# NTSB DEN75FTE18: Aero Comdr 680E, N6888S, Longmont, CO, August 7, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 7, 1974
- Place: Longmont, CO · LONGMONT, CO
- Location: 40.1682° N, 105.1005° W: Placed by OpenAirDocs: center of Longmont, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.1682&lon=-105.1005&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 13, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 138679
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN75FTE18
- Page: https://openairdocs.org/ntsb/DEN75FTE18

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3534   74/8/7    LONGMONT,COLO       AERO COMDR 680E     CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,
        TIME - 0800                    N6888S              PX-  0  0  0  BUSINESS                  AGE 50, 17000 TOTAL
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            HOURS, UNK/NR IN TYPE,
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - LONGMONT MUNI
        DEPARTURE POINT             INTENDED DESTINATION
          LONGMONT,COLO               RAWLINS,WYO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: CLIMB TO CRUISE
           FIRE OR EXPLOSION: IN FLIGHT                             IN FLIGHT: CLIMB TO CRUISE
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - FIRE IN ENGINE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
        REMARKS- LT ENG COUNTERWEIGHT LOBE AFT OF NR 3 CON ROD FAILED THRU MOUNTING BUSHING HOLES.RET & LNDD OK.
```

## Aircraft

- Registration: [N6888S](https://openairdocs.org/deregistered/N6888S-2013-05-02), registration cancelled 2013-05-02, S/N 680E-413-88, built 1956 (OpenAirDocs)
- Reported make and model: AERO COMDR 680E
- Registry model: [Aero Commander 680-E](https://openairdocs.org/model/aero-commander-680-e) (registry code 0141604) (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
- Airport: Longmont Muni

## 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 19740807030119A](https://openairdocs.org/incident/19740807030119A), Aug 7, 1974: Rkwell 680E, Longmont, CO, Substantial damage. Lt eng counterweight lobe aft of nr 3 con rod failed thru mounting bushing holes. Ret & lndd ok.

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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