# NTSB DEN71DXA20: Piper PA-25, N7685Z, Casper, WY, April 2, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 2, 1971
- Place: Casper, WY · CASPER, WY
- Location: 42.8421° N, 106.3213° W: Placed by OpenAirDocs: center of Casper, WY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.8421&lon=-106.3213&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 2, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 160790
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN71DXA20
- Page: https://openairdocs.org/ntsb/DEN71DXA20

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1955   71/4/2    CASPER,WYO          PIPER PA-25         CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1400                    N7685Z              PX-  0  0  0  AERIAL APPLICATION        AGE 26, 3789 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            5 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          CASPER,WYO                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: LEVEL OFF/TOUCHDOWN
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER COMPENSATION FOR WIND CONDITIONS
        FACTOR(S)
           WEATHER - DOWNDRAFT,UPDRAFTS
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        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                  WIND DIRECTION-DEGREES
          NONE                                                     200
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
           12                                                      VFR
        TYPE OF FLIGHT PLAN
          NONE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -   10                       KIND OF OPERATION - FERTILIZING (DUST)
          KIND OF CROP - PASTURE                                   TYPE OF CHEMICAL USED - DRY 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 -HILLY
          ELEVATION-AREA BEING TREATED-FEET -  5500                SWATH RUN-HOW FLOWN - CROSSWIND
          PROCEDURE TURNAROUND - THIRD 1/3 TURN
        REMARKS- ENCTRD DWNDFT UN CHECK DSCNT,LNDD.T/D LDG ATTITUDE DRFTG SIDEWAYS.FLT HRS THIS ACFT 5,AG HRS 10.
```

## Aircraft

- Registration: [N7685Z](https://openairdocs.org/aircraft/N7685Z), registered now, S/N 25-3838, built 1966 (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

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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