# NTSB SEA71DYG53: Boeing A75N, N56929, Waterville, WA, May 18, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 18, 1971
- Place: Waterville, WA · WATERVILLE, WA
- Location: 47.6480° N, 120.0707° W: Placed by OpenAirDocs: center of Waterville, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.6480&lon=-120.0707&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report January 20, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 161515
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA71DYG53
- Page: https://openairdocs.org/ntsb/SEA71DYG53

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1718  71/5/18    WATERVILLE,WASH     BOEING A75N         CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1545                    N56929              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   AGE 55, 15000 TOTAL
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            HOURS, 400 IN TYPE,
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - WATERVILLE
        DEPARTURE POINT             INTENDED DESTINATION
          WATERVILLE,WASH             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           COLLIDED WITH: DIRT BANK                                 LANDING: GO-AROUND
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN DIRECTIONAL CONTROL
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 9999                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - GRAIN FIELDS                              TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT
```

## Aircraft

- Registration: [N56929](https://openairdocs.org/deregistered/N56929-2014-10-28), registration cancelled 2014-10-28, S/N 75-1511 (OpenAirDocs)
- Reported make and model: BOEING A75N
- Registry model: [Boeing A75N1(PT17)](https://openairdocs.org/model/boeing-a75n1-pt17) (registry code 1380134) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Waterville

## Other investigations on N56929 (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 SEA81DYP42](https://openairdocs.org/ntsb/SEA81DYP42), Sep 17, 1981: Boeing A75N1 (N56929), Orondo, WA, 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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