# NTSB SEA81DYP04: Hughes 269B, N9477F, Ephrata, WA, November 23, 1980

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: November 23, 1980
- Place: Ephrata, WA · EPHRATA, WA
- Location: 47.3121° N, 119.5344° W: Placed by OpenAirDocs: center of Ephrata, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.3121&lon=-119.5344&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report January 13, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 127955
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA81DYP04
- Page: https://openairdocs.org/ntsb/SEA81DYP04

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3383  80/11/23   EPHRATA,WA          HUGHES 269B         CR-  0  0  2  INSTRUCTIONAL             ATP,FLIGHT INSTR., AGE
        TIME - 1622                    N9477F              PX-  0  0  0  DUAL                      36, 13150 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            685 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - EPHRATA MUNI
        DEPARTURE POINT             INTENDED DESTINATION
          EPHRATA,WA                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ROLL OVER                                                IN FLIGHT: HOVERING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED CLEARANCE
        FACTOR(S)
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: POORLY MAINTAINED RAMP/TAXIWAY SURFACE
        REMARKS- R SKID CAUGHT IN CRACK ON RAMP.
```

## 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
- Airport: Ephrata Muni

## 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 19801123074409A](https://openairdocs.org/incident/19801123074409A), Nov 23, 1980: Hughes 269B, Ephrata, WA, Substantial damage. Skid struck ramp while drifting sideways in hover. Helicopter rolled over.

## 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 SEA71FYC35](https://openairdocs.org/ntsb/SEA71FYC35), Apr 26, 1971: Hughes 269B (N9477F), Portland, OR, 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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