# NTSB UNK64X1714: Navion NAV4, N5153K, Indianapolis, IN, May 10, 1964

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: May 10, 1964
- 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: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 2 minor
- Status: Completed, report August 26, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 185055
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X1714
- Page: https://openairdocs.org/ntsb/UNK64X1714

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0390  64/5/10    INDIANAPOLIS IND    NAVION NAV4         CR-  0  1  0  NONCOMMERCIAL             PRIVATE, AGE 41, 220
        TIME - 0730                    N5153K              PX-  0  0  2  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 155 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - SHANKS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE                                  LANDING: TRAFFIC PATTERN-CIRCLING
           COLLIDED WITH: WIRES/POLES                               LANDING: OTHER
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (OWNER PERSONNEL)
          PWR PLT-PROPELLER REDUCTION SYSTEM FAILURE.
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - DISCONNECTED
           MISCELLANEOUS ACTS,CONDITIONS - SHEARED
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- PROPELLER DISENGAGED FROM ENGINE
```

## Aircraft

- Registration: [N5153K](https://openairdocs.org/deregistered/N5153K-1971-12-03), registration cancelled 1971-12-03, S/N NAV-4-2053B (OpenAirDocs)
- Reported make and model: NAVION NAV4
- Registry model: [Navion NAVION B](https://openairdocs.org/model/navion-navion-b) (registry code 6150112) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Shanks

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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