# NTSB SEA78FYM32: S.N.I.A.S. SA316B, N5954, Portland, OR, May 11, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 11, 1978
- Place: Portland, OR · PORTLAND, OR
- Location: 45.5235° N, 122.6762° W: Placed by OpenAirDocs: center of Portland, OR, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.5235&lon=-122.6762&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report August 1, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 142029
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA78FYM32
- Page: https://openairdocs.org/ntsb/SEA78FYM32

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1825  78/5/11    PORTLAND,OR         S.N.I.A.S. SA316B   CR-  0  0  1  MISCELLANEOUS             AIRLINE TRANSPORT, AGE
        TIME - 1844                    N5954               PX-  0  0  1  DEMONSTRATION             33, 3702 TOTAL HOURS, 466
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          HOSPITAL PAD                PORTLAND ARPT
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: VERTICAL
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: COMPRESSOR STALLS
           MISCELLANEOUS ACTS,CONDITIONS - VIBRATION,EXCESSIVE
           POWERPLANT - COMPRESSOR ASSEMBLY: BEARING,ROTOR SHAFT
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- FRONT COMPRESSOR BEARING FAILED.
```

## Aircraft

- Registration: [N5954](https://openairdocs.org/deregistered/N5954-2013-08-20), registration cancelled 2013-08-20, S/N 1825, built 1970 (OpenAirDocs)
- Reported make and model: S.N.I.A.S. SA316B
- Registry model: [Sud SA316B ALOUETTE III](https://openairdocs.org/model/sud-sa316b-alouette-iii) (registry code 8680207) (OpenAirDocs)
- Registry engine: [Turbomeca ARTOUSTEIIIB](https://openairdocs.org/engine/turbomeca-artousteiiib) (registry code 60003, turbo-shaft) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: Substantial damage

## 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 19780511016029A](https://openairdocs.org/incident/19780511016029A), May 11, 1978: Aerosp SA316C, Portland, OR, Substantial damage. Front compressor bearing failed.

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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