A TCASII TA and RA are used to resolve near midair collision in socal airspace. No ATC TA given.

Attributes
ACN	481084
Time
Date	200007
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ral.airport
State Reference	CA
Altitude	msl single value : 14000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sct.tracon tracon : n90.tracon
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : sct.tracon
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : instrument pilot : multi engine pilot : flight engineer
Experience	flight time last 90 days : 100 flight time total : 6500 flight time type : 1000
ASRS Report	481084
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne critical conflict : nmac
Independent Detector	aircraft equipment : tcas
Resolutory Action	flight crew : took evasive action other
Miss Distance	horizontal : 0 vertical : 100
Supplementary
Problem Areas	Airspace Structure ATC Human Performance Flight Crew Human Performance
Primary Problem	Airspace Structure

Narrative:

Clearance at 14000 ft to slow to 210 KTS and descend to 10000 ft. While slowing at 14000 ft, TCASII target appeared at 12 O'clock position 400 ft below, closing head on. No advisories from socal were given. This target was VFR. As target approached TCASII gave a preventative advisory to not descend. I noted the target at 300 ft below us now at the 11:30-12 O'clock position. This was followed by a climb resolution. As the climb was established, I noted -100 ft on the target, passing just left of our nose. The TCASII gave the reduce climb advisory then with a final altitude deviation of 400 ft leveling at 14400 ft. I call ATC of the TCASII resolution and altitude deviation. We slowed and descended to 10000 ft MSL.

Original NASA ASRS Text

Title: A TCASII TA AND RA ARE USED TO RESOLVE NMAC IN SOCAL AIRSPACE. NO ATC TA GIVEN.

Narrative: CLRNC AT 14000 FT TO SLOW TO 210 KTS AND DSND TO 10000 FT. WHILE SLOWING AT 14000 FT, TCASII TARGET APPEARED AT 12 O'CLOCK POS 400 FT BELOW, CLOSING HEAD ON. NO ADVISORIES FROM SOCAL WERE GIVEN. THIS TARGET WAS VFR. AS TARGET APCHED TCASII GAVE A PREVENTATIVE ADVISORY TO NOT DSND. I NOTED THE TARGET AT 300 FT BELOW US NOW AT THE 11:30-12 O'CLOCK POS. THIS WAS FOLLOWED BY A CLB RESOLUTION. AS THE CLB WAS ESTABLISHED, I NOTED -100 FT ON THE TARGET, PASSING JUST L OF OUR NOSE. THE TCASII GAVE THE REDUCE CLB ADVISORY THEN WITH A FINAL ALTDEV OF 400 FT LEVELING AT 14400 FT. I CALL ATC OF THE TCASII RESOLUTION AND ALTDEV. WE SLOWED AND DSNDED TO 10000 FT MSL.

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.