# NTSB CHI76DEP13: Stearman A75N1, N55891, Portage, WI, August 11, 1975

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: August 11, 1975
- Place: Portage, WI · PORTAGE, WI
- Location: 43.5490° N, 89.4659° W: Placed by OpenAirDocs: center of Portage, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.5490&lon=-89.4659&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report December 8, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 150517
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI76DEP13
- Page: https://openairdocs.org/ntsb/CHI76DEP13

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3298  75/8/11    PORTAGE,WI          STEARMAN A75N1      CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 37, 605
        TIME - 1610                    N55891              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 198 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          PORTAGE,WI                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: WIRES/POLES                               IN FLIGHT: SURVEY FIELD/AREA
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OBJECTS OR OBSTRUCTIONS
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
           MISCELLANEOUS ACTS,CONDITIONS - PILOT FATIGUE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  250                       KIND OF OPERATION - DUSTING CROPS
          KIND OF CROP - CORN                                      TYPE OF CHEMICAL USED - LIQUID 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 -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  850                 SWATH RUN-HOW FLOWN - WIND CALM
        REMARKS- LOW RUN TO SURVEY THE AREA.20 FLT HRS RECORDED DAY OF ACDT.
```

## Aircraft

- Registration: [N55891](https://openairdocs.org/deregistered/N55891-2012-09-18), registration cancelled 2012-09-18, S/N 75-4316, built 1942 (OpenAirDocs)
- Reported make and model: STEARMAN A75N1
- Registry model: [Boeing A75N1(PT17)](https://openairdocs.org/model/boeing-a75n1-pt17) (registry code 1380134) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

## 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 19750811026019A](https://openairdocs.org/incident/19750811026019A), Aug 11, 1975: Boeing A75N1, Portage, WI, Substantial damage. Low run to survey the area.20 flt hrs recorded day of acdt.

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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