# NTSB DEN80DTM10: Bell 47G3B1, N64711, Heber, UT, February 20, 1980

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: February 20, 1980
- Place: Heber, UT · HEBER, UT
- Location: 40.5414° N, 111.3879° W: Placed by OpenAirDocs: center of Heber, UT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.5414&lon=-111.3879&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report March 13, 1980
- Report: Brief approved by the director
- NTSB case key (mKey): 136320
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN80DTM10
- Page: https://openairdocs.org/ntsb/DEN80DTM10

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1347  80/2/20    HEBER,UT            BELL 47G3B1         CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1300                    N64711              PX-  0  0  0  DUAL                      AGE 31, 4270 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            60 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - HEBER VALLEY
        DEPARTURE POINT             INTENDED DESTINATION
          HEBER,UT                    LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           DUAL STUDENT - MISJUDGED DISTANCE AND ALTITUDE
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
        REMARKS- ROTOR BLADES HIT TAIL BOOM DRG SIM PWR OFF LNDG.
```

## Aircraft

- Registration: N64711 (not matched to a registry record)
- Reported make and model: BELL 47G3B1
- Category: Helicopter
- Engines: turbo shaft
- Damage: Substantial damage
- Airport: Heber Valley

## 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 19800220004569A](https://openairdocs.org/incident/19800220004569A), Feb 20, 1980: Bell 47G3B1, Heber City, UT, Substantial damage. Instructor made tail low autorotation landing. Main rotor cut off tail boom.

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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