Cle controller experienced operational error at 3000 ft when localizer intercept clearance was not i...

Attributes
ACN	669586
Time
Date	200508
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : bkl.vor
State Reference	OH
Altitude	msl single value : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : cle.tracon
Operator	general aviation : personal
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : cle.tracon
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
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : non radar
Experience	controller radar : 6 controller time certified in position1 : 6
ASRS Report	669586
Person 2
Affiliation	government : faa
Function	controller : approach
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : took evasive action
Miss Distance	horizontal : 15000 vertical : 300
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

I was working the satellite position and arrival west gave me a bkl inbound at 3000 ft on a downwind which also parallels the arrival at cle. Arrival west had traffic descending into cle on a 270 degree heading just abeam bkl. After a controller swap; new briefing; the controller assumed the 270 degree heading was instructed to join the localizer but he wasn't; so the pilot flew through the localizer towards my 3000 ft traffic. A turn was given to the cle inbound back towards the localizer and away from my aircraft.

Original NASA ASRS Text

Title: CLE CTLR EXPERIENCED OPERROR AT 3000 FT WHEN LOC INTERCEPT CLRNC WAS NOT ISSUED AS EXPECTED.

Narrative: I WAS WORKING THE SATELLITE POS AND ARR W GAVE ME A BKL INBOUND AT 3000 FT ON A DOWNWIND WHICH ALSO PARALLELS THE ARR AT CLE. ARR W HAD TFC DSNDING INTO CLE ON A 270 DEG HDG JUST ABEAM BKL. AFTER A CTLR SWAP; NEW BRIEFING; THE CTLR ASSUMED THE 270 DEG HDG WAS INSTRUCTED TO JOIN THE LOC BUT HE WASN'T; SO THE PLT FLEW THROUGH THE LOC TOWARDS MY 3000 FT TFC. A TURN WAS GIVEN TO THE CLE INBOUND BACK TOWARDS THE LOC AND AWAY FROM MY ACFT.

Data retrieved from NASA's ASRS site as of January 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.

Cle controller experienced operational error at 3000 ft when localizer intercept clearance was not issued as expected.