An MD80 flight crew received a TCASII RA during an ARTCC request for rapid descent into san.

Attributes
ACN	436963
Time
Date	199905
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : pgy.vortac
State Reference	CA
Altitude	msl bound lower : 12000 msl bound upper : 13000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zla.artcc
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Flight Phase	cruise : enroute altitude change
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zla.artcc
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	436963
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
ASRS Report	436962
Events
Anomaly	conflict : airborne less severe
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : took precautionary avoidance action
Miss Distance	horizontal : 5000 vertical : 500
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Captain flying aircraft. During ATC cleared descent at approximately 13000 ft, advised by ATC to expedite descent to 11000 ft as cleared. At 12500 ft a target appeared to left of aircraft 1 mi or less. The target was 500 ft below us when a climb RA was initiated by the captain. The climb continued till clear of conflict. ATC was advised controller said thanks.

Original NASA ASRS Text

Title: AN MD80 FLC RECEIVED A TCASII RA DURING AN ARTCC REQUEST FOR RAPID DSCNT INTO SAN.

Narrative: CAPT FLYING ACFT. DURING ATC CLRED DSCNT AT APPROX 13000 FT, ADVISED BY ATC TO EXPEDITE DSCNT TO 11000 FT AS CLRED. AT 12500 FT A TARGET APPEARED TO L OF ACFT 1 MI OR LESS. THE TARGET WAS 500 FT BELOW US WHEN A CLB RA WAS INITIATED BY THE CAPT. THE CLB CONTINUED TILL CLR OF CONFLICT. ATC WAS ADVISED CTLR SAID THANKS.

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.