# NTSB DEN71FXD55: Cessna 310F, N6721X, Broomfield, CO, March 2, 1971

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: March 2, 1971
- 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: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report December 14, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 161330
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN71FXD55
- Page: https://openairdocs.org/ntsb/DEN71FXD55

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
5-0011   71/3/2    BROOMFIELD,COLO     CESSNA 310F         CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 0930                    N6721X              PX-  0  0  0  DUAL                      AGE 55, 2576 TOTAL HOURS,
                                       DAMAGE-MINOR        OT-  0  0  0                            14 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - JEFFCO
        DEPARTURE POINT             INTENDED DESTINATION
          DENVER,COLO                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 TAXI: TO TAKEOFF
           COLLIDED WITH: FENCE,FENCEPOSTS                          TAXI: TO TAKEOFF
        PROBABLE CAUSE(S)
           DUAL STUDENT - MISJUDGED SPEED
           DUAL STUDENT - FAILED TO MAINTAIN DIRECTIONAL CONTROL
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
        FACTOR(S)
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: OTHER
        REMARKS- TWY HAS DOWNHILL GRADIENT.16K TAILWIND.
```

## Aircraft

- Registration: N6721X (not matched to a registry record)
- Reported make and model: CESSNA 310F
- Category: Airplane
- Engines: reciprocating
- Damage: Minor damage
- Airport: Jeffco

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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