B737 experiences TCASII TA-RA with unrpted traffic.

Attributes
ACN	629379
Time
Date	200409
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : pbi.airport
State Reference	FL
Altitude	msl single value : 17500
Environment
Flight Conditions	Mixed
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zma.artcc
Operator	common carrier : air carrier
Make Model Name	B737-400
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Route In Use	departure : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	controller : radar pilot : commercial pilot : atp pilot : instrument pilot : multi engine
Experience	controller military : 9 controller non radar : 2 controller radar : 10 controller supervisory : 2 flight time last 90 days : 150 flight time total : 12600 flight time type : 8000
ASRS Report	629379
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	conflict : airborne critical
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 500 vertical : 400
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Unknown aircraft, probably skirting the traffic back up around pbi. Came in at a high speed apparently VFR. We pushed the aircraft over at 17500 ft because of TA/RA alert. Had we not turned hard left 50 degrees the target would have hit us. Had it not been for the TCASII we would have or he would have impacted with us!

Original NASA ASRS Text

Title: B737 EXPERIENCES TCASII TA-RA WITH UNRPTED TFC.

Narrative: UNKNOWN ACFT, PROBABLY SKIRTING THE TFC BACK UP AROUND PBI. CAME IN AT A HIGH SPD APPARENTLY VFR. WE PUSHED THE ACFT OVER AT 17500 FT BECAUSE OF TA/RA ALERT. HAD WE NOT TURNED HARD L 50 DEGS THE TARGET WOULD HAVE HIT US. HAD IT NOT BEEN FOR THE TCASII WE WOULD HAVE OR HE WOULD HAVE IMPACTED WITH US!

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.