# NTSB DEN72DTE24: Bell 204B, N7937S, Dillon, CO, September 1, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 1, 1971
- Place: Dillon, CO · DILLON, CO
- Location: 39.6278° N, 106.0442° W: Placed by OpenAirDocs: center of Dillon, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.6278&lon=-106.0442&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report April 10, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 163361
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN72DTE24
- Page: https://openairdocs.org/ntsb/DEN72DTE24

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3254   71/9/1    DILLON,COLO         BELL 204B           CR-  0  0  1  COMMERCIAL                ATP,FLIGHT INSTR., AGE
        TIME - 1800                    N7937S              PX-  0  0  0  CONSTRUCTION              30, 3226 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            2200 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          DILLON,COLO                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: TREES                                     IN FLIGHT: HOVERING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED CLEARANCE
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
        REMARKS- SETTING PWR LINE POLE IN PLACE,M/R BLDS HIT TOPS OF TREES.
```

## Aircraft

- Registration: N7937S (not matched to a registry record)
- Reported make and model: BELL 204B
- Category: Helicopter
- Engines: turbo shaft
- Damage: 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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