# NTSB DEN81FTK22: Piper PA-18, N4191Z, Stratford, SD, August 16, 1981

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 16, 1981
- Place: Stratford, SD · STRATFORD, SD
- Location: 45.3174° N, 98.3043° W: Placed by OpenAirDocs: center of Stratford, SD, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.3174&lon=-98.3043&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 5, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 123556
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN81FTK22
- Page: https://openairdocs.org/ntsb/DEN81FTK22

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3211  81/8/16    STRATFORD,SD        PIPER PA-18         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 23, 882
        TIME - 1830                    N4191Z              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 194 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          STRATFORD,SD                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: SWATH RUN
           COLLISION WITH GROUND/WATER: CONTROLLED                  LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - IGNITION SYSTEM: SPARK PLUG
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           POWERPLANT - IGNITION SYSTEM: LEADS
           MISCELLANEOUS ACTS,CONDITIONS - GROUNDED
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - LOAD NOT JETTISONED
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  201                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - OTHER                                     TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - BELLY                             TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  1300                SWATH RUN-HOW FLOWN - WIND CALM
        REMARKS- #2 TOP SPARKPLUG PWRD BY L MAG INOP,#2 BOTTOM SPARKPLUG LEAD FM R MAG FD SHORTED.SPRYG PARATHION.
```

## Aircraft

- Registration: [N4191Z](https://openairdocs.org/deregistered/N4191Z-2012-11-07), registration cancelled 2012-11-07, S/N 18-8376, built 1966 (OpenAirDocs)
- Reported make and model: PIPER PA-18
- Registry model: [Piper PA-18-150](https://openairdocs.org/model/piper-pa-18-150) (registry code 7101828) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Luedeke Strip

## 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 19810816050029A](https://openairdocs.org/incident/19810816050029A), Aug 16, 1981: Piper PA18150, Stratford, SD, Substantial damage. Aircraft crashed during forced landing due to engine malfunction.

## Other investigations on N4191Z (2)

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 ANC87LA142](https://openairdocs.org/ntsb/ANC87LA142), Sep 5, 1987: Piper PA-18 (N4191Z), Mcgrath, AK, destroyed, 1 fatal
- [NTSB FTW69D0098](https://openairdocs.org/ntsb/FTW69D0098), Jul 13, 1968: Piper PA-18 (N4191Z), Gulfport, MS, 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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