# NTSB ANC68A0001: Bell 47D1, N157B, Tok, AK, July 4, 1967

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 4, 1967
- Place: Tok, AK · TOK, AK
- Location: 63.3367° N, 142.9856° W: Placed by OpenAirDocs: center of Tok, AK, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=63.3367&lon=-142.9856&mi=10
- Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report May 14, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 115976
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC68A0001
- Page: https://openairdocs.org/ntsb/ANC68A0001

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-1099   67/7/4  NR.TOK,ALAS           BELL 47D1           CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 42, 7900
        TIME - 1700                    N157B               PX-  0  0  1  AIR TAXI-PASSG            TOTAL HOURS, 20 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ROLL OVER                                                STATIC: IDLING ROTORS
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - SELECTED UNSUITABLE TERRAIN
           TERRAIN - SANDY
        FACTOR(S)
           WEATHER - UNFAVORABLE WIND CONDITIONS
           MISCELLANEOUS ACTS,CONDITIONS - AIRCRAFT CAME TO REST IN WATER
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          UNKNOWN/NOT REPORTED                                      6000
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      48
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          270                                                       12
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- LANDED ON LAKE BANK,12 FT ABOVE LAKE LEVEL.SOFT EARTH GAVE WAY.ACFT SLIDE INTO WATER.GUSTY WINDS.
```

## Aircraft

- Registration: [N157B](https://openairdocs.org/aircraft/N157B), registered now, S/N 11, built 1947 (OpenAirDocs)
- Reported make and model: BELL 47D1
- Registry model: [Bell 47D1](https://openairdocs.org/model/bell-47d1) (registry code 1180802) (OpenAirDocs)
- Registry engine: [Franklin 6V4 series](https://openairdocs.org/engine/franklin-6v4-series) (registry code 27033, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N157B (1)

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 CHI74FEK26](https://openairdocs.org/ntsb/CHI74FEK26), May 21, 1974: Bell 47D1 (N157B), Circleville, OH, 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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