An rj and a DH8 did not have legal separation after the approach controllers did not ensure required...

Attributes
ACN	616567
Time
Date	200405
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : ood.vortac
State Reference	NJ
Altitude	msl single value : 8000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : phl.tracon
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : phl.tracon
Operator	common carrier : air carrier
Make Model Name	Dash 8 Series Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach instruction : trainee
Qualification	controller : developmental
Experience	controller radar : 8 flight attendant time total : 8
ASRS Report	616567
Person 2
Affiliation	government : faa
Function	controller : approach instruction : instructor
Qualification	controller : radar
Experience	controller time certified in position1 : 11
ASRS Report	616565
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation non adherence : far non adherence : published procedure
Independent Detector	atc equipment other atc equipment : radar other controllera other controllerb
Resolutory Action	controller : issued new clearance controller : separated traffic flight crew : took evasive action
Miss Distance	horizontal : 15000 vertical : 300
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Rj wbound at 8000 ft, DH8A sebound 7500 ft, climbing. I turned rj southeast heading 130 degrees, descending to 3000 ft. The other controller turned DH8 southwest heading 240 degrees. No conflict alert, aircraft was no less than 3 mi apart and 1000 ft MSL. Cause: the rj initially accepted a clearance for the visual approach for runway 35, then later said was unable runway 35. This caused me to vector the aircraft in trail with other arrs from over terri inbound to phl. I immediately coordinated holding vcn (cedar lake) VOR and terri arrs with ZDC, which didn't answer the landline. The other controller asked, was I watching the DH8, which I immediately issued traffic and control instructions to turn and descend. Supplemental information from acn 616565: the DH8 departed phl and climbed to 9000 ft on a 240 degree heading. When I turned the DH8 left direct ood, I noticed the crj at 8000 ft heading nwbound towards the DH8. I turned the DH8 right to 240 degrees to avoid the crj.

Original NASA ASRS Text

Title: AN RJ AND A DH8 DID NOT HAVE LEGAL SEPARATION AFTER THE APCH CTLRS DID NOT ENSURE REQUIRED SEPARATION.

Narrative: RJ WBOUND AT 8000 FT, DH8A SEBOUND 7500 FT, CLBING. I TURNED RJ SE HDG 130 DEGS, DSNDING TO 3000 FT. THE OTHER CTLR TURNED DH8 SW HDG 240 DEGS. NO CONFLICT ALERT, ACFT WAS NO LESS THAN 3 MI APART AND 1000 FT MSL. CAUSE: THE RJ INITIALLY ACCEPTED A CLRNC FOR THE VISUAL APCH FOR RWY 35, THEN LATER SAID WAS UNABLE RWY 35. THIS CAUSED ME TO VECTOR THE ACFT IN TRAIL WITH OTHER ARRS FROM OVER TERRI INBOUND TO PHL. I IMMEDIATELY COORDINATED HOLDING VCN (CEDAR LAKE) VOR AND TERRI ARRS WITH ZDC, WHICH DIDN'T ANSWER THE LANDLINE. THE OTHER CTLR ASKED, WAS I WATCHING THE DH8, WHICH I IMMEDIATELY ISSUED TFC AND CTL INSTRUCTIONS TO TURN AND DSND. SUPPLEMENTAL INFO FROM ACN 616565: THE DH8 DEPARTED PHL AND CLBED TO 9000 FT ON A 240 DEG HDG. WHEN I TURNED THE DH8 L DIRECT OOD, I NOTICED THE CRJ AT 8000 FT HDG NWBOUND TOWARDS THE DH8. I TURNED THE DH8 R TO 240 DEGS TO AVOID THE CRJ.

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.

An rj and a DH8 did not have legal separation after the approach controllers did not ensure required separation.