Nct controller described conflict event when sfo tower departed a porte and quiet departure without ...

Narrative:

During mid operations at nct I was working the sutro sector; which had all the departure sectors combined. I was working with a coordinator for the departures between sfo and oak. Sfo tower had automatic releases and oak tower was on call for releases. Sfo tower departed a porte 3 and a quiet departure simultaneously. At the time the two aircraft were airborne I was working approximately twelve to fifteen aircraft. Complexity was high and traffic volume was high. My coordinator and myself notice the conflict almost at the same time and I proceeded to turn the air carrier Y southbound and issued traffic. The air carrier Y turned really good and climbed really good; the aircraft was below the quiet departure and in the following two updates it was above the conflicting aircraft. At one point I believed the aircraft were at least two miles laterally and at the same altitude. This is not the first time that sfo has done this; they have done it a numerous time in the past and this is something that worries me since I have never had two aircraft this close to each other. I believe that a solution to the problem would be to stop the quiet departure when there are porte departures in the mix.

Original NASA ASRS Text

Title: NCT Controller described conflict event when SFO Tower departed a Porte and Quiet departure without proper separation requiring an immediate action on the part of the Departure Controller.

Narrative: During mid operations at NCT I was working the Sutro sector; which had all the departure sectors combined. I was working with a Coordinator for the departures between SFO and OAK. SFO Tower had automatic releases and OAK Tower was on call for releases. SFO Tower departed a Porte 3 and a Quiet departure simultaneously. At the time the two aircraft were airborne I was working approximately twelve to fifteen aircraft. Complexity was high and traffic volume was high. My Coordinator and myself notice the conflict almost at the same time and I proceeded to turn the Air Carrier Y southbound and issued traffic. The Air Carrier Y turned really good and climbed really good; the aircraft was below the Quiet departure and in the following two updates it was above the conflicting aircraft. At one point I believed the aircraft were at least two miles laterally and at the same altitude. This is not the first time that SFO has done this; they have done it a numerous time in the past and this is something that worries me since I have never had two aircraft this close to each other. I believe that a solution to the problem would be to stop the Quiet departure when there are Porte departures in the mix.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	865932
Time
Date	200912
Local Time Of Day	0601-1200
Place
Locale Reference	SFO.Airport
State Reference	CA
Aircraft 1
Make Model Name	A319
Flight Phase	Initial Climb
Flight Plan	IFR
Person 1
Function	Departure
Qualification	Air Traffic Control Fully Certified
Person 2
Function	Coordinator
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy
Miss Distance	Horizontal 3704 Vertical 0

Nct controller described conflict event when sfo tower departed a porte and quiet departure without proper separation requiring an immediate action on the part of the departure controller.