# NTSB MKC74FCD40: Piper PA-25, N7473Z, Unionville, IA, June 18, 1974

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: June 18, 1974
- Place: Unionville, IA · UNIONVILLE, IA
- Location: 40.8181° N, 92.6958° W: Placed by OpenAirDocs: center of Unionville, IA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.8181&lon=-92.6958&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report July 5, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 126435
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC74FCD40
- Page: https://openairdocs.org/ntsb/MKC74FCD40

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1338  74/6/18    UNIONVILLE,IOWA     PIPER PA-25         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 33, 2965
        TIME - 1400                    N7473Z              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 450 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          BLAKESBURG,IOWA             UNIONVILLE,IOWA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: MUSH                                              IN FLIGHT: PULLUP FROM SWATH RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
           PILOT IN COMMAND - MISJUDGED DISTANCE,SPEED,ALTITUDE OR CLEARANCE
        FACTOR(S)
           WEATHER - HIGH TEMPERATURE
        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                                                      80
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  450                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - CORN                                      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 - INSTALLED                             CRASH BAR - INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  TERRAIN-TYPE -ROLLING
          ELEVATION-AREA BEING TREATED-FEET -  640                 SWATH RUN-HOW FLOWN - UPWIND
          PROCEDURE TURNAROUND - ENTRY TO PROCEDURE TURN
        REMARKS- STRUCK HILL APRX 15FT BLO TOP DRG PULL-UP.
```

## Aircraft

- Registration: [N7473Z](https://openairdocs.org/deregistered/N7473Z-2017-02-04), registration cancelled 2017-02-04, S/N 25-3478, built 1965 (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 19740618015339A](https://openairdocs.org/incident/19740618015339A), Jun 18, 1974: Piper PA25235, Unionville, IA, Substantial damage. Struck hill aprx 15FT blo top drg pull-up.

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.