# NTSB UNK64X2770: Mooney MK18, N4160, Medicine Lodge Ka, KS, July 11, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 11, 1964
- Place: Medicine Lodge Ka, KS · MEDICINE LODGE KA, KS
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 28, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 184730
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X2770
- Page: https://openairdocs.org/ntsb/UNK64X2770

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2035  64/7/11    MEDICINE LODGE KA   MOONEY MK18         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,
        TIME - 1030                    N4160               PX-  0  0  0  BUSINESS                  AGE 43, UNK/NR TOTAL
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            HOURS, 45 IN TYPE,
                                                                                                   INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           AIRFRAME - FLIGHT CONTROL SURFACES: VERTICAL STABILIZER,ATTACHMENTS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - BOGUS PART
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE INSPECTION OF AIRCRAFT (MAINTENANCE PERSONNEL)
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
                                  *ERROR-INVALID CODE*
                                  DIRECTIONAL CONTROL PROBLEM
        REMARKS- DIAMETER OF WASHER UNDER STABILIZER SPAR ATTACHING BOLT TOO SMALL.
```

## Aircraft

- Registration: [N4160](https://openairdocs.org/aircraft/N4160), registered now, S/N 326, built 1955 (OpenAirDocs)
- Reported make and model: MOONEY MK18
- Registry model: [Mooney M-18C 55](https://openairdocs.org/model/mooney-m-18c-55) (registry code 5870104) (OpenAirDocs)
- Registry engine: [Continental C85 series](https://openairdocs.org/engine/continental-c85-series) (registry code 17008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: 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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