# NTSB SEA73FYG21: Sikorsky S-61A, N318Y, Chelan, WA, December 14, 1972

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: December 14, 1972
- Place: Chelan, WA · CHELAN, WA
- Location: 47.8443° N, 120.0136° W: Placed by OpenAirDocs: center of Chelan, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.8443&lon=-120.0136&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report November 19, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 169782
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA73FYG21
- Page: https://openairdocs.org/ntsb/SEA73FYG21

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4151  72/12/14 NR.CHELAN,WASH        SIKORSKY S-61A      CR-  2  0  0  COMMERCIAL                COMMERCIAL, AGE 29, 2329
        TIME - 1637                    N318Y               PX-  0  0  0  CONSTRUCTION              TOTAL HOURS, 1300 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         CHELAN,WASH                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: HOVERING
           COLLIDED WITH: OBJECT                                    LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: POWERPLANT FAILURE FOR UNDETERMINED REASONS
           TERRAIN - ROUGH/UNEVEN
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - FAILURE OF TWO OR MORE ENGINES
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 2 ENGINES
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- ENGS QUIT DURING SLING LOAD PICK UP OF LOGS.ACFT CRASHED DOWNSLOPE INTO ROCKS,LOGS.NO MALF FOUND.
```

## Aircraft

- Registration: [N318Y](https://openairdocs.org/deregistered/N318Y-2002-10-15), registration cancelled 2002-10-15, S/N 61094, built 1962 (OpenAirDocs)
- Reported make and model: SIKORSKY S-61A
- Registry model: [Sikorsky S-61A](https://openairdocs.org/model/sikorsky-s-61a) (registry code 814210C) (OpenAirDocs)
- Registry engine: [GE CT58 series](https://openairdocs.org/engine/ge-ct58-series) (registry code 30011, turbo-shaft) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: Destroyed

## Other investigations on N318Y (1)

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.

- [NTSB LAX02FA116](https://openairdocs.org/ntsb/LAX02FA116), Mar 26, 2002: Sikorsky S-61A (N318Y), Lakehead, CA, destroyed, 1 fatal. Probable cause: A loss of engine power for undetermined reasons, and the flight crew's failure to maintain rotor rpm following a loss of engine power while maneuvering.

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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