# NTSB SEA70DWA06: Hiller Acft FH1100, N750FH, Beaverton, OR, March 9, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 9, 1970
- Place: Beaverton, OR · BEAVERTON, OR
- Location: 45.4781° N, 122.8171° W: Placed by OpenAirDocs: center of Beaverton, OR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.4781&lon=-122.8171&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 25, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 135493
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA70DWA06
- Page: https://openairdocs.org/ntsb/SEA70DWA06

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0769   70/3/9    BEAVERTON,OREG      HILLER ACFT FH1100  CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 54, 592
        TIME - 1730                    N750FH              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 99 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          BEAVERTON,OREG              BEAVERTON,OREG
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - COMPRESSOR ASSEMBLY: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        REMARKS- PLASTIC COATING ON 5TH STAGE COMPRESSOR SECTION BROKE LOOSE FAILED 6TH STAGE BLADES AND STATORS.
```

## Aircraft

- Registration: [N750FH](https://openairdocs.org/deregistered/N750FH-2013-02-21), registration cancelled 2013-02-21, S/N 50, built 1967 (OpenAirDocs)
- Reported make and model: HILLER ACFT FH1100
- Registry model: [Fairchild Hiller FH-1100](https://openairdocs.org/model/fairchild-hiller-fh-1100) (registry code 3376502) (OpenAirDocs)
- Registry engine: [Allison 250 SER 317HP](https://openairdocs.org/engine/allison-250-ser-317hp) (registry code 03011, turbo-shaft) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: 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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