# NTSB DEN70F0078: Mooney M20A, N6553B, Broomfield, CO, August 1, 1969

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 1, 1969
- Place: Broomfield, CO · BROOMFIELD, CO
- Location: 39.9205° N, 105.0867° W: Placed by OpenAirDocs: center of Broomfield, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.9205&lon=-105.0867&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 24, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 163884
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN70F0078
- Page: https://openairdocs.org/ntsb/DEN70F0078

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4705   69/8/1    BROOMFIELD,COLO     MOONEY M20A         CR-  0  0  1  INSTRUCTIONAL             STUDENT, AGE 29, 49 TOTAL
        TIME - 1730                    N6553B              PX-  0  0  0  TRAINING                  HOURS, 41 IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - JEFFERSON COUNTY
        DEPARTURE POINT             INTENDED DESTINATION
          BROOMFIELD,COLO             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: PROPELLER                       TAKEOFF: RUN
           FIRE OR EXPLOSION: ON GROUND                             TAKEOFF: ABORTED
        PROBABLE CAUSE(S)
           POWERPLANT - PROPELLER AND ACCESSORIES: BLADES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - VIBRATION,EXCESSIVE
           MISCELLANEOUS ACTS,CONDITIONS - FIRE IN ENGINE
        REMARKS- PROP BLADE FAILED FOR UNDETERMINED REASON. VIBRATION CAUSED ENG,AIRFRAME DAMAGE,STARTED FIRE.
```

## Aircraft

- Registration: [N6553B](https://openairdocs.org/deregistered/N6553B-1971-04-14), registration cancelled 1971-04-14, S/N 1223 (OpenAirDocs)
- Reported make and model: MOONEY M20A
- Registry model: [Mooney M20A](https://openairdocs.org/model/mooney-m20a) (registry code 5870204) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Jefferson County

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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