# NTSB SEA74FYC40: Sikorsky S-55B, N5663, Corvallis, OR, March 22, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 22, 1974
- Place: Corvallis, OR · CORVALLIS, OR
- Location: 44.5699° N, 123.2783° W: Placed by OpenAirDocs: center of Corvallis, OR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.5699&lon=-123.2783&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report May 23, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 186254
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA74FYC40
- Page: https://openairdocs.org/ntsb/SEA74FYC40

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0934  74/3/22    CORVALLIS,OREG      SIKORSKY S-55B      CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 35, 3888
        TIME - 1130                    N5663               PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 336 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          CORVALLIS,OREG              LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: EN ROUTE TO TREAT CROP
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISMANAGEMENT OF FUEL
           MISCELLANEOUS ACTS,CONDITIONS - FUEL STARVATION
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -   25                       KIND OF OPERATION - FERTILIZING (DUST)
          KIND OF CROP - GRAIN FIELDS                              TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GOGGLES - USED
          COCKPIT CRASHPAD - INSTALLED                             CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - SLING LOADED                      TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  260                 SWATH RUN-HOW FLOWN - UPWIND
          PROCEDURE TURNAROUND - ENTRY TO PROCEDURE TURN
```

## Aircraft

- Registration: [N5663](https://openairdocs.org/aircraft/N5663), registered now, S/N 55-1267, built 1959 (OpenAirDocs)
- Reported make and model: SIKORSKY S-55B
- Registry model: [Sikorsky S-55B](https://openairdocs.org/model/sikorsky-s-55b) (registry code 8141604) (OpenAirDocs)
- Registry engine: [Wright R-1300 series](https://openairdocs.org/engine/wright-r-1300-series) (registry code 67060, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- 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 19740322008299A](https://openairdocs.org/incident/19740322008299A), Mar 22, 1974: Skrsky S55B, Corvallis, OR, Substantial damage

## Other investigations on N5663 (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 WPR11FA350](https://openairdocs.org/ntsb/WPR11FA350), Jul 25, 2011: Sikorsky S-55B (N5663), Chelan, WA, substantial damage, 1 fatal. Probable cause: The pilot’s failure to maintain clearance from power lines while maneuvering at a low altitude.

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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