# NTSB SEA71DVQ16: Bell 47G-2, N73284, Sixes, OR, December 21, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 21, 1970
- Place: Sixes, OR · SIXES, OR
- Location: 42.8201° N, 124.4832° W: Placed by OpenAirDocs: center of Sixes, OR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.8201&lon=-124.4832&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 1, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 159638
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA71DVQ16
- Page: https://openairdocs.org/ntsb/SEA71DVQ16

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4464  70/12/21   SIXES,OREG          BELL 47G-2          CR-  0  0  2  COMMERCIAL                COMMERCIAL, AGE 46, 15000
        TIME - 1000                    N73284              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 3200 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          NORTH BEND,OREG             SIXES,OREG
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: RETURN TO STRIP
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - IGNITION SYSTEM: MAGNETOS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- R MAG FAILED. LND ON LOGGING ROAD. RECONNAISANCE FLT FOR SEEDING OPERATION. NO LOAD ABD.
```

## Aircraft

- Registration: [N73284](https://openairdocs.org/deregistered/N73284-2013-08-21), registration cancelled 2013-08-21, S/N 2908, built 1964 (OpenAirDocs)
- Reported make and model: BELL 47G-2
- 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

## Other investigations on N73284 (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 CHI98LA198](https://openairdocs.org/ntsb/CHI98LA198), Jun 10, 1998: Bell 47G (N73284), Le Center, MN, destroyed. Probable cause: the pilot's failure to maintain clearance with the wire. A factor associated with the accident was the wire which the helicopter contacted.
- [NTSB CHI91DER05](https://openairdocs.org/ntsb/CHI91DER05), Jun 11, 1991: Bell 47G3B1 (N73284), Lasalle, MN, substantial damage. Probable cause: THE PILOT'S FAILURE TO MAINTAIN ADEQUATE CLEARANCE FROM THE TERRAIN. A RELATED FACTOR IS THE PILOT'S MISJUDGED ALTITUDE ABOVE THE CROP.
- [NTSB SEA80FYP34](https://openairdocs.org/ntsb/SEA80FYP34), Aug 23, 1980: Bell 47G-2 (N73284), Sunnyside, WA, substantial damage
- [NTSB SEA73FYG13](https://openairdocs.org/ntsb/SEA73FYG13), Sep 23, 1972: Bell 47-G2A (N73284), Selah, WA, substantial damage, 1 fatal
- [NTSB SEA68A0074](https://openairdocs.org/ntsb/SEA68A0074-109548), Jun 27, 1968: Bell 47G3B1 (N73284), Lewiston, ID, 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.