# NTSB SEA65A0044: Bell 47D1, N917B, Roseburg, OR, February 23, 1965

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: February 23, 1965
- Place: Roseburg, OR · ROSEBURG, OR
- Location: 43.2236° N, 123.3520° W: Placed by OpenAirDocs: center of Roseburg, OR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.2236&lon=-123.3520&mi=10
- Phase of flight: [Emergency descent](https://openairdocs.org/ntsb-phases/600) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report April 19, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 179759
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA65A0044
- Page: https://openairdocs.org/ntsb/SEA65A0044

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0072  65/2/23    ROSEBURG OREG       BELL 47D1           CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1410                    N917B               PX-  0  0  0  DUAL                      AGE 33, 1609 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            28 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - ROSEBURG MUN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: AUTOROTATIVE DESCENT
           ROLL OVER                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
           DUAL STUDENT - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS
        FACTOR(S)
           TERRAIN - WET,SOFT GROUND
           MISCELLANEOUS ACTS,CONDITIONS - SIMULATED CONDITIONS
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
```

## Aircraft

- Registration: [N917B](https://openairdocs.org/aircraft/N917B), registered now, S/N 606, built 1952 (OpenAirDocs)
- Reported make and model: BELL 47D1
- Registry model: [Bell 47D1](https://openairdocs.org/model/bell-47d1) (registry code 1180802) (OpenAirDocs)
- Registry engine: [Franklin 6V4 series](https://openairdocs.org/engine/franklin-6v4-series) (registry code 27033, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Roseburg Mun

## Other investigations on N917B (3)

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 LAX88LA160](https://openairdocs.org/ntsb/LAX88LA160), Apr 13, 1988: Bell 47D1 (N917B), Taft, CA, substantial damage
- [NTSB LAX87LA294](https://openairdocs.org/ntsb/LAX87LA294), Aug 5, 1987: Bell 47D-1 (N917B), Taft, CA, substantial damage
- [NTSB LAX76FUQ32](https://openairdocs.org/ntsb/LAX76FUQ32), Apr 7, 1976: Bell 47D-1 (N917B), Lancaster, CA, 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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