Air carrier performs evasive climb as TCASII gives RA.

Attributes
ACN	202802
Time
Date	199203
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : pgy airport : san
State Reference	CA
Altitude	msl bound lower : 5800 msl bound upper : 6500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : san tower : tpa
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	approach : visual enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : intermediate altitude
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 22500 flight time type : 4500
ASRS Report	202802
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time total : 5000
ASRS Report	203329
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance non adherence : far other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 3000 vertical : 400
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Flight inbound to san. While descending to 6000 ft inbound to pgy VOR, at approximately 6200 ft we received a TCASII TA followed by a TCASII warning. TCASII displayed a 1500- 2000 FPM climb required with approximately 6-8 targets on screen and traffic at 12 O'clock very close. During the pull up to about 6500 ft, we sighted a single engine aircraft at 2-2:30 O'clock and about 1/2 mi distance. TCASII displayed him to be at 5800 ft and climbing. We believed that approach control issued the traffic during our pull up. We advised approach control that we had to do an avoidance maneuver on the issued traffic. The remainder of the flight operated normally to san. Supplemental information from acn 203329: total elapsed time was about 5 seconds. Numerous targets were indicated on the TCASII screen. The system seemed to perform well. An uneventful visual approach to runway 9 was performed.

Original NASA ASRS Text

Title: ACR PERFORMS EVASIVE CLB AS TCASII GIVES RA.

Narrative: FLT INBOUND TO SAN. WHILE DSNDING TO 6000 FT INBOUND TO PGY VOR, AT APPROX 6200 FT WE RECEIVED A TCASII TA FOLLOWED BY A TCASII WARNING. TCASII DISPLAYED A 1500- 2000 FPM CLB REQUIRED WITH APPROX 6-8 TARGETS ON SCREEN AND TFC AT 12 O'CLOCK VERY CLOSE. DURING THE PULL UP TO ABOUT 6500 FT, WE SIGHTED A SINGLE ENG ACFT AT 2-2:30 O'CLOCK AND ABOUT 1/2 MI DISTANCE. TCASII DISPLAYED HIM TO BE AT 5800 FT AND CLBING. WE BELIEVED THAT APCH CTL ISSUED THE TFC DURING OUR PULL UP. WE ADVISED APCH CTL THAT WE HAD TO DO AN AVOIDANCE MANEUVER ON THE ISSUED TFC. THE REMAINDER OF THE FLT OPERATED NORMALLY TO SAN. SUPPLEMENTAL INFO FROM ACN 203329: TOTAL ELAPSED TIME WAS ABOUT 5 SECONDS. NUMEROUS TARGETS WERE INDICATED ON THE TCASII SCREEN. THE SYS SEEMED TO PERFORM WELL. AN UNEVENTFUL VISUAL APCH TO RWY 9 WAS PERFORMED.

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.