# NTSB SEA79DYP33: Piper PA-25, N4603Y, Moses Lake, WA, July 6, 1979

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: July 6, 1979
- Place: Moses Lake, WA · MOSES LAKE, WA
- Location: 47.1279° N, 119.2764° W: Placed by OpenAirDocs: center of Moses Lake, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.1279&lon=-119.2764&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report August 22, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 135124
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA79DYP33
- Page: https://openairdocs.org/ntsb/SEA79DYP33

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1646   79/7/6    MOSES LAKE,WA       PIPER PA-25         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 31, 694
        TIME - 0520                    N4603Y              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 170 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          MOSES LAKE,WA               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: MUSH                                              IN FLIGHT: FLAREOUT FOR SWATH RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED DISTANCE,SPEED,AND ALTITUDE
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  200                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - GRAIN FIELDS                              TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - NOT USED
          GOGGLES - NOT 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 -  1200                SWATH RUN-HOW FLOWN - CROSSWIND
        REMARKS- ACFT HEAVILY LOADED.
```

## Aircraft

- Registration: [N4603Y](https://openairdocs.org/deregistered/N4603Y-2013-06-18), registration cancelled 2013-06-18, S/N 25-4297, built 1967 (OpenAirDocs)
- Reported make and model: PIPER PA-25
- Registry model: [Piper PA-25-235](https://openairdocs.org/model/piper-pa-25-235) (registry code 7102504) (OpenAirDocs)
- Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19790706015059A](https://openairdocs.org/incident/19790706015059A), Jul 6, 1979: Piper PA25, Moses Lake, WA, Substantial damage. High speed stall occurred when ag pilot pulled up too fast after passing over wires during spraying operation.

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.