# NTSB SEA74DYI10: Hiller Acft UH-12E, N90469, London, OR, March 24, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 24, 1974
- Place: London, OR · LONDON, OR
- Location: 43.6346° N, 123.0929° W: Placed by OpenAirDocs: center of London, OR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.6346&lon=-123.0929&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report April 25, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 186414
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA74DYI10
- Page: https://openairdocs.org/ntsb/SEA74DYI10

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0755  74/3/24    LONDON,OREG         HILLER ACFT UH-12E  CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 30, 2700
        TIME - 0822                    N90469              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 650 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          LONDON,OREG                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  LANDING: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
           PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS
        FACTOR(S)
           PILOT IN COMMAND - SPONTANEOUS-IMPROPER ACTION
           TERRAIN - ROUGH/UNEVEN
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - UNKNOWN/NOT REPORTED       KIND OF OPERATION - SPRAYING FORESTS
          KIND OF CROP - FOREST-TREES                              TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - SIDES                             TERRAIN-TYPE -MOUNTAINOUS
          ELEVATION-AREA BEING TREATED-FEET -  1600                SWATH RUN-HOW FLOWN - WIND CALM
        REMARKS- PLT THOUGHT HE HAD PWR LOSS,STARTED AUTOROTATION.UN MAINTAIN ROTOR RPM.LND IN STUMPS.
```

## 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: 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 19740324006469A](https://openairdocs.org/incident/19740324006469A), Mar 24, 1974: Hiller UH12E, London, OR, Substantial damage. Plt thought he had pwr loss,started autorotation. Un maintain rotor RPM.lnd in stumps.

## 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 SEA75DYE41](https://openairdocs.org/ntsb/SEA75DYE41), May 5, 1975: Hiller Acft UH-12E (N90469), Concrete, WA, destroyed

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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