# NTSB MKC67A0078: Bell 47G-2, N2813B, West Plains, MO, June 10, 1967

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: June 10, 1967
- Place: West Plains, MO · WEST PLAINS, MO
- Location: 36.7374° N, 91.8680° W: Placed by OpenAirDocs: center of West Plains, MO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.7374&lon=-91.8680&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report February 12, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 116953
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC67A0078
- Page: https://openairdocs.org/ntsb/MKC67A0078

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0952  67/6/10  NR.WEST PLAINS,MO     BELL 47G-2          CR-  0  1  0  COMMERCIAL                COMMERCIAL, AGE 29, 1675
        TIME - 0545                    N2813B              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 1100 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      IN FLIGHT: STARTING SWATH RUN
           COLLIDED WITH: TREES                                     IN FLIGHT: STARTING SWATH RUN
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: CLUTCH ASSEMBLY
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 1675                       KIND OF OPERATION - DEFOLIATION (DUST)
          KIND OF CROP - FOREST-TREES                              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 - NOT INSTALLED                         TANK/HOPPER-LOCATION - SIDES
          TERRAIN-TYPE -ROLLING                                    ELEVATION-AREA BEING TREATED-FEET -  1060
          SWATH RUN-HOW FLOWN - WIND CALM
        REMARKS- FAILURE OF ROTOR BLADE ROTATION,RPM,DUE TO EXTREME SLIPPAGE-CLUTCH SHOES/DRUM.103HRS SINCE ANNUAL.
```

## Aircraft

- Registration: [N2813B](https://openairdocs.org/deregistered/N2813B-2015-05-15), registration cancelled 2015-05-15, S/N 1486 (OpenAirDocs)
- Reported make and model: BELL 47G-2
- Registry model: [Bell 47G-2](https://openairdocs.org/model/bell-47g-2) (registry code 1181008) (OpenAirDocs)
- Registry engine: [Lycoming VO-435 series](https://openairdocs.org/engine/lycoming-vo-435-series) (registry code 41525, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed

## Other investigations on N2813B (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 MKC69F0086](https://openairdocs.org/ntsb/MKC69F0086), Aug 1, 1968: Bell 47G-2 (N2813B), Interior, SD, substantial damage
- [NTSB MKC65A0072](https://openairdocs.org/ntsb/MKC65A0072), Jun 10, 1965: Bell 47G2 (N2813B), Brooklyn Prk, MN, 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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