# NTSB ANC67A0014: Bell 47G-2, N6717D, Tyonek, AK, July 24, 1966

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 24, 1966
- Place: Tyonek, AK · TYONEK, AK
- Location: 61.0681° N, 151.1369° W: Placed by OpenAirDocs: center of Tyonek, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=61.0681&lon=-151.1369&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report March 31, 1967
- Report: Brief approved by the director
- NTSB case key (mKey): 122431
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC67A0014
- Page: https://openairdocs.org/ntsb/ANC67A0014

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0684  66/7/24  NR.TYONEK ALAS        BELL 47G-2          CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 41, 8694
        TIME - 1115                    N6717D              PX-  0  0  2  CTR PASSG-D               TOTAL HOURS, 2500 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: POWER-ON LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED SPEED AND ALTITUDE
        FACTOR(S)
           WEATHER - HIGH DENSITY ALTITUDE
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      65
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
          CALM                                                     VFR
        TYPE OF FLIGHT PLAN
          NONE
        REMARKS- LATE FLARE-TOUCHED DOWN ON HEELS OF FLOATS-MAIN ROTOR SEVERED TAIL BOOM.GEOLOGICAL SURVEY CONTRACT
```

## Aircraft

- Registration: [N6717D](https://openairdocs.org/deregistered/N6717D-2012-11-26), registration cancelled 2012-11-26, S/N 2210, built 1958 (OpenAirDocs)
- Reported make and model: BELL 47G-2
- Registry model: [Bell 47G-2](https://openairdocs.org/model/bell-47g-2) (registry code 1181008) (OpenAirDocs)
- Registry engine: [Lycoming VO-435 series](https://openairdocs.org/engine/lycoming-vo-435-series) (registry code 41525, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N6717D (6)

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 SEA75FYG10](https://openairdocs.org/ntsb/SEA75FYG10), Aug 27, 1974: Bell 47G-2 (N6717D), Quincy, WA, destroyed
- [NTSB SEA75DYG07](https://openairdocs.org/ntsb/SEA75DYG07), Aug 14, 1974: Bell 47G-2 (N6717D), Royal City, WA, substantial damage
- [NTSB SEA73DYG02](https://openairdocs.org/ntsb/SEA73DYG02), Jul 7, 1972: Bell 47G-2 (N6717D), Twisp, WA, substantial damage
- [NTSB SEA68D0297](https://openairdocs.org/ntsb/SEA68D0297), May 10, 1968: Bell 47G-2 (N6717D), Mansfield, WA, substantial damage
- [NTSB SEA68D0296](https://openairdocs.org/ntsb/SEA68D0296), Apr 24, 1968: Bell 47G-2 (N6717D), Bridgeport, WA, substantial damage
- [NTSB UNK65X0560](https://openairdocs.org/ntsb/UNK65X0560), Nov 4, 1964: Bell 47G2 (N6717D), Umiat, AK, 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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