Narrative:

I was instructor pilot of helicopter (hughes 500D) performing an emergency procedure to runway 11, little river airport, ca. We had been using the airport for more than 1 hour, had been in radio contact with the unicom operator and 2 other aircraft on CTAF 122.7. As we were on downwind to runway 11 we noticed a single engine cessna taxi down the parallel taxiway without making a radio call. We continued our base as the cessna taxied to the runway hold line and turn west as if doing a clearing turn. We turned a high final approach (called both base turn and final on CTAF) and proceeded with our simulated emergency (stuck left pedal). We passed 2/3 of the runway about 120 ft above the surface when the cessna underflew us by 75-80 ft resulting in a near miss. The cessna pilot did not announce his intentions of departing. After underflying us the cessna pilot pulled up on a steep departure and continued eastbound. We feel that this was a deliberate departure under us that unnecessarily put 3 people at risk. I confirmed the identify of the aircraft (cessna) and the owner's name and if he had radios in the aircraft. The FBO confirmed the aircraft had radios. If this had been accidental, the cessna could have moved off the centerline either left or right to clear us instead of underflying us. We were about to increase our rate of descent at the time of the near miss. Had the cessna tried this some 8-10 seconds later, you would have heard about this on cnn.

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Original NASA ASRS Text

Title: NMAC.

Narrative: I WAS INSTRUCTOR PLT OF HELI (HUGHES 500D) PERFORMING AN EMER PROC TO RWY 11, LITTLE RIVER ARPT, CA. WE HAD BEEN USING THE ARPT FOR MORE THAN 1 HR, HAD BEEN IN RADIO CONTACT WITH THE UNICOM OPERATOR AND 2 OTHER ACFT ON CTAF 122.7. AS WE WERE ON DOWNWIND TO RWY 11 WE NOTICED A SINGLE ENG CESSNA TAXI DOWN THE PARALLEL TXWY WITHOUT MAKING A RADIO CALL. WE CONTINUED OUR BASE AS THE CESSNA TAXIED TO THE RWY HOLD LINE AND TURN W AS IF DOING A CLRING TURN. WE TURNED A HIGH FINAL APCH (CALLED BOTH BASE TURN AND FINAL ON CTAF) AND PROCEEDED WITH OUR SIMULATED EMER (STUCK L PEDAL). WE PASSED 2/3 OF THE RWY ABOUT 120 FT ABOVE THE SURFACE WHEN THE CESSNA UNDERFLEW US BY 75-80 FT RESULTING IN A NEAR MISS. THE CESSNA PLT DID NOT ANNOUNCE HIS INTENTIONS OF DEPARTING. AFTER UNDERFLYING US THE CESSNA PLT PULLED UP ON A STEEP DEP AND CONTINUED EBOUND. WE FEEL THAT THIS WAS A DELIBERATE DEP UNDER US THAT UNNECESSARILY PUT 3 PEOPLE AT RISK. I CONFIRMED THE IDENT OF THE ACFT (CESSNA) AND THE OWNER'S NAME AND IF HE HAD RADIOS IN THE ACFT. THE FBO CONFIRMED THE ACFT HAD RADIOS. IF THIS HAD BEEN ACCIDENTAL, THE CESSNA COULD HAVE MOVED OFF THE CTRLINE EITHER L OR R TO CLR US INSTEAD OF UNDERFLYING US. WE WERE ABOUT TO INCREASE OUR RATE OF DSCNT AT THE TIME OF THE NEAR MISS. HAD THE CESSNA TRIED THIS SOME 8-10 SECONDS LATER, YOU WOULD HAVE HEARD ABOUT THIS ON CNN.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.