# NTSB CHI66F0169: Aero Cmdr 520, N111, Hamilton, OH, August 4, 1965

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 4, 1965
- Place: Hamilton, OH · HAMILTON, OH
- Location: 39.3943° N, 84.5655° W: Placed by OpenAirDocs: center of Hamilton, OH, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.3943&lon=-84.5655&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 20, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 176522
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI66F0169
- Page: https://openairdocs.org/ntsb/CHI66F0169

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2233   65/8/4    HAMILTON OHIO       AERO CMDR 520       CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 0130                    N111                PX-  0  0  0  AIR TAXI-CARGO            AGE 44, 12000 TOTAL
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            HOURS, 1200 IN TYPE,
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - HAMILTON AIRPORT
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           COLLIDED WITH: CROP                                      LANDING: ROLL
        PROBABLE CAUSE(S)
          PWR PLT-LEFT ENGINE COUNTERWEIGHT ATTACHMENT FAILD
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
        REMARKS- PILOT UNABLE MAINTAIN BRAKE PRESURE BY HAND PUMP
```

## Aircraft

- Registration: N111 (not matched to a registry record)
- Reported make and model: AERO CMDR 520
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Hamilton Airport

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.