# NTSB DEN73FTC29: Snow S2C, N1641S, Sheridan, WY, June 14, 1973

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: June 14, 1973
- Place: Sheridan, WY · SHERIDAN, WY
- Location: 44.7962° N, 106.9642° W: Placed by OpenAirDocs: center of Sheridan, WY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.7962&lon=-106.9642&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report September 5, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 190141
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN73FTC29
- Page: https://openairdocs.org/ntsb/DEN73FTC29

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1837  73/6/14    SHERIDAN,WYO        SNOW S2C            CR-  0  1  0  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 1030                    N1641S              PX-  0  0  0  AERIAL APPLICATION        34, UNK/NR TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            UNK/NR IN TYPE,
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          SHERIDAN,WYO                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL                                                    IN FLIGHT: PROCEDURE TURNAROUND
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        FACTOR(S)
           WEATHER - HIGH DENSITY ALTITUDE
           TERRAIN - HIGH OBSTRUCTIONS
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      79
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          280                                                       7
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 1550                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - OTHER                                     TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          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 -  4000                SWATH RUN-HOW FLOWN - UNKNOWN/NOT REPORTED
          PROCEDURE TURNAROUND - THIRD 1/3 TURN
        REMARKS- PLT OBSRVD EXCDNG 60 DEG BK LO ALT. SPRYNG ALFALFA.
```

## Aircraft

- Registration: [N1641S](https://openairdocs.org/deregistered/N1641S-2004-03-09), registration cancelled 2004-03-09, S/N 600-1191C, built 1963 (OpenAirDocs)
- Reported make and model: SNOW S2C
- Registry model: [Snow 600-S2C](https://openairdocs.org/model/snow-600-s2c) (registry code 8380302) (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: Destroyed

## 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 19730614016629A](https://openairdocs.org/incident/19730614016629A), Jun 14, 1973: Ayres 600S2D, Sheridan, WY, Destroyed. Plt obsrvd excdng 60 deg bk lo alt. Spryng alfalfa.

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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