# NTSB SEA79FYM57: Aero Comdr S-2R, N4945X, Hermiston, OR, August 16, 1979

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: August 16, 1979
- Place: Hermiston, OR · HERMISTON, OR
- Location: 45.8331° N, 119.2847° W: Placed by OpenAirDocs: center of Hermiston, OR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.8331&lon=-119.2847&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report February 12, 1980
- Report: Brief approved by the director
- NTSB case key (mKey): 134296
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA79FYM57
- Page: https://openairdocs.org/ntsb/SEA79FYM57

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3096  79/8/16  NR.HERMISTON,OR       AERO COMDR S-2R     CR-  0  1  0  COMMERCIAL                ATP,FLIGHT INSTR., AGE
        TIME - 1030                    N4945X              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   33, 9902 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            1500 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         HERMISTON,OR                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: EN ROUTE TO TREAT CROP
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: VALVE ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - WET,SOFT GROUND
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 1500                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - POTATOES                                  TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - USED
          GOGGLES - USED                                           CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - INSTALLED                             CRASH BAR - INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  635                 SWATH RUN-HOW FLOWN - WIND CALM
        REMARKS- NR 7 INTAKE VALVE FAILED.
```

## Aircraft

- Registration: N4945X (not matched to a registry record)
- Reported make and model: AERO COMDR S-2R
- 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 19790816035469A](https://openairdocs.org/incident/19790816035469A), Aug 16, 1979: Ayres S2R, Hermiston, OR, Substantial damage. Engine quit en route spray area. Landed in farm field, flipped over. Found broken intake valve.

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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