Narrative:

We announced our intention to land on about a 2 mi base to runway 24. We cleared the area to final with no traffic observed. We turned and announced final about 300 ft AGL. We descended down to about 70 ft to air taxi down the runway. About 1/2 the way down the runway an small aircraft rolled out directly beneath us! We never saw or heard the small aircraft until then. It was apparent to my passenger and I that the small aircraft saw us and continued his final approach as we were over the runway for at least '60 seconds' before we saw the small aircraft.

Google
 

Original NASA ASRS Text

Title: HELI; AIR TAXIING DOWN RWY AFTER 'LANDING' HAS CLOSE ENCOUNTER WITH SMA WHICH LANDED AFTERWARDS AND ROLLED OUT UNDERNEATH THEM.

Narrative: WE ANNOUNCED OUR INTENTION TO LAND ON ABOUT A 2 MI BASE TO RWY 24. WE CLRED THE AREA TO FINAL WITH NO TFC OBSERVED. WE TURNED AND ANNOUNCED FINAL ABOUT 300 FT AGL. WE DSNDED DOWN TO ABOUT 70 FT TO AIR TAXI DOWN THE RWY. ABOUT 1/2 THE WAY DOWN THE RWY AN SMA ROLLED OUT DIRECTLY BENEATH US! WE NEVER SAW OR HEARD THE SMA UNTIL THEN. IT WAS APPARENT TO MY PAX AND I THAT THE SMA SAW US AND CONTINUED HIS FINAL APCH AS WE WERE OVER THE RWY FOR AT LEAST '60 SECONDS' BEFORE WE SAW THE SMA.

Data retrieved from NASA's ASRS site as of January 2009 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.