# NTSB MKC71FDD13: Piper PA-25, N7767Z, Humboldt, MN, September 18, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 18, 1970
- Place: Humboldt, MN · HUMBOLDT, MN
- Location: 48.9215° N, 97.0946° W: Placed by OpenAirDocs: center of Humboldt, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=48.9215&lon=-97.0946&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 29, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 143053
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC71FDD13
- Page: https://openairdocs.org/ntsb/MKC71FDD13

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3745  70/9/18    HUMBOLDT,MINN       PIPER PA-25         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 24, 1100
        TIME - 1700                    N7767Z              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 600 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - BOCKWITZ
        DEPARTURE POINT             INTENDED DESTINATION
          HUMBOLDT,MINN               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 OPERATION OF BRAKES AND/OR FLIGHT CONTROLS
        FACTOR(S)
           WEATHER - UNFAVORABLE WIND CONDITIONS
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        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                  RELATIVE BEARING OF WIND
          NONE                                                     RIGHT CROSS WIND 068-112 DEGREES
        TEMPERATURE-F                                            WIND DIRECTION-DEGREES
           75                                                      225
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
           6                                                       VFR
        TYPE OF FLIGHT PLAN
          NONE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  800                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - OTHER                                     TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT
        REMARKS- R X-WIND GUSTING TO 12K. SPRAYING UNSEEDED FLD.
```

## Aircraft

- Registration: [N7767Z](https://openairdocs.org/deregistered/N7767Z-2015-12-23), registration cancelled 2015-12-23, S/N 25-3960, 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
- Airport: Bockwitz

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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