# NTSB ANC80FA065: Hughes 369HS, N500HC, Unalakleet, AK, July 2, 1980

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 2, 1980
- Place: Unalakleet, AK · UNALAKLEET, AK
- Location: 63.8930° N, 160.7958° W: Placed by OpenAirDocs: center of Unalakleet, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=63.8930&lon=-160.7958&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report February 11, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 136421
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC80FA065
- Page: https://openairdocs.org/ntsb/ANC80FA065

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3213   80/7/2  NR.UNALAKLEET,AK      HUGHES 369HS        CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 30, 6300
        TIME - 1500                    N500HC              PX-  0  0  2  OTHER PUBLIC              TOTAL HOURS, 110 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          TIMBER CREEK,AK             UNALAKLEET,AK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: POWERPLANT FAILURE FOR UNDETERMINED REASONS
        FACTOR(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - WATER IN FUEL
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - FUEL CONTAMINATION-EXCLUSIVE OF WATER IN FUEL
           POWERPLANT - FUEL SYSTEM: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - EXCESSIVE-WEAR/PLAY
           TERRAIN - WET,SOFT GROUND
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- WTR FM CONDENSATION IN MAIN SUMP.PARTICULATE MATTER IN GOV & FUEL.BYPASS VLV OPERD BLO SPEC.
```

## Aircraft

- Registration: N500HC (not matched to a registry record)
- Reported make and model: HUGHES 369HS
- Category: Helicopter
- Engines: turbo shaft
- Damage: 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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