# NTSB DEN67A0049: Bell 47G3B1, N8541F, Estes Park, CO, March 1, 1967

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: March 1, 1967
- Place: Estes Park, CO · ESTES PARK, CO
- Location: 40.3689° N, 105.5312° W: Placed by OpenAirDocs: center of Estes Park, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.3689&lon=-105.5312&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 2 minor
- Status: Completed, report June 26, 1967
- Report: Brief approved by the director
- NTSB case key (mKey): 119104
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN67A0049
- Page: https://openairdocs.org/ntsb/DEN67A0049

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0081   67/3/1    ESTES PARK,COLO     BELL 47G3B1         CR-  0  1  0  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 0800                    N8541F              PX-  0  0  2  CTR PASSG-D               AGE 44, 10000 TOTAL
                                       DAMAGE-DESTROYED    OT-  0  0  0                            HOURS, 2500 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            IN FLIGHT: NORMAL CRUISE
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
           PILOT IN COMMAND - SPONTANEOUS-IMPROPER ACTION
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
        REMARKS- PLT APPLIED CYCLIC CONTROL ABRUPTLY TO AVOID WIRES.MAIN ROTOR BLADE SEVERED TAIL ROTOR DRIVE SHAFT
```

## Aircraft

- Registration: [N8541F](https://openairdocs.org/deregistered/N8541F-2018-02-21), registration cancelled 2018-02-21, S/N 6532, built 1966 (OpenAirDocs)
- Reported make and model: BELL 47G3B1
- Registry model: [Bell 47G-3B-1](https://openairdocs.org/model/bell-47g-3b-1) (registry code 1181028) (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: Destroyed

## Other investigations on N8541F (1)

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 DEN70F0008](https://openairdocs.org/ntsb/DEN70F0008), Jun 14, 1969: Bell 47G3B1 (N8541F), Broomfield, 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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.