# NTSB LAX66A0004: Bell 47G-3B, N73947, Grand Canyon, AZ, July 11, 1966

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: July 11, 1966
- Place: Grand Canyon, AZ · GRAND CANYON, AZ
- Location: 36.0544° N, 112.1393° W: Placed by OpenAirDocs: center of Grand Canyon, AZ, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.0544&lon=-112.1393&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report March 3, 1967
- Report: Brief approved by the director
- NTSB case key (mKey): 171141
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX66A0004
- Page: https://openairdocs.org/ntsb/LAX66A0004-171141

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0654  66/7/11    UNKNOWN/NOT REPORTEDBELL 47G-3B         CR-  0  1  0  COMMERCIAL                COMMERCIAL, AGE 41, 5160
        TIME - 1010                    N73947              PX-  0  0  0  CTR CARGO-D               TOTAL HOURS, 2000 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: WIRES/POLES                               IN FLIGHT: POWER-ON DESCENT
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED CLEARANCE
         FIRE AFTER IMPACT
        REMARKS- 600-LB EXTERNAL SLING LOAD 50 FT BENEATH HELICOPTER WAS OSCILLATING. PILOT WAS AWARE OF TELE-LINE.
```

## Aircraft

- Registration: [N73947](https://openairdocs.org/deregistered/N73947-2010-09-21), registration cancelled 2010-09-21, S/N 2821 (OpenAirDocs)
- Reported make and model: BELL 47G-3B
- Registry model: [Bell 47G-3B-1](https://openairdocs.org/model/bell-47g-3b-1) (registry code 1181028) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed

## Other investigations on N73947 (2)

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 MIA88FA192](https://openairdocs.org/ntsb/MIA88FA192), Jun 15, 1988: Bell 47G3B-1 (N73947), Benoit, MS, substantial damage
- [NTSB DEN66A0051](https://openairdocs.org/ntsb/DEN66A0051), Dec 30, 1965: Bell 47G3B1 (N73947), Mesa, AZ, 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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