# NTSB SEA71FWD02: Brantly B-2, N5963X, Bellevue, WA, July 4, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 4, 1970
- Place: Bellevue, WA · BELLEVUE, WA
- Location: 47.6104° N, 122.2007° W: Placed by OpenAirDocs: center of Bellevue, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.6104&lon=-122.2007&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report June 16, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 121373
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA71FWD02
- Page: https://openairdocs.org/ntsb/SEA71FWD02

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3421   70/7/4    BELLEVUE,WASH       BRANTLY B-2         CR-  0  0  1  NONCOMMERCIAL             ATP,FLIGHT INSTR., AGE
        TIME - 1430                    N5963X              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  54, 8000 TOTAL HOURS, 400
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          BELLEVUE,WASH               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           DITCHING                                                 LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: POWERPLANT FAILURE FOR UNDETERMINED REASONS
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - AIRCRAFT CAME TO REST IN WATER
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON WATER
        REMARKS- SANK IN LAKE SAMMAMISH IN ABOUT 20FT OF WATER.
```

## Aircraft

- Registration: [N5963X](https://openairdocs.org/deregistered/N5963X-1976-06-24), registration cancelled 1976-06-24, S/N 105, built 1961 (OpenAirDocs)
- Reported make and model: BRANTLY B-2
- Registry model: [Brantly B-2](https://openairdocs.org/model/brantly-b-2) (registry code 1440502) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N5963X (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB SEA69F0025](https://openairdocs.org/ntsb/SEA69F0025), Jun 13, 1968: Brantly B-2 (N5963X), Albany, OR, substantial damage

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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