# NTSB ANC71AA056: Sud Aviatn SA318C, N9222, Anaktvk Pass, AK, May 12, 1971

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: May 12, 1971
- Place: Anaktvk Pass, AK · ANAKTVK PASS, AK
- Location: 68.1474° N, 151.6982° W: Placed by OpenAirDocs: center of Anaktuvuk Pass, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=68.1474&lon=-151.6982&mi=10
- Phase of flight: [Uncontrolled descent](https://openairdocs.org/ntsb-phases/650) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal, 2 serious
- Status: Completed, report November 5, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 161200
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC71AA056
- Page: https://openairdocs.org/ntsb/ANC71AA056

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0281  71/5/12    ANAKTVK PASS,ALAS   SUD AVIATN SA318C   CR-  0  1  0  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1930                    N9222               PX-  2  1  0  AIR TAXI-PASSG            AGE 31, 2362 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            155 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          SAGWON,ALAS                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - CONTINUED VFR FLIGHT INTO ADVERSE WEATHER CONDITIONS
           PILOT IN COMMAND - SPATIAL DISORIENTATION
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - WHITEOUT
           TERRAIN - SNOW-COVERED
           WEATHER - LOW CEILING
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        MISSING AIRCRAFT - LATER RECOVERED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                  300
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  WIND DIRECTION-DEGREES
          NONE                                                     360
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
           10                                                      VFR
        TYPE OF FLIGHT PLAN
          NONE
        REMARKS- RECOVERY DATE 5/13/71. FLAT SNOW COVERED AREA ALMOST DEVOID OF VISIBLE OBJECTS.
```

## Aircraft

- Registration: [N9222](https://openairdocs.org/deregistered/N9222-1981-10-14), registration cancelled 1981-10-14, S/N 2060 (OpenAirDocs)
- Reported make and model: SUD AVIATN SA318C
- Registry model: [Sud SA 318C ALOUETTE AST](https://openairdocs.org/model/sud-sa-318c-alouette-ast) (registry code 8680508) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: 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.

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