# NTSB SEA76DYG73: Hiller Acft UH-12E, N7411N, Kennewick, WA, August 10, 1976

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: August 10, 1976
- Place: Kennewick, WA · KENNEWICK, WA
- Location: 46.1976° N, 119.1759° W: Placed by OpenAirDocs: center of Kennewick, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=46.1976&lon=-119.1759&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report September 28, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 156189
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA76DYG73
- Page: https://openairdocs.org/ntsb/SEA76DYG73

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3530  76/8/10  NR.KENNEWICK,WA       HILLER ACFT UH-12E  CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE UNK/NR,
        TIME - 1325                    N7411N              PX-  0  0  0  CONSTRUCTION              15000 TOTAL HOURS, 10000
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         KENNEWICK,WA                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: HOVERING
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - FUEL SYSTEM: PUMPS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - FUEL STARVATION
           PILOT IN COMMAND - FAILED TO FOLLOW APPROVED PROCEDURES,DIRECTIVES,ETC.
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- AUX FUEL PUMP NOT USED AT TIME ENG-DRIVEN PUMP FAILED.OP MANUAL STATES PUMP SHOULD HAVE BEEN ON.
```

## Aircraft

- Registration: [N7411N](https://openairdocs.org/deregistered/N7411N-2018-01-08), registration cancelled 2018-01-08, S/N 2110, built 1961 (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 19760810026679A](https://openairdocs.org/incident/19760810026679A), Aug 10, 1976: Hiller UH12E, Kennewick, WA, Substantial damage. Aux fuel pump not used at time eng-driven pump failed. Op manual states pump should have been on.

## Other investigations on N7411N (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 DEN89LA084](https://openairdocs.org/ntsb/DEN89LA084), Mar 9, 1989: Hiller UH-12E (N7411N), Golden, CO, substantial damage. Probable cause: IMPROPER IN-FLIGHT PLANNING/DECISION BY THE CFI WHICH RESULTED IN LOSS OF TAIL ROTOR EFFECTIVENESS AND LOSS OF DIRECTIONAL CONTROL. CONTRIBUTING FACTORS WERE HIGH DENSITY ALTITUDE, TAILWIND, AND…
- [NTSB DEN85IA117](https://openairdocs.org/ntsb/DEN85IA117), Apr 17, 1985: Hiller UH-12E (N7411N), Broomfield, CO, incident, minor 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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