Narrative:

While on an IFR flight to N80 and just cleared for a visual approach by pxt (navy) approach, I contacted unicom for an airport advisory approximately 10 NM (LORAN) from destination airport (N80) and was advised that the favored runway was '20.' at the time, the only traffic was on the surface, taxiing out to the active runway. I advised the airport of my intentions (to land- runway 20) at this time. Position reports were made at 5 NM, entering a left downwind. Downwind, left base leg and on final approach for runway 20. Every transmission began and ended with the airport name. While on the downwind leg, 1 of the aircraft on the ground broadcasted his intentions to depart on runway 20. As I proceeded to turn base to final, I noticed the second aircraft on the ground taxi up to the hold line for runway 20. I broadcast my report and intention of landing on runway 20. I continued a normal approach in the landing confign. At about 200 ft AGL, and about 1/4 NM from the approach end of the runway, another small aircraft, the one that was holding at the runway, taxied onto the active runway without any transmission and proceeded to takeoff. Since there were not radio xmissions from this aircraft, since I was in the traffic pattern, I made another transmission while on short final, but it was at this time (approximately) that the said aircraft decided he would takeoff. This event resulted in me having to do some slow speed maneuvering at a low altitude. I could not execute a normal go around and keep this aircraft in sight. My only choice was to do a 360 degree turn and re- enter a final approach leg to the runway since there was no other traffic. The maneuvering called for was a low slow 360 degree turn (full flaps and power at low altitude).

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Original NASA ASRS Text

Title: SMA ON FINAL APCH NON TWR ARPT HAS SMA TAXI ONTO RWY AND TKOF. FLT AVOIDANCE WITH LOW ALT MANEUVERING.

Narrative: WHILE ON AN IFR FLT TO N80 AND JUST CLRED FOR A VISUAL APCH BY PXT (NAVY) APCH, I CONTACTED UNICOM FOR AN ARPT ADVISORY APPROX 10 NM (LORAN) FROM DEST ARPT (N80) AND WAS ADVISED THAT THE FAVORED RWY WAS '20.' AT THE TIME, THE ONLY TFC WAS ON THE SURFACE, TAXIING OUT TO THE ACTIVE RWY. I ADVISED THE ARPT OF MY INTENTIONS (TO LAND- RWY 20) AT THIS TIME. POS RPTS WERE MADE AT 5 NM, ENTERING A L DOWNWIND. DOWNWIND, L BASE LEG AND ON FINAL APCH FOR RWY 20. EVERY XMISSION BEGAN AND ENDED WITH THE ARPT NAME. WHILE ON THE DOWNWIND LEG, 1 OF THE ACFT ON THE GND BROADCASTED HIS INTENTIONS TO DEPART ON RWY 20. AS I PROCEEDED TO TURN BASE TO FINAL, I NOTICED THE SECOND ACFT ON THE GND TAXI UP TO THE HOLD LINE FOR RWY 20. I BROADCAST MY RPT AND INTENTION OF LNDG ON RWY 20. I CONTINUED A NORMAL APCH IN THE LNDG CONFIGN. AT ABOUT 200 FT AGL, AND ABOUT 1/4 NM FROM THE APCH END OF THE RWY, ANOTHER SMA, THE ONE THAT WAS HOLDING AT THE RWY, TAXIED ONTO THE ACTIVE RWY WITHOUT ANY XMISSION AND PROCEEDED TO TKOF. SINCE THERE WERE NOT RADIO XMISSIONS FROM THIS ACFT, SINCE I WAS IN THE TFC PATTERN, I MADE ANOTHER XMISSION WHILE ON SHORT FINAL, BUT IT WAS AT THIS TIME (APPROX) THAT THE SAID ACFT DECIDED HE WOULD TKOF. THIS EVENT RESULTED IN ME HAVING TO DO SOME SLOW SPD MANEUVERING AT A LOW ALT. I COULD NOT EXECUTE A NORMAL GAR AND KEEP THIS ACFT IN SIGHT. MY ONLY CHOICE WAS TO DO A 360 DEG TURN AND RE- ENTER A FINAL APCH LEG TO THE RWY SINCE THERE WAS NO OTHER TFC. THE MANEUVERING CALLED FOR WAS A LOW SLOW 360 DEG TURN (FULL FLAPS AND PWR AT LOW ALT).

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.