# NTSB MKC72DCQ57: Piper PA-25, N6792Z, Laharpe, KS, May 26, 1972

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 26, 1972
- Place: Laharpe, KS · LAHARPE, KS
- Location: 37.9164° N, 95.3030° W: Placed by OpenAirDocs: center of La Harpe, KS, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.9164&lon=-95.3030&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 14, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 167032
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC72DCQ57
- Page: https://openairdocs.org/ntsb/MKC72DCQ57

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1893  72/5/26    LAHARPE,KANS        PIPER PA-25         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 39, 1540
        TIME - 1830                    N6792Z              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 100 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          IOLA,KANS                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: PROCEDURE TURNAROUND
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: VALVE ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           TERRAIN - ROUGH/UNEVEN
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  450                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - PASTURE                                   TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE-NOT USED
          COCKPIT CRASHPAD - INSTALLED                             CRASH BAR - INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  TERRAIN-TYPE -ROLLING
          ELEVATION-AREA BEING TREATED-FEET -  1040                SWATH RUN-HOW FLOWN - CROSSWIND
          PROCEDURE TURNAROUND - FIRST 1/3 TURN
        REMARKS- GR HIT TERRACE. NR 3 EXHAUST VALVE FAILED.
```

## Aircraft

- Registration: [N6792Z](https://openairdocs.org/aircraft/N6792Z), registered now, S/N 25-2436, built 1963 (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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