# NTSB SEA70FWD13: Bell 47-G2, N6141, Maple Valley, WA, May 9, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 9, 1970
- Place: Maple Valley, WA · MAPLE VALLEY, WA
- Location: 47.3671° N, 122.0348° W: Placed by OpenAirDocs: center of Maple Valley, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.3671&lon=-122.0348&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 23, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 121950
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA70FWD13
- Page: https://openairdocs.org/ntsb/SEA70FWD13

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2019   70/5/9  NR.MAPLE VALLEY,WASH  BELL 47-G2          CR-  0  0  1  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1215                    N6141               PX-  0  0  0  TRAINING                  AGE 35, 303 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            17 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         MAPLE VALLEY,WASH            LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ROLL OVER                                                LANDING: POWER-ON LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - SELECTED UNSUITABLE TERRAIN
           PILOT IN COMMAND - MISJUDGED DISTANCE
           PILOT IN COMMAND - FAILED TO INITIATE GO-AROUND
           PERSONNEL - FLIGHT INSTRUCTOR: INADEQUATE SUPERVISION OF FLIGHT
           TERRAIN - ROUGH/UNEVEN
        REMARKS- STUDENT PRACTICING LDGS TO A LEDGE,ACFT SLID OFF LEDGE BACKWARD.
```

## Aircraft

- Registration: [N6141](https://openairdocs.org/aircraft/N6141), registered now, S/N 1506 (OpenAirDocs)
- Reported make and model: BELL 47-G2
- Registry model: [Bell 47G-2](https://openairdocs.org/model/bell-47g-2) (registry code 1181008) (OpenAirDocs)
- Registry engine: [Lycoming VO-435 series](https://openairdocs.org/engine/lycoming-vo-435-series) (registry code 41525, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Cedar Grove

## Other investigations on N6141 (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 SEA88LA014](https://openairdocs.org/ntsb/SEA88LA014), Oct 26, 1987: Bell 47G2 (N6141), Lebanon, OR, substantial damage
- [NTSB UNK68X0141](https://openairdocs.org/ntsb/UNK68X0141), May 24, 1968: Bell 47G-2 (N6141), Alberta, Canada, destroyed
- [NTSB ANC67A0012](https://openairdocs.org/ntsb/ANC67A0012), Jul 21, 1966: Bell 47G-2 (N6141), Copper Cntr, AK, 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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