# NTSB MKC66A0013: Bell 47G3B1, N73247, Altura, MN, August 26, 1965

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 26, 1965
- Place: Altura, MN · ALTURA, MN
- Location: 44.0642° N, 91.9436° W: Placed by OpenAirDocs: center of Altura, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.0642&lon=-91.9436&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 14, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 176381
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC66A0013
- Page: https://openairdocs.org/ntsb/MKC66A0013

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0707  65/8/26    ALTURA MINN         BELL 47G3B1         CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1210                    N73247              PX-  0  0  0  AERIAL APPLICATION        AGE 30, 3000 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            2000 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: MUSH                                              IN FLIGHT: FLAREOUT FOR SWATH RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
          PILOT-POWER SETTLING DURING DOWNWIND TURN.
        FACTOR(S)
           WEATHER - HIGH DENSITY ALTITUDE
           TERRAIN - HIGH VEGETATION
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                 UNKNOWN/NOT REPORTED
        VISIBILITY AT ACCIDENT SITE                              OBSTRUCTIONS TO VISION AT ACCIDENT SITE
          4 MILES OR LESS                                          UNKNOWN/NOT REPORTED
        TEMPERATURE-F                                            WIND DIRECTION-DEGREES
           80                                                      180
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
           6                                                       VFR
        TYPE OF FLIGHT PLAN
          NONE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  300                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - CORN                                      TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - NOT USED
          GOGGLES - NOT USED                                       COCKPIT CRASHPAD - NOT INSTALLED
          CRASH BAR - NOT INSTALLED                                TANK/HOPPER-LOCATION - SIDES
          TERRAIN-TYPE -LEVEL,FLAT                                 ELEVATION-AREA BEING TREATED-FEET -  900
          SWATH RUN-HOW FLOWN - DOWNWIND                           PROCEDURE TURNAROUND - THIRD 1/3 TURN
```

## Aircraft

- Registration: [N73247](https://openairdocs.org/deregistered/N73247-1970-07-27), registration cancelled 1970-07-27, S/N 2799 (OpenAirDocs)
- Reported make and model: BELL 47G3B1
- Registry model: [Bell 47G-3B-1](https://openairdocs.org/model/bell-47g-3b-1) (registry code 1181028) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N73247 (1)

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 NYC69F0178](https://openairdocs.org/ntsb/NYC69F0178), Aug 5, 1968: Bell 47G3B1 (N73247), Sipesville, PA, destroyed, 1 fatal

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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