226, Knights Lndg, CA, July 19, 1968

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: July 19, 1968
- Place: Knights Lndg, CA · KNIGHTS LNDG, CA
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report January 23, 1969
- Report: Brief approved by the director
- NTSB case key (mKey): 108626
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK69F0069
- Page: https://openairdocs.org/ntsb/OAK69F0069

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4063  68/7/19    KNIGHTS LNDG,CAL    BOEING A75L-3       CR-  1  0  0  COMMERCIAL                COMMERCIAL, AGE 57, 9000
        TIME - 0530                    N56226              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 1000 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, INSTRUMENT RATED.
        NAME OF AIRPORT - ONSTOTT
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: WIRES/POLES                               IN FLIGHT: STARTING SWATH RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED CLEARANCE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SUNGLARE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 8500                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - UNKNOWN/NOT REPORTED                      TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - USED
          GOGGLES - 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 -  20                  SWATH RUN-HOW FLOWN - WIND CALM
         FIRE AFTER IMPACT
        REMARKS- STRUCK LOWEST OF 3 SETS OF WIRES 28 FT AGL. TOXICOLOGY DISCLOSED NO HUMAN FACTOR INVOLVEMENT.
```

## Aircraft

- Registration: [N56226](https://openairdocs.org/aircraft/N56226), registered now, S/N 75-888, built 1941 (OpenAirDocs)
- Reported make and model: BOEING A75L-3
- Registry model: [Boeing A75L3](https://openairdocs.org/model/boeing-a75l3) (registry code 1380102) (OpenAirDocs)
- Registry engine: [Lycoming R680](https://openairdocs.org/engine/lycoming-r680) (registry code 41540, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Onstott

## Other investigations on N56226 (1)

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.

- [NTSB CEN13LA068](https://openairdocs.org/ntsb/CEN13LA068), Nov 20, 2012: Boeing A75L3 (N56226), San Antonio, TX, substantial damage. Probable cause: A partial loss of engine power during takeoff, likely due to the accumulation of carburetor ice.

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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