# NTSB DEN68F0176: Cessna 172G, N5949R, Boulder, CO, October 29, 1967

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: October 29, 1967
- 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: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 2 uninjured
- Status: Completed, report January 24, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 112983
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN68F0176
- Page: https://openairdocs.org/ntsb/DEN68F0176

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4240  67/10/29   BOULDER,COLO        CESSNA 172G         CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 0945                    N5949R              PX-  0  0  1  DUAL                      AGE 57, 16542 TOTAL
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            HOURS, 800 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - BOULDER
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: CLIMB TO CRUISE
           COLLIDED WITH: WIRES/POLES                               LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           SYSTEMS - ANTI-ICING,DE-ICING SYSTEMS: CARBURETOR DE-ICING SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - BINDING
           MISCELLANEOUS ACTS,CONDITIONS - ICE-CARBURETOR
           WEATHER - CONDITIONS CONDUCIVE TO CARB./INDUCTION SYSTEM ICING
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      40
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          360                                                       10
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      VFR
        REMARKS- STRUCK POWER LINES. CARB HEAT CONTROL BINDING.LED PLT TO BELIEVE FULL HEAT WHEN PARTIALLY ON.
```

## Aircraft

- Registration: N5949R (not matched to a registry record)
- Reported make and model: CESSNA 172G
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Boulder

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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