# NTSB FTW75DRG69: Piper PA-25, N4967Y, Knippa, TX, April 18, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 18, 1975
- Place: Knippa, TX · KNIPPA, TX
- Location: 29.3038° N, 99.6308° W: Placed by OpenAirDocs: center of Knippa, TX, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=29.3038&lon=-99.6308&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report May 21, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 148611
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW75DRG69
- Page: https://openairdocs.org/ntsb/FTW75DRG69

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0851  75/4/18    KNIPPA,TX           PIPER PA-25         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 37, 7000
        TIME - 1500                    N4967Y              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 4500 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, INSTRUMENT RATED.
        NAME OF AIRPORT - AG STRIP
        DEPARTURE POINT             INTENDED DESTINATION
          KNIPPA,TX                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: FENCE,FENCEPOSTS                          TAKEOFF: RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO ABORT TAKEOFF
        FACTOR(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY LOADED AIRCRAFT-WEIGHT-AND/OR C.G.
           MISCELLANEOUS ACTS,CONDITIONS - LOAD NOT JETTISONED
           WEATHER - UNFAVORABLE WIND CONDITIONS
           MISCELLANEOUS ACTS,CONDITIONS - RAN OFF END OF RUNWAY
        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                  RELATIVE BEARING OF WIND
          NONE                                                     LEFT CROSS WIND 248-292 DEGREES
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          330                                                       10
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 5500                       KIND OF OPERATION - FERTILIZING (LIQUID)
          KIND OF CROP - CORN                                      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
         FIRE AFTER IMPACT
        REMARKS- ACFT TOO HEAVY FOR ZERO WIND COMPONENT.ATTMPTD JETTISON,BUT DIDNT USE OVERRIDE BUTTON.GUSTING 15K.
```

## Aircraft

- Registration: [N4967Y](https://openairdocs.org/deregistered/N4967Y-1975-05-29), registration cancelled 1975-05-29, S/N 25-4768 (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: Destroyed
- Airport: Ag Strip

## 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 19750418008839A](https://openairdocs.org/incident/19750418008839A), Apr 18, 1975: Piper PA25235, Knippa, TX, Destroyed. Acft too heavy for zero wind component. Attmptd jettison,but didnt use override button. Gusting 15K.

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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