# NTSB DEN69A0004: Bell 47G3B2, N4074G, Aspen, CO, July 29, 1968

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: July 29, 1968
- Place: Aspen, CO · ASPEN, CO
- Location: 39.1952° N, 106.8368° W: Placed by OpenAirDocs: center of Aspen, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.1952&lon=-106.8368&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 2 uninjured
- Status: Completed, report December 9, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 108526
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN69A0004
- Page: https://openairdocs.org/ntsb/DEN69A0004

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3436  68/7/29  NR.ASPEN,COLO         BELL 47G3B2         CR-  0  1  0  COMMERCIAL                COMMERCIAL, AGE 42, 5408
        TIME - 1540                    N4074G              PX-  0  0  2  AIR TAXI-PASSG            TOTAL HOURS, 1964 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - MIDWAY CREEK CAMP
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: POWER-ON DESCENT
           COLLIDED WITH: TREES                                     LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: POWERPLANT FAILURE FOR UNDETERMINED REASONS
        FACTOR(S)
           WEATHER - HIGH DENSITY ALTITUDE
           TERRAIN - HIGH OBSTRUCTIONS
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                  14000
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      60
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          360                                                       6
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
         FIRE AFTER IMPACT
        REMARKS- DENS ALT 14000 FT.ENG RPM DCR WHEN THROTTLE WAS INCREASED.SIMILAR PWR LOSS THIS ACFT 50 HRS BEFORE
```

## Aircraft

- Registration: [N4074G](https://openairdocs.org/aircraft/N4074G), registered now, S/N 6704 (OpenAirDocs)
- Reported make and model: BELL 47G3B2
- Registry model: [Bell 47G-3B-2](https://openairdocs.org/model/bell-47g-3b-2) (registry code 1181029) (OpenAirDocs)
- Registry engine: [Lycoming TVO-435-GIA](https://openairdocs.org/engine/lycoming-tvo-435-gia) (registry code 41526, turbo-prop) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Midway Creek Camp

## Other investigations on N4074G (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 DEN76FTE94](https://openairdocs.org/ntsb/DEN76FTE94), Aug 24, 1976: Bell 47G3B2 (N4074G), Aspen, CO, destroyed
- [NTSB DEN70D0097](https://openairdocs.org/ntsb/DEN70D0097), Jul 17, 1969: Bell 47G3B2 (N4074G), Breckenridge, CO, 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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