# NTSB SEA71FDG01: Piper PA-25, N6441Z, Gallatin Gwy, MT, July 3, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 3, 1970
- Place: Gallatin Gwy, MT · GALLATIN GWY, MT
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report April 28, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 121031
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA71FDG01
- Page: https://openairdocs.org/ntsb/SEA71FDG01

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2877   70/7/3    GALLATIN GWY,MONT   PIPER PA-25         CR-  0  0  1  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 1455                    N6441Z              PX-  0  0  0  AERIAL APPLICATION        32, 6000 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            1000 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          GALLATIN GWY,MONT           LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: MUSH                                              IN FLIGHT: PROCEDURE TURNAROUND
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        FACTOR(S)
           WEATHER - HIGH DENSITY ALTITUDE
           MISCELLANEOUS ACTS,CONDITIONS - JETTISONED LOAD
        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                  TEMPERATURE-F
          NONE                                                      87
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - UNKNOWN/NOT REPORTED       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - OTHER                                     TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - INSTALLED                             TANK/HOPPER-LOCATION - UNKNOWN/NOT REPORTED
          TERRAIN-TYPE -HILLY                                      ELEVATION-AREA BEING TREATED-FEET -  5000
                        ROLLING
          SWATH RUN-HOW FLOWN - WIND CALM
        REMARKS- SETTLED INTO HILLSIDE. DENSITY ALT ABOUT 7900 FT.SPRAYING ALFALFA.
```

## Aircraft

- Registration: [N6441Z](https://openairdocs.org/deregistered/N6441Z-1973-10-01), registration cancelled 1973-10-01, S/N 25-600 (OpenAirDocs)
- Reported make and model: PIPER PA-25
- Registry model: [Piper PA-25](https://openairdocs.org/model/piper-pa-25) (registry code 7102502) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N6441Z (2)

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 SEA73FTI23](https://openairdocs.org/ntsb/SEA73FTI23), Jun 27, 1973: Piper PA-25 (N6441Z), Belgrade, MT, destroyed
- [NTSB FTW66F0217](https://openairdocs.org/ntsb/FTW66F0217), Aug 2, 1965: Piper PA-25 (N6441Z), Panhandle, TX, 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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