# NTSB SEA79FYM08: Hiller Acft Soloy, N172ET, Lacomb, OR, December 22, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 22, 1978
- Place: Lacomb, OR · LACOMB, OR
- Location: 44.5844° N, 122.7417° W: Placed by OpenAirDocs: center of Lacomb, OR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.5844&lon=-122.7417&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 26, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 138556
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA79FYM08
- Page: https://openairdocs.org/ntsb/SEA79FYM08

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4115  78/12/22   LACOMB,OR           HILLER ACFT SOLOY   CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 30, 1802
        TIME - 1115                    N172ET              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 33 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          LACOMB,OR                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            IN FLIGHT: EN ROUTE TO TREAT CROP
           COLLIDED WITH: TREES                                     LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE INDICATING EQUIPMENT: TACHOMETER
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
           PILOT IN COMMAND - SPONTANEOUS-IMPROPER ACTION
           MISCELLANEOUS ACTS,CONDITIONS - INSTRUMENTS-MISREAD OR FAILED TO READ
        FACTOR(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           TERRAIN - HIGH OBSTRUCTIONS
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 1500                       KIND OF OPERATION - FERTILIZING (DUST)
          KIND OF CROP - FOREST-TREES                              TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - SLING LOADED                      TERRAIN-TYPE -MOUNTAINOUS
          ELEVATION-AREA BEING TREATED-FEET -  800
        REMARKS- TACH GENERATOR FAILED.PLT RECD ERRONEOUS ENG OUT WARNINGS. SERVICE BULLETIN SOLOY 03-560 NCW.
```

## Aircraft

- Registration: [N172ET](https://openairdocs.org/deregistered/N172ET-2004-08-18), registration cancelled 2004-08-18, S/N HA3072, built 1978 (OpenAirDocs)
- Reported make and model: HILLER ACFT SOLOY
- Registry model: [Hiller UH-12E](https://openairdocs.org/model/hiller-uh-12e) (registry code 4360122) (OpenAirDocs)
- Registry engine: [Lycoming VO-540 series](https://openairdocs.org/engine/lycoming-vo-540-series) (registry code 41534, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: Substantial damage

## 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 19781222041829A](https://openairdocs.org/incident/19781222041829A), Dec 22, 1978: Hiller UH12C, Lacomb, OR, Substantial damage. Tach generator failed. Plt recd erroneous eng out warnings. Serviclletin soloy 03-560 ncw.

## Other investigations on N172ET (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 LAX95LA132](https://openairdocs.org/ntsb/LAX95LA132), Mar 12, 1995: Hiller UH-12E (N172ET), Five Points, CA, substantial damage. Probable cause: fuel exhaustion due to the pilot's inattention to the fuel supply.
- [NTSB LAX86DVA09](https://openairdocs.org/ntsb/LAX86DVA09), Jun 17, 1986: Hiller UH-12E (N172ET), Delano, CA, 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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