Narrative:

I was returning to 65LA (southern sea plane) for landing. I made a radio call to the tower stating my position as 7 mi north and inbound for landing at 65LA. The controller cleared my plane, small aircraft, direct to 65LA. Traffic was called out as small transport in the pattern for runway 4 at navy and 1000 ft. I began my descent from 1500 ft to pattern altitude of 500 ft (65LA) and began looking for traffic. The wind was 120 at 10 KTS almost a direct crosswind and I decided to land to the south (runway 20+/-). This would give me a chance to cross over the field and check wind sock and float plane movement next to runway. I never saw the small transport in the pattern. As I approached the field still north of it, my attention was toward 65LA, now down to 600+/- and almost into traffic pattern. I was looking at the movement of planes on the airport (flat planes must cross runway to reach hangars and fuel). When a call came from the small transport in navy pattern stating that upon takeoff and turn out (which turn I don't know) he saw an small aircraft in the pattern (his pattern) and at pattern altitude. He asked for any reported traffic. The tower stated none reported. Then tower inquired about the small aircraft at 65LA. Being my aircraft I replied and stated I was just then turning into downwind for landing to the south. He advised me pattern altitude was 500 ft and I replied that I was not at 500 ft. The pilot of the small transport was quite shaken by the situation. I was shaken up by the radio calls, though I never saw the small transport at any time. I feel that the overlapping patterns caused the small transport the feeling of threat he experienced. He must have been climbing on crosswind when I was descending on a crosswind. Tower should have warned of other inbound traffic (small aircraft) and perhaps updated the small transport's position in pattern. Thus, the small transport would not have been surprised and shaken up.

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Original NASA ASRS Text

Title: CLOSE PROX GA SMA ENTERING PATTERN AT NON TWR ARPT AND SMT IN TFC PATTERN AT ADJACENT ARPT.

Narrative: I WAS RETURNING TO 65LA (SOUTHERN SEA PLANE) FOR LNDG. I MADE A RADIO CALL TO THE TWR STATING MY POS AS 7 MI N AND INBOUND FOR LNDG AT 65LA. THE CTLR CLRED MY PLANE, SMA, DIRECT TO 65LA. TFC WAS CALLED OUT AS SMT IN THE PATTERN FOR RWY 4 AT NAVY AND 1000 FT. I BEGAN MY DSCNT FROM 1500 FT TO PATTERN ALT OF 500 FT (65LA) AND BEGAN LOOKING FOR TFC. THE WIND WAS 120 AT 10 KTS ALMOST A DIRECT XWIND AND I DECIDED TO LAND TO THE S (RWY 20+/-). THIS WOULD GIVE ME A CHANCE TO CROSS OVER THE FIELD AND CHK WIND SOCK AND FLOAT PLANE MOVEMENT NEXT TO RWY. I NEVER SAW THE SMT IN THE PATTERN. AS I APCHED THE FIELD STILL N OF IT, MY ATTN WAS TOWARD 65LA, NOW DOWN TO 600+/- AND ALMOST INTO TFC PATTERN. I WAS LOOKING AT THE MOVEMENT OF PLANES ON THE ARPT (FLAT PLANES MUST CROSS RWY TO REACH HANGARS AND FUEL). WHEN A CALL CAME FROM THE SMT IN NAVY PATTERN STATING THAT UPON TKOF AND TURN OUT (WHICH TURN I DON'T KNOW) HE SAW AN SMA IN THE PATTERN (HIS PATTERN) AND AT PATTERN ALT. HE ASKED FOR ANY RPTED TFC. THE TWR STATED NONE RPTED. THEN TWR INQUIRED ABOUT THE SMA AT 65LA. BEING MY ACFT I REPLIED AND STATED I WAS JUST THEN TURNING INTO DOWNWIND FOR LNDG TO THE S. HE ADVISED ME PATTERN ALT WAS 500 FT AND I REPLIED THAT I WAS NOT AT 500 FT. THE PLT OF THE SMT WAS QUITE SHAKEN BY THE SITUATION. I WAS SHAKEN UP BY THE RADIO CALLS, THOUGH I NEVER SAW THE SMT AT ANY TIME. I FEEL THAT THE OVERLAPPING PATTERNS CAUSED THE SMT THE FEELING OF THREAT HE EXPERIENCED. HE MUST HAVE BEEN CLBING ON XWIND WHEN I WAS DSNDING ON A XWIND. TWR SHOULD HAVE WARNED OF OTHER INBOUND TFC (SMA) AND PERHAPS UPDATED THE SMT'S POS IN PATTERN. THUS, THE SMT WOULD NOT HAVE BEEN SURPRISED AND SHAKEN UP.

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.