# NTSB SEA78FYM02: Bell 47G3B1, N1199W, Alsea, OR, October 2, 1977

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: October 2, 1977
- Place: Alsea, OR · ALSEA, OR
- Location: 44.3818° N, 123.5958° W: Placed by OpenAirDocs: center of Alsea, OR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.3818&lon=-123.5958&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report December 29, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 144597
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA78FYM02
- Page: https://openairdocs.org/ntsb/SEA78FYM02

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3593   77/10/2   ALSEA,OR            BELL 47G3B1         CR-  0  0  1  COMMERCIAL                PRIVATE, AGE 29, 1400
        TIME - 1215                    N1199W              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 1100 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - SWAMP CRK HELPORT
        DEPARTURE POINT             INTENDED DESTINATION
          ALSEA,OR                    LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           NOSE OVER/DOWN                                           LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: CLUTCH ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - BOGUS PART
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 1000                       KIND OF OPERATION - SPRAYING FORESTS
          KIND OF CROP - FOREST-TREES                              TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - USED
          CRASH HELMET - AVAILABLE USED                            COCKPIT CRASHPAD - NOT INSTALLED
          CRASH BAR - NOT INSTALLED                                TANK/HOPPER-LOCATION - SIDES
          TERRAIN-TYPE -MOUNTAINOUS
        REMARKS- CENTRAL HUB SEPTD FM CENTRIFUGAL CLUTCH DRUM,P/N 47-620-691,MANUF UNK,WEB BELOW THICKNESS REQUIMT.
```

## Aircraft

- Registration: [N1199W](https://openairdocs.org/deregistered/N1199W-2012-06-04), registration cancelled 2012-06-04, S/N 6512, built 1966 (OpenAirDocs)
- Reported make and model: BELL 47G3B1
- Registry model: [Bell 47G-3B-1](https://openairdocs.org/model/bell-47g-3b-1) (registry code 1181028) (OpenAirDocs)
- Registry engine: [Lycoming TVO-435-GIA](https://openairdocs.org/engine/lycoming-tvo-435-gia) (registry code 41526, turbo-prop) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Swamp Crk Helport

## 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 19771002034819A](https://openairdocs.org/incident/19771002034819A), Oct 2, 1977: Bell 47G3B1, Alsea, OR, Substantial damage. Central hub septd fm centrifugal clutch drum,p/n 47-620-691,manuf unk,web below thickness requimt.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.