# NTSB MKC79FTK14: Aero Comdr S2R, N39766, Vivian, SD, May 22, 1979

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: May 22, 1979
- Place: Vivian, SD · VIVIAN, SD
- Location: 43.9273° N, 100.3011° W: Placed by OpenAirDocs: center of Vivian, SD, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.9273&lon=-100.3011&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report June 27, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 136022
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC79FTK14
- Page: https://openairdocs.org/ntsb/MKC79FTK14

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0873  79/5/22    VIVIAN,SD           AERO COMDR S2R      CR-  0  1  0  COMMERCIAL                COMMERCIAL, AGE 43, 10000
        TIME - 0820                    N39766              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 700 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          PIERRE,SD                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: MUSH                                              IN FLIGHT: PROCEDURE TURNAROUND
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - LOAD NOT JETTISONED
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  700                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - GRAIN FIELDS                              TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE-NOT USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  TERRAIN-TYPE -ROLLING
          ELEVATION-AREA BEING TREATED-FEET -  1800                SWATH RUN-HOW FLOWN - DOWNWIND
          PROCEDURE TURNAROUND - SECOND 1/3 TURN
```

## Aircraft

- Registration: [N39766](https://openairdocs.org/deregistered/N39766-1981-09-30), registration cancelled 1981-09-30, S/N 1423R, built 1973 (OpenAirDocs)
- Reported make and model: AERO COMDR S2R
- Registry model: [Aero Commander S2R](https://openairdocs.org/model/aero-commander-s2r) (registry code 0143022) (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 19790522009999A](https://openairdocs.org/incident/19790522009999A), May 22, 1979: Ayres S2R, Vivian, SD, Substantial damage. Ag pilot misjudged rising terrain and flew into the ground.

## Other investigations on N39766 (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 LAX78DUJ36](https://openairdocs.org/ntsb/LAX78DUJ36), Mar 7, 1978: Aero Comdr S-2R (N39766), Mesa, AZ, 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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