# NTSB OAK77DVW31: Bell 47SG, N979B, Ash Springs, NV, June 25, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 25, 1977
- Place: Ash Springs, NV · ASH SPRINGS, NV
- Location: 37.4605° N, 115.1931° W: Placed by OpenAirDocs: center of Ash Springs, NV, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.4605&lon=-115.1931&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report September 19, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 147115
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK77DVW31
- Page: https://openairdocs.org/ntsb/OAK77DVW31

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1821  77/6/25  NR.ASH SPRINGS,NV     BELL 47SG           CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1230                    N979B               PX-  0  0  2  AIR TAXI-PASSG            AGE 24, 4380 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            9 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         ASH SPRINGS,NV               RETURN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: POWER-ON LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
        FACTOR(S)
           WEATHER - HIGH DENSITY ALTITUDE
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          SCATTERED                                                UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      78
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          220                                                       5
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- DA APPROX 11300FT. WND GUSTING TO 15KTS.
```

## Aircraft

- Registration: [N979B](https://openairdocs.org/deregistered/N979B-2006-01-09), registration cancelled 2006-01-09, S/N 1380, built 1955 (OpenAirDocs)
- Reported make and model: BELL 47SG
- Registry model: [Bell 47G](https://openairdocs.org/model/bell-47g) (registry code 1181002) (OpenAirDocs)
- Registry engine: [Franklin 6VS-335 series](https://openairdocs.org/engine/franklin-6vs-335-series) (registry code 27040, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Hico Turnoff Pad

## Other investigations on N979B (3)

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 SEA70DWG03](https://openairdocs.org/ntsb/SEA70DWG03-115039), Jul 11, 1970: Bell 47G (N979B), Conconully, WA, substantial damage
- [NTSB SEA70D0003](https://openairdocs.org/ntsb/SEA70D0003), Jun 1, 1969: Bell 47G (N979B), Ritzville, WA, substantial damage
- [NTSB SEA67A0031](https://openairdocs.org/ntsb/SEA67A0031), Oct 12, 1966: Bell 47G (N979B), Tonasket, WA, 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.