# NTSB ANC76AA128: Hughes 369HS, N9172F, Hawk Inlet, AK, September 2, 1976

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: September 2, 1976
- Place: Hawk Inlet, AK · HAWK INLET, AK
- Location: 58.1258° N, 134.7531° W: Placed by OpenAirDocs: center of Hawk Inlet, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=58.1258&lon=-134.7531&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 3 fatal, 1 serious
- Status: Completed, report March 22, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 156113
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC76AA128
- Page: https://openairdocs.org/ntsb/ANC76AA128

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3955   76/9/2  NR.HAWK INLET,AK      HUGHES 369HS        CR-  1  0  0  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1715                    N9172F              PX-  2  1  0  AIR TAXI-PASSG            AGE 37, 6709 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            367 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          EXPLORATION CAMP            HAWK INLET,AK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: TREES                                     IN FLIGHT: CLIMB TO CRUISE
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED DISTANCE,SPEED,ALTITUDE OR CLEARANCE
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
        FACTOR(S)
           WEATHER - DOWNDRAFT,UPDRAFTS
           TERRAIN - OTHER
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                 UNKNOWN/NOT REPORTED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          UNKNOWN/NOT REPORTED                                     UNKNOWN/NOT REPORTED
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  WIND DIRECTION-DEGREES
          UNKNOWN/NOT REPORTED                                     210
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
           30                                                      VFR
        TYPE OF FLIGHT PLAN
          VFR
         FIRE AFTER IMPACT
        REMARKS- RIDGES ON BOTH SIDES OF VALLEY.
```

## Aircraft

- Registration: [N9172F](https://openairdocs.org/deregistered/N9172F-1977-07-14), registration cancelled 1977-07-14, S/N 340573S (OpenAirDocs)
- Reported make and model: HUGHES 369HS
- Registry model: [Hughes 369HS](https://openairdocs.org/model/hughes-369hs) (registry code 4470728) (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 19760902042039A](https://openairdocs.org/incident/19760902042039A), Sep 2, 1976: Hughes 369HS, Hawk Inlet, AK, Destroyed, 2 fatal. Ridges on both sides of valley.

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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