Air carrier Y climb to occupied altitude had less than standard separation from small aircraft X. Sy...

Attributes
ACN	219319
Time
Date	199208
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : oak
State Reference	CA
Altitude	msl bound lower : 11000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : direct enroute airway : zoa
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : developmental controller : radar
Experience	controller non radar : 2 controller radar : 1
ASRS Report	219319
Person 2
Affiliation	government : faa
Function	controller : flight data
Qualification	controller : non radar
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	horizontal : 28800 vertical : 700
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Intra Facility Coordination Failure Operational Error

Narrative:

Small aircraft X departs sfo requesting FL110. Air carrier Y departs shortly after requesting 170. I observed small aircraft X level at 9000 for several mi and d-side, who had coordinated with travis approach and released small aircraft X for climb, then tells me travis approach is working small aircraft X. Thinking small aircraft X is now staying within travis airspace, I consider the problem solved. My concern prior to this was, of course, the air carrier Y 90 KTS faster with both aircraft climbing to 110. We both observed small aircraft X leaving 106, and d-side called travis approach to tell them to descend small aircraft X back to 10000. This was after she had asked me if the air carrier Y was on my frequency, and then called bay approach to see if they were still watching the small aircraft X. They weren't, so the call to travis was made. Air carrier Y checked on my frequency, I immediately climbed the aircraft expeditiously to 13000 and quoted the traffic.

Original NASA ASRS Text

Title: ACR Y CLB TO OCCUPIED ALT HAD LTSS FROM SMA X. SYS ERROR.

Narrative: SMA X DEPARTS SFO REQUESTING FL110. ACR Y DEPARTS SHORTLY AFTER REQUESTING 170. I OBSERVED SMA X LEVEL AT 9000 FOR SEVERAL MI AND D-SIDE, WHO HAD COORDINATED WITH TRAVIS APCH AND RELEASED SMA X FOR CLB, THEN TELLS ME TRAVIS APCH IS WORKING SMA X. THINKING SMA X IS NOW STAYING WITHIN TRAVIS AIRSPACE, I CONSIDER THE PROBLEM SOLVED. MY CONCERN PRIOR TO THIS WAS, OF COURSE, THE ACR Y 90 KTS FASTER WITH BOTH ACFT CLBING TO 110. WE BOTH OBSERVED SMA X LEAVING 106, AND D-SIDE CALLED TRAVIS APCH TO TELL THEM TO DSND SMA X BACK TO 10000. THIS WAS AFTER SHE HAD ASKED ME IF THE ACR Y WAS ON MY FREQ, AND THEN CALLED BAY APCH TO SEE IF THEY WERE STILL WATCHING THE SMA X. THEY WEREN'T, SO THE CALL TO TRAVIS WAS MADE. ACR Y CHKED ON MY FREQ, I IMMEDIATELY CLBED THE ACFT EXPEDITIOUSLY TO 13000 AND QUOTED THE TFC.

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.

Air carrier Y climb to occupied altitude had less than standard separation from small aircraft X. System error.