Widebody transport on descent for approach has TCASII RA. Climbs but told traffic 1000 ft above.

Attributes
ACN	245537
Time
Date	199306
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sfo
State Reference	CA
Altitude	msl bound lower : 11000 msl bound upper : 11180
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : oak
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : commercial pilot : cfi pilot : atp pilot : instrument
Experience	flight time last 90 days : 230 flight time total : 23000 flight time type : 8000
ASRS Report	245537
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action flight crew : returned to intended course or assigned course
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 1000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

We were at 11000 ft inbound to sfo on vectors. A departing aircraft climbed up directly below us. We got a TA, followed shortly by an RA 'climb, climb.' the copilot advanced power and started a climb (bottom of green arc was 2500 FPM). I immediately advised approach control what we had gotten and what we were doing. He responded by stating to maintain 11000 ft and he had traffic above us at 12000 ft and the traffic below us was to maintain 10000 ft, which he did. (I was on 5 mi range on radar scope and did not show the 12000 ft traffic.) we had climbed to 11180 ft when the copilot corrected and went back to 11000 ft. This could have been prevented by not climbing or descending aircraft immediately on top or below another aircraft when we are in an environment with 1000 ft of separation. This could have developed into a very dangerous situation. (It did not.)

Original NASA ASRS Text

Title: WDB ON DSCNT FOR APCH HAS TCASII RA. CLBS BUT TOLD TFC 1000 FT ABOVE.

Narrative: WE WERE AT 11000 FT INBOUND TO SFO ON VECTORS. A DEPARTING ACFT CLBED UP DIRECTLY BELOW US. WE GOT A TA, FOLLOWED SHORTLY BY AN RA 'CLB, CLB.' THE COPLT ADVANCED PWR AND STARTED A CLB (BOTTOM OF GREEN ARC WAS 2500 FPM). I IMMEDIATELY ADVISED APCH CTL WHAT WE HAD GOTTEN AND WHAT WE WERE DOING. HE RESPONDED BY STATING TO MAINTAIN 11000 FT AND HE HAD TFC ABOVE US AT 12000 FT AND THE TFC BELOW US WAS TO MAINTAIN 10000 FT, WHICH HE DID. (I WAS ON 5 MI RANGE ON RADAR SCOPE AND DID NOT SHOW THE 12000 FT TFC.) WE HAD CLBED TO 11180 FT WHEN THE COPLT CORRECTED AND WENT BACK TO 11000 FT. THIS COULD HAVE BEEN PREVENTED BY NOT CLBING OR DSNDING ACFT IMMEDIATELY ON TOP OR BELOW ANOTHER ACFT WHEN WE ARE IN AN ENVIRONMENT WITH 1000 FT OF SEPARATION. THIS COULD HAVE DEVELOPED INTO A VERY DANGEROUS SIT. (IT DID NOT.)

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.