# NTSB CHI66A0054: Bell 47G-4, N8507F, Indianapolis, IN, November 29, 1965

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: November 29, 1965
- Place: Indianapolis, IN · INDIANAPOLIS, IN
- Location: 39.7684° N, 86.1580° W: Placed by OpenAirDocs: center of Indianapolis, IN, within about 11 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.7684&lon=-86.1580&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 4, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 174899
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI66A0054
- Page: https://openairdocs.org/ntsb/CHI66A0054

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0870  65/11/29   INDIANAPOLIS IND    BELL 47G-4          CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,
        TIME - 1450                    N8507F              PX-  0  0  0  PRACTICE                  AGE 37, 4870 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            100 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - WIER-COOK MUNICPL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: POWER-ON LANDING
        PROBABLE CAUSE(S)
          SYSTEMS-CONTROL SYSTEM MALFUNCTION-CAUSE UNDTERMND
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: CYCLIC PITCH CONTROL SYSTEM
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: COLLECTIVE PITCH CONTROL SYSTEM
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  PITCH CONTROL PROBLEM
                                  DIRECTIONAL CONTROL PROBLEM
```

## Aircraft

- Registration: [N8507F](https://openairdocs.org/deregistered/N8507F-1982-05-26), registration cancelled 1982-05-26, S/N 3364 (OpenAirDocs)
- Reported make and model: BELL 47G-4
- Registry model: [Bell 47G-4](https://openairdocs.org/model/bell-47g-4) (registry code 1181030) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Wier-Cook Municpl

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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