# NTSB DEN75AD006: Hiller Acft FH1100, N8673, Pinedale, WY, August 28, 1974

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: August 28, 1974
- Place: Pinedale, WY · PINEDALE, WY
- Location: 42.8676° N, 109.8705° W: Placed by OpenAirDocs: center of Pinedale, WY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.8676&lon=-109.8705&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 2 uninjured
- Status: Completed, report October 2, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 134369
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN75AD006
- Page: https://openairdocs.org/ntsb/DEN75AD006

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2582  74/8/28    PINEDALE,WYO        HILLER ACFT FH1100  CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 38, 3443
        TIME - 0548                    N8673               PX-  0  0  2  AIR TAXI-PASSG            TOTAL HOURS, 792 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - RALPH WENZ
        DEPARTURE POINT             INTENDED DESTINATION
          PINEDALE,WYO                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: UNCONTROLLED                TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: CYCLIC PITCH CONTROL SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY SECURED
        REMARKS- MAINT PERS FAILED TO SAFTY WIRE LOCK NUT ON CYCLIC FORE-AFT ACTUATOR.ACFT UNCONTROLLABLE ON TKOF.
```

## Aircraft

- Registration: [N8673](https://openairdocs.org/deregistered/N8673-1993-05-05), registration cancelled 1993-05-05, S/N 88 (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)
- Category: Helicopter
- Engines: turbo shaft
- Damage: Substantial damage
- Airport: Ralph Wenz

## 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 19740828029609A](https://openairdocs.org/incident/19740828029609A), Aug 28, 1974: Frchld FH1100, Pinedale, WY, Substantial damage. Maint pers failed to safty wire lock nut on cyclic fore-aft actuator. Acft uncontrollable on tkof.

## Other investigations on N8673 (1)

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 MKC72AKO02](https://openairdocs.org/ntsb/MKC72AKO02), Jul 3, 1971: Hiller FH1100 (N8673), Mound City, MO, substantial damage, 1 fatal

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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