# NTSB UNK64X1983: Bell 47G, N4734S, Pana, IL, May 27, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 27, 1964
- Place: Pana, IL · PANA, IL
- Location: 39.3946° N, 89.0908° W: Placed by OpenAirDocs: center of Pana, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.3946&lon=-89.0908&mi=10
- Phase of flight: [Emergency descent](https://openairdocs.org/ntsb-phases/600) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report January 8, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 185001
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X1983
- Page: https://openairdocs.org/ntsb/UNK64X1983

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0105  64/5/27    PANA ILL            BELL 47G            CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 39, 9100
        TIME - 1800                    N4734S              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 4000 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: EMERGENCY DESCENT
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - IGNITION SYSTEM: SPARK PLUG
           MISCELLANEOUS ACTS,CONDITIONS - CARBON DEPOSITS
           POWERPLANT - EXHAUST SYSTEM: MANIFOLDS
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (OWNER PERSONNEL)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE INSPECTION OF AIRCRAFT (OWNER-PILOT)
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 6200                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - GRAIN FIELDS                              TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE-NOT USED
          COCKPIT CRASHPAD - NOT INSTALLED                         TANK/HOPPER-LOCATION - SIDES
          TERRAIN-TYPE -ROLLING                                    ELEVATION-AREA BEING TREATED-FEET -  800
```

## Aircraft

- Registration: [N4734S](https://openairdocs.org/deregistered/N4734S-2012-12-11), registration cancelled 2012-12-11, S/N SA3, built 1963 (OpenAirDocs)
- Reported make and model: BELL 47G
- Registry model: [Bell 47G](https://openairdocs.org/model/bell-47g) (registry code 1181002) (OpenAirDocs)
- Registry engine: [Franklin 6V4 series](https://openairdocs.org/engine/franklin-6v4-series) (registry code 27033, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N4734S (4)

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 CHI79FEM34](https://openairdocs.org/ntsb/CHI79FEM34), Aug 16, 1979: Bell 47G-2 (N4734S), Hart, MI, substantial damage
- [NTSB CHI74DEM57](https://openairdocs.org/ntsb/CHI74DEM57), May 1, 1974: Bell 47G (N4734S), Hart, MI, substantial damage
- [NTSB MKC67A0034](https://openairdocs.org/ntsb/MKC67A0034), Nov 7, 1966: Bell 47G (N4734S), Hariton, IA, substantial damage
- [NTSB UNK64X2452](https://openairdocs.org/ntsb/UNK64X2452), Jun 23, 1964: Bell 47G (N4734S), Vivian, LA, 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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