# NTSB MKC78FCJ21: Aero Comdr 680, N6868S, Ashland, NE, June 23, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 23, 1978
- Place: Ashland, NE · ASHLAND, NE
- Location: 41.0403° N, 96.3713° W: Placed by OpenAirDocs: center of Ashland, NE, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.0403&lon=-96.3713&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 25, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 141375
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC78FCJ21
- Page: https://openairdocs.org/ntsb/MKC78FCJ21

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1693  78/6/23    ASHLAND,NE          AERO COMDR 680      CR-  0  0  1  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 1220                    N6868S              PX-  0  0  0  COMMUTER AIR CARRIER      38, 4100 TOTAL HOURS, 65
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0  AIR TAXI-CARGO S-D        IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          OMAHA,NE                    GRAND ISLAND,NE
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           WHEELS-UP                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: CRANKSHAFT
           MISCELLANEOUS ACTS,CONDITIONS - INTENTIONAL WHEELS-UP
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- A PIN WHICH SECURES A CRANKSHAFT COUNTERWEIGHT BACKED OUT RESULTING IN EXTENSIVE ENGINE DAMAGE.
```

## Aircraft

- Registration: [N6868S](https://openairdocs.org/deregistered/N6868S-2013-11-12), registration cancelled 2013-11-12, S/N 680-387-68, built 1956 (OpenAirDocs)
- Reported make and model: AERO COMDR 680
- Registry model: [Aero Commander 680](https://openairdocs.org/model/aero-commander-680) (registry code 0141602) (OpenAirDocs)
- Registry engine: [Lycoming GSO&IGSO-480 series](https://openairdocs.org/engine/lycoming-gso-igso-480-series) (registry code 41529, reciprocating) (OpenAirDocs)
- Category: Airplane
- 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 19780623014939A](https://openairdocs.org/incident/19780623014939A), Jun 23, 1978: Rkwell 680FLP, Ashland, NE, Substantial damage. A pin which secures a crankshaft counterweight backed out resultin extensive engine 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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