# NTSB SEA75DYE41: Hiller Acft UH-12E, N90469, Concrete, WA, May 5, 1975

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: May 5, 1975
- Place: Concrete, WA · CONCRETE, WA
- Location: 48.5328° N, 121.7541° W: Placed by OpenAirDocs: center of Concrete, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=48.5328&lon=-121.7541&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 2 uninjured
- Status: Completed, report July 18, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 170746
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA75DYE41
- Page: https://openairdocs.org/ntsb/SEA75DYE41

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1511   75/5/5    CONCRETE,WA         HILLER ACFT UH-12E  CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 32, 4200
        TIME - 1600                    N90469              PX-  0  0  2  CTR PASSG-D               TOTAL HOURS, 18 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - FINNY CREEK
        DEPARTURE POINT             INTENDED DESTINATION
          CONCRETE,WA                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
        FACTOR(S)
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
           WEATHER - UNFAVORABLE WIND CONDITIONS
           TERRAIN - ROUGH/UNEVEN
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                  4000
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     RAIN
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  RELATIVE BEARING OF WIND
          FOG                                                      HEAD WIND 338-022 DEGREES
        TEMPERATURE-F                                            WIND DIRECTION-DEGREES
           40                                                      230
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
           20                                                      VFR
        TYPE OF FLIGHT PLAN
          NONE
        REMARKS- RPM DECR AFTER STARTED FWD MOTION FROM HOVER. HI TIME HELI PLT,LOW TIME IN TYPE. GUSTING TO 25K.
```

## Aircraft

- Registration: [N90469](https://openairdocs.org/deregistered/N90469-2000-03-07), registration cancelled 2000-03-07, S/N 2358 (OpenAirDocs)
- Reported make and model: HILLER ACFT UH-12E
- Registry model: [Hiller UH-12E](https://openairdocs.org/model/hiller-uh-12e) (registry code 4360122) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed
- Airport: Finny Creek

## 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 19750505010609A](https://openairdocs.org/incident/19750505010609A), May 5, 1975: Hiller UH12E, Concrete, WA, Destroyed. RPM decr after started fwd motion from hover. Hi time heli plt,low time in type. Gusting to 25K.

## Other investigations on N90469 (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 FTW94LA144](https://openairdocs.org/ntsb/FTW94LA144), May 4, 1994: Hiller UH-12E (N90469), Osage, AR, substantial damage. Probable cause: FUEL EXHAUSTION DUE TO THE PILOT'S FAILURE TO REFUEL AND THE LACK OF SUITABLE TERRAIN FOR A FORCED LANDING.
- [NTSB SEA74DYI10](https://openairdocs.org/ntsb/SEA74DYI10), Mar 24, 1974: Hiller Acft UH-12E (N90469), London, 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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