# NTSB DEN80DTM01: Bell 47G3B1, N8537F, Torrey, UT, October 1, 1979

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 1, 1979
- Place: Torrey, UT · TORREY, UT
- Location: 38.3073° N, 111.4271° W: Placed by OpenAirDocs: center of Torrey, UT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.3073&lon=-111.4271&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report January 15, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 133253
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN80DTM01
- Page: https://openairdocs.org/ntsb/DEN80DTM01

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3439   79/10/1 NR.TORREY,UT          BELL 47G3B1         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 30, 2457
        TIME - 1700                    N8537F              PX-  0  0  2  CTR PASSG-D               TOTAL HOURS, 896 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         TORREY,UT                    TORREY,UT
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             TAKEOFF: ABORTED
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
        FACTOR(S)
           TERRAIN - ROUGH/UNEVEN
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING OFF AIRPORT
                                  SUSPECTED MECHANICAL DISCREPANCY
```

## Aircraft

- Registration: [N8537F](https://openairdocs.org/deregistered/N8537F-2014-11-24), registration cancelled 2014-11-24, S/N 3390, built 1965 (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: Substantial damage

## 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 19791001024819A](https://openairdocs.org/incident/19791001024819A), Oct 1, 1979: Bell 47G3B1, Torrey, UT, Substantial damage. Pilot stated engine lost RPM on takeoff. Hit tail rotor on rocks. No engine defects noted.

## Other investigations on N8537F (5)

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 SEA97LA158](https://openairdocs.org/ntsb/SEA97LA158), Jul 5, 1997: Bell 47G-3B-1 (N8537F), Roosevelt, UT, substantial damage. Probable cause: the pilot's failure to maintain directional control. Wind gusts were a factor.
- [NTSB SEA69A0008](https://openairdocs.org/ntsb/SEA69A0008), Jul 23, 1968: Bell 47G3B1 (N8537F), North Fork, ID, destroyed, 1 fatal
- [NTSB DEN67A0052](https://openairdocs.org/ntsb/DEN67A0052), Mar 10, 1967: Bell 47G3B1 (N8537F), Cody, WY, destroyed
- [NTSB DEN67A0048](https://openairdocs.org/ntsb/DEN67A0048), Feb 21, 1967: Bell 47G3B1 (N8537F), Riverton, WY, substantial damage
- [NTSB DEN66A0025](https://openairdocs.org/ntsb/DEN66A0025), Oct 5, 1965: Bell 47G3B1 (N8537F), Salt Lake City, UT, destroyed

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.