Narrative:

A cessna 182 full of skydivers was cleared for takeoff on runway 19 by sts tower. Approximately 5 mins later, we were cleared for frees 5 departure. We were cleared to take off on runway 19. We were cleared to 3000 ft. After takeoff, we contacted ZOA. We were in radar contact. Controller cleared us to 4000 ft. We received a TCASII resolution of an aircraft at 12 O'clock position, 400 ft above us. We were at 2600 ft MSL climbing. We received a climb advisory and reacted by turning 45 degrees to left and climbed. If we had not reacted, we would have hit the C182 full of skydivers. Unknown to us and not called out by the controller was a piper seminole. By reacting to our TCASII callouts, we almost hit another aircraft. ZOA did not advise us of this aircraft until they lost radar separation. This aircraft was above us. As we reacted to the first situation, we were receiving callouts to descend. Simultaneously, center was talking to everyone, but did not provide adequate separation between IFR and VFR traffic. Also, why was the C182 flying exactly on the frees 5 departure? This could have been avoided if center would have vectored us south of sts. Traffic controller was overloaded with VFR aircraft.

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Original NASA ASRS Text

Title: BE40 CREW AND A C182 HAD A LESS THAN LEGAL SEPARATION IN ZOA CLASS E AIRSPACE.

Narrative: A CESSNA 182 FULL OF SKYDIVERS WAS CLRED FOR TKOF ON RWY 19 BY STS TWR. APPROX 5 MINS LATER, WE WERE CLRED FOR FREES 5 DEP. WE WERE CLRED TO TAKE OFF ON RWY 19. WE WERE CLRED TO 3000 FT. AFTER TKOF, WE CONTACTED ZOA. WE WERE IN RADAR CONTACT. CTLR CLRED US TO 4000 FT. WE RECEIVED A TCASII RESOLUTION OF AN ACFT AT 12 O'CLOCK POS, 400 FT ABOVE US. WE WERE AT 2600 FT MSL CLBING. WE RECEIVED A CLB ADVISORY AND REACTED BY TURNING 45 DEGS TO L AND CLBED. IF WE HAD NOT REACTED, WE WOULD HAVE HIT THE C182 FULL OF SKYDIVERS. UNKNOWN TO US AND NOT CALLED OUT BY THE CTLR WAS A PIPER SEMINOLE. BY REACTING TO OUR TCASII CALLOUTS, WE ALMOST HIT ANOTHER ACFT. ZOA DID NOT ADVISE US OF THIS ACFT UNTIL THEY LOST RADAR SEPARATION. THIS ACFT WAS ABOVE US. AS WE REACTED TO THE FIRST SIT, WE WERE RECEIVING CALLOUTS TO DSND. SIMULTANEOUSLY, CTR WAS TALKING TO EVERYONE, BUT DID NOT PROVIDE ADEQUATE SEPARATION BTWN IFR AND VFR TFC. ALSO, WHY WAS THE C182 FLYING EXACTLY ON THE FREES 5 DEP? THIS COULD HAVE BEEN AVOIDED IF CTR WOULD HAVE VECTORED US S OF STS. TFC CTLR WAS OVERLOADED WITH VFR ACFT.

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.