Phl approach controller experienced operational error during arrival vector procedures.

Attributes
ACN	625588
Time
Date	200407
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : phl.airport
State Reference	PA
Altitude	msl single value : 3200
Environment
Weather Elements	other
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : phl.tracon
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	arrival : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : phl.tracon
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach instruction : instructor
Qualification	controller : radar
Experience	controller military : 3 controller radar : 16 controller time certified in position1 : 8
ASRS Report	625588
Person 2
Affiliation	government : faa
Function	controller : approach instruction : trainee
Qualification	controller : developmental
Experience	controller military : 4
ASRS Report	625729
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	atc equipment : conflict alert aircraft equipment : tcas other controllera
Resolutory Action	controller : issued alert flight crew : took evasive action
Consequence	faa : investigated
Miss Distance	horizontal : 12000 vertical : 600
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

2 aircraft on vectors to airport under my control resulted in an RA and loss of separation.

Original NASA ASRS Text

Title: PHL APCH CTLR EXPERIENCED OPERROR DURING ARR VECTOR PROCS.

Narrative: 2 ACFT ON VECTORS TO ARPT UNDER MY CTL RESULTED IN AN RA AND LOSS OF SEPARATION.

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.