Narrative:

Simultaneous lndgs, at perpendicular runways at the same time. I was descending rapidly in the pattern after dropping skydivers. I reported same on unicom in downwind base and final. Other aircraft reported downwind to perpendicular runway and we spoke about our position. As I turned base to final, I visually located 2ND aircraft at my 12 O'clock position and began to widen my turn to the left (my left) and I called to him my position at 2 O'clock position relative to his aircraft as I turned behind him to avoid a potential midair collision. He did not appear to alter his flight path from his downwind heading. His flight appeared to be a training flight. He sounded like the CFI. I reacted according to what appeared. He did not have me in sight and he never reported such. My base leg was into the early evening sunlight. The weekend boogie had a current NOTAM on file for intense skydiving activity for the weekend at byron (C83) airport. The gentleman verbalized sarcasm and insinuated threats towards me on unicom frequency. I will continue to talk, listen and look out my windshield as much as possible. I will continue to be a courteous pilot whenever possible, in spite of what would seem to others, unusual flight attitudes in relation to climbing and descending aircraft for skydiving operations.

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Original NASA ASRS Text

Title: NMAC BTWN A SKYDIVER SHORTS SKY VAN AND A TRAINING C150 IN THE TFC PATTERNS FOR 2 INTERSECTING RWYS AT BYRON, C-83, CA.

Narrative: SIMULTANEOUS LNDGS, AT PERPENDICULAR RWYS AT THE SAME TIME. I WAS DSNDING RAPIDLY IN THE PATTERN AFTER DROPPING SKYDIVERS. I RPTED SAME ON UNICOM IN DOWNWIND BASE AND FINAL. OTHER ACFT RPTED DOWNWIND TO PERPENDICULAR RWY AND WE SPOKE ABOUT OUR POS. AS I TURNED BASE TO FINAL, I VISUALLY LOCATED 2ND ACFT AT MY 12 O'CLOCK POS AND BEGAN TO WIDEN MY TURN TO THE L (MY L) AND I CALLED TO HIM MY POS AT 2 O'CLOCK POS RELATIVE TO HIS ACFT AS I TURNED BEHIND HIM TO AVOID A POTENTIAL MIDAIR COLLISION. HE DID NOT APPEAR TO ALTER HIS FLT PATH FROM HIS DOWNWIND HEADING. HIS FLT APPEARED TO BE A TRAINING FLT. HE SOUNDED LIKE THE CFI. I REACTED ACCORDING TO WHAT APPEARED. HE DID NOT HAVE ME IN SIGHT AND HE NEVER RPTED SUCH. MY BASE LEG WAS INTO THE EARLY EVENING SUNLIGHT. THE WEEKEND BOOGIE HAD A CURRENT NOTAM ON FILE FOR INTENSE SKYDIVING ACTIVITY FOR THE WEEKEND AT BYRON (C83) ARPT. THE GENTLEMAN VERBALIZED SARCASM AND INSINUATED THREATS TOWARDS ME ON UNICOM FREQ. I WILL CONTINUE TO TALK, LISTEN AND LOOK OUT MY WINDSHIELD AS MUCH AS POSSIBLE. I WILL CONTINUE TO BE A COURTEOUS PLT WHENEVER POSSIBLE, IN SPITE OF WHAT WOULD SEEM TO OTHERS, UNUSUAL FLT ATTITUDES IN RELATION TO CLBING AND DSNDING ACFT FOR SKYDIVING OPS.

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.