# NTSB ANC75AA078: Bell 206, N59521, Deadhorse, AK, April 28, 1975

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: April 28, 1975
- Place: Deadhorse, AK · DEADHORSE, AK
- Location: 70.2056° N, 148.5117° W: Placed by OpenAirDocs: center of Deadhorse, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=70.2056&lon=-148.5117&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal, 2 serious
- Status: Completed, report August 4, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 149301
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC75AA078
- Page: https://openairdocs.org/ntsb/ANC75AA078

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1705  75/4/28    DEADHORSE,AK        BELL 206            CR-  0  1  0  COMMERCIAL                COMMERCIAL, AGE 37, 4950
        TIME - 2300                    N59521              PX-  2  1  0  AIR TAXI-PASSG            TOTAL HOURS, 520 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          ANAKTUVAK PASS,AK           DEADHORSE,AK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - CONTINUED VFR FLIGHT INTO ADVERSE WEATHER CONDITIONS
           PILOT IN COMMAND - IMPROPER IN-FLIGHT DECISIONS OR PLANNING
        FACTOR(S)
           PILOT IN COMMAND - ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
           INSTRUMENTS/EQUIPMENT AND ACCESSORIES - FLIGHT AND NAVIGATION INSTRUMENTS: OTHER
           WEATHER - FOG
           WEATHER - SNOW
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                  1000
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          ZERO                                                     SNOW
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TYPE OF WEATHER CONDITIONS
          FOG                                                      IFR
        TYPE OF FLIGHT PLAN
          NONE
         FIRE AFTER IMPACT
        REMARKS- FLEW INTO DETERIORATING WEA.PLT SAID GYRO INST  NOT WORKING PROPERLY.
```

## Aircraft

- Registration: [N59521](https://openairdocs.org/deregistered/N59521-1975-08-27), registration cancelled 1975-08-27, S/N 1332 (OpenAirDocs)
- Reported make and model: BELL 206
- Registry model: [Bell 206B](https://openairdocs.org/model/bell-206b) (registry code 1181511) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: Destroyed

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19750428020489A](https://openairdocs.org/incident/19750428020489A), Apr 28, 1975: Bell 206B, Deadhorse, AK, Destroyed, 2 fatal. Flew into deteriorating wea. Plt said gyro inst not working properly.

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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