# NTSB SEA71FYC35: Hughes 269B, N9477F, Portland, OR, April 26, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 26, 1971
- Place: Portland, OR · PORTLAND, OR
- Location: 45.5235° N, 122.6762° W: Placed by OpenAirDocs: center of Portland, OR, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.5235&lon=-122.6762&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 29, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 160919
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA71FYC35
- Page: https://openairdocs.org/ntsb/SEA71FYC35

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1340  71/4/26    PORTLAND,OREG       HUGHES 269B         CR-  0  0  1  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1615                    N9477F              PX-  0  0  0  TRAINING                  AGE 30, 2668 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            9 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          PORTLAND,OREG               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: TREES                                     IN FLIGHT: HOVERING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - DIVERTED ATTENTION FROM OPERATION OF AIRCRAFT
           PILOT IN COMMAND - MISJUDGED CLEARANCE
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
        REMARKS- PLT WRKNG W/SLING LOAD.WATCHING LOAD OUT L WNDOW,ACFT STRTD TO SETTLE,DRIFTED TO R,BLDS HIT TREES.
```

## Aircraft

- Registration: [N9477F](https://openairdocs.org/deregistered/N9477F-2006-05-26), registration cancelled 2006-05-26, S/N 96-0253, built 1966 (OpenAirDocs)
- Reported make and model: HUGHES 269B
- Registry model: [Hughes 269B](https://openairdocs.org/model/hughes-269b) (registry code 4470502) (OpenAirDocs)
- Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N9477F (2)

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 SEA81DYP04](https://openairdocs.org/ntsb/SEA81DYP04), Nov 23, 1980: Hughes 269B (N9477F), Ephrata, WA, substantial damage
- [NTSB SEA68D0311](https://openairdocs.org/ntsb/SEA68D0311), Apr 20, 1968: Hughes 269B (N9477F), Tigard, OR, 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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