# NTSB FTW75DPG23: Piper PA-25, N7021Z, Cornerstone, AR, October 8, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 8, 1974
- Place: Cornerstone, AR · CORNERSTONE, AR
- Location: 34.2304° N, 91.7451° W: Placed by OpenAirDocs: center of Cornerstone, AR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=34.2304&lon=-91.7451&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 21, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 141175
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW75DPG23
- Page: https://openairdocs.org/ntsb/FTW75DPG23

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2801   74/10/8   CORNERSTONE,ARK     PIPER PA-25         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 31, 3000
        TIME - 1630                    N7021Z              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, ALL IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          CORNERSTONE,ARK             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: ELECTRONIC TOWERS                         IN FLIGHT: PULLUP FROM SWATH RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OBJECTS OR OBSTRUCTIONS
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 2450                       KIND OF OPERATION - DEFOLIATION (LIQUID)
          KIND OF CROP - COTTON                                    TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - NOT USED
          GOGGLES - NOT 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 -  200                 SWATH RUN-HOW FLOWN - CROSSWIND
        REMARKS- HIT TOP OF RADIO ANTENNA.
```

## Aircraft

- Registration: [N7021Z](https://openairdocs.org/deregistered/N7021Z-1977-12-01), registration cancelled 1977-12-01, S/N 25-2776 (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)
- 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 19741008031599A](https://openairdocs.org/incident/19741008031599A), Oct 8, 1974: Piper PA25235, Cornerstone, AR, Substantial damage. Hit top of radio antenna.

## Other investigations on N7021Z (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 FTW77FQG54](https://openairdocs.org/ntsb/FTW77FQG54), Sep 19, 1977: Piper PA-25 (N7021Z), Garden City, TX, destroyed

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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