# NTSB DEN73FTE62: Champion 7KCAB, N11FS, Boulder, CO, March 4, 1973

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 4, 1973
- Place: Boulder, CO · BOULDER, CO
- Location: 40.0244° N, 105.2513° W: Placed by OpenAirDocs: center of Boulder, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.0244&lon=-105.2513&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report May 9, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 170372
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN73FTE62
- Page: https://openairdocs.org/ntsb/DEN73FTE62

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0660   73/3/4    BOULDER,COLO        CHAMPION 7KCAB      CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 20, 104
        TIME - 1500                    N11FS               PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 3 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - BOULDER MUNI
        DEPARTURE POINT             INTENDED DESTINATION
          BOULDER,COLO                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN DIRECTIONAL CONTROL
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: SOFT SHOULDERS
        FACTOR(S)
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
        REMARKS- ACFT VEERED OFF RWY INTO SOFT DIRT.
```

## Aircraft

- Registration: [N11FS](https://openairdocs.org/deregistered/N11FS-2015-05-11), registration cancelled 2015-05-11, S/N 17-72, built 1972 (OpenAirDocs)
- Reported make and model: CHAMPION 7KCAB
- Registry model: [Bellanca 8KCAB](https://openairdocs.org/model/bellanca-8kcab) (registry code 1220801) (OpenAirDocs)
- Registry engine: [Lycoming IO-320 series](https://openairdocs.org/engine/lycoming-io-320-series) (registry code 41509, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Boulder 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 19730304006159A](https://openairdocs.org/incident/19730304006159A), Mar 4, 1973: Blanca 7KCAB, Boulder, CO, Substantial damage. Acft veered off rwy into soft dirt.

## Other investigations on N11FS (2)

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.

- [NTSB ERA14LA178](https://openairdocs.org/ntsb/ERA14LA178), Mar 30, 2014: Bellanca 8KCAB (N11FS), Bay St Louis, MS, substantial damage. Probable cause: A sudden fuel leak, which resulted in a postlanding fire; the origin of the leak could not be determined due to fire damage.
- [NTSB MKC76DCG94](https://openairdocs.org/ntsb/MKC76DCG94), Aug 6, 1976: Bellanca 8KCAB (N11FS), Excelsior Spgs, MO, substantial 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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