Air carrier at 6000 ft on vectors to iwa; with P50 TRACON; experienced TCAS RA with GA aircraft; reporter suggesting ATC limit vectors through GA areas.

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Attributes
ACN	798591
Time
Date	200808
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : phx.airport
State Reference	AZ
Altitude	msl single value : 6000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : p50.tracon
Operator	common carrier : air carrier
Make Model Name	B737-200
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 5150 flight time type : 2400
ASRS Report	798591
Events
Anomaly	conflict : airborne critical
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	controller : issued advisory flight crew : took evasive action
Miss Distance	vertical : 200
Supplementary
Problem Areas	Airspace Structure Flight Crew Human Performance ATC Human Performance
Primary Problem	Ambiguous

Narrative:

We were on a radar vector to phoenix - williams gateway airport (iwa) and talking to phx approach control. Phx approach cleared us to 6000 ft and gave us a heading. That heading and altitude took us through one of local GA practice areas. We saw traffic on TCAS and controller gave us a vector to the right. As we were rolling out on our assigned heading; we picked up another target and ATC also called traffic at 12 O'clock position. That traffic set off an RA for us. In obeying the RA; we descended to 5100 ft and turned 90 degrees to the left from our originally assigned heading to avoid the terrain ahead. Upon conflict resolution; we climbed back up to 6000 ft and got another vector to iwa. ATC should not vector transport category traffic through busy GA practice areas.

Original NASA ASRS Text

Title: ACR AT 6000 FT ON VECTORS TO IWA; WITH P50 TRACON; EXPERIENCED TCAS RA WITH GA ACFT; REPORTER SUGGESTING ATC LIMIT VECTORS THROUGH GA AREAS.

Narrative: WE WERE ON A RADAR VECTOR TO PHOENIX - WILLIAMS GATEWAY ARPT (IWA) AND TALKING TO PHX APCH CTL. PHX APCH CLRED US TO 6000 FT AND GAVE US A HDG. THAT HDG AND ALT TOOK US THROUGH ONE OF LCL GA PRACTICE AREAS. WE SAW TFC ON TCAS AND CTLR GAVE US A VECTOR TO THE R. AS WE WERE ROLLING OUT ON OUR ASSIGNED HDG; WE PICKED UP ANOTHER TARGET AND ATC ALSO CALLED TFC AT 12 O'CLOCK POS. THAT TFC SET OFF AN RA FOR US. IN OBEYING THE RA; WE DSNDED TO 5100 FT AND TURNED 90 DEGS TO THE L FROM OUR ORIGINALLY ASSIGNED HDG TO AVOID THE TERRAIN AHEAD. UPON CONFLICT RESOLUTION; WE CLBED BACK UP TO 6000 FT AND GOT ANOTHER VECTOR TO IWA. ATC SHOULD NOT VECTOR TRANSPORT CATEGORY TFC THROUGH BUSY GA PRACTICE AREAS.

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.