# NTSB CHI81DEP22: Bell 47G-5, N1315X, Coloma, WI, June 12, 1981

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 12, 1981
- Place: Coloma, WI · COLOMA, WI
- Location: 44.0387° N, 89.5311° W: Placed by OpenAirDocs: center of Coloma, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.0387&lon=-89.5311&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 13, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 125611
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI81DEP22
- Page: https://openairdocs.org/ntsb/CHI81DEP22

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1340  81/6/12    COLOMA,WI           BELL 47G-5          CR-  0  0  1  COMMERCIAL                ATP,FLIGHT INSTR., AGE
        TIME - 1800                    N1315X              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   43, 4562 TOTAL HOURS, 405
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          COLOMA,WI                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      IN FLIGHT: OTHER
           HARD LANDING                                             LANDING: POWER-ON LANDING
        PROBABLE CAUSE(S)
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: STABILIZING SURFACES-DAMPERS
           MISCELLANEOUS ACTS,CONDITIONS - CORRODED/CORROSION
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
                                  PROP/ENGINE VIBRATION
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - UNKNOWN/NOT REPORTED       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - LETTUCE                                   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 - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - SIDES                             TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  1200
        REMARKS- STABILIZER BAR ASSY,PN 140-248-3,FAILED WHILE MOVING HEL TO LOADING AREA AT APRX 10FT AGL.
```

## Aircraft

- Registration: [N1315X](https://openairdocs.org/aircraft/N1315X), registered now, S/N 7816, built 1966 (OpenAirDocs)
- Reported make and model: BELL 47G-5
- Registry model: [Bell 47G-5](https://openairdocs.org/model/bell-47g-5) (registry code 1181032) (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: Substantial damage

## 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 19810612043389A](https://openairdocs.org/incident/19810612043389A), Jun 12, 1981: Bell 47G5, Coloma, WI, Substantial damage. Developed vibration, main rotor cut off tail boom on landing. Found stabilizer bar had failed due to fatigue.

## Other investigations on N1315X (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 CHI67A0008](https://openairdocs.org/ntsb/CHI67A0008), Jul 21, 1966: Bell 47G-5 (N1315X), Plymouth, MI, 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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