Flight crew has a TCAS RA on approach to tjsj; pr.

Attributes
ACN	789346
Time
Date	200805
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : sju.airport
State Reference	PR
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sju.tracon
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	arrival : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : sju.tracon
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	789346
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	789913
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : took precautionary avoidance action
Miss Distance	horizontal : 0 vertical : 400
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

During approach into san juan we were being vectored for landing. ATC called out a TA for traffic descending at our 12 O'clock position and we responded with a negative contact. The ATC controller asked the other traffic if they had us in sight and they responded that they were IMC. Then we received an RA with a monitor vertical speed; do not descend. Next the controller from what we remember responded with an immediate left turn to avoid traffic. The traffic passed under us at approximately 400-500 ft. Then we were clear of conflict and after complying with the RA and ATC instruction we were vectored for landing and were asked if we received an RA which we responded with an affirmative.

Original NASA ASRS Text

Title: FLT CREW HAS A TCAS RA ON APCH TO TJSJ; PR.

Narrative: DURING APCH INTO SAN JUAN WE WERE BEING VECTORED FOR LNDG. ATC CALLED OUT A TA FOR TFC DSNDING AT OUR 12 O'CLOCK POS AND WE RESPONDED WITH A NEGATIVE CONTACT. THE ATC CTLR ASKED THE OTHER TFC IF THEY HAD US IN SIGHT AND THEY RESPONDED THAT THEY WERE IMC. THEN WE RECEIVED AN RA WITH A MONITOR VERT SPD; DO NOT DSND. NEXT THE CTLR FROM WHAT WE REMEMBER RESPONDED WITH AN IMMEDIATE L TURN TO AVOID TFC. THE TFC PASSED UNDER US AT APPROX 400-500 FT. THEN WE WERE CLR OF CONFLICT AND AFTER COMPLYING WITH THE RA AND ATC INSTRUCTION WE WERE VECTORED FOR LNDG AND WERE ASKED IF WE RECEIVED AN RA WHICH WE RESPONDED WITH AN AFFIRMATIVE.

Data retrieved from NASA's ASRS site as of May 2009 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.