Clt controller expressed concern regarding late sector split to accommodate traffic build up.

Attributes
ACN	625022
Time
Date	200407
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : clt.airport
State Reference	NC
Altitude	msl single value : 5000
Environment
Flight Conditions	Marginal
Light	Night
Aircraft 1
Controlling Facilities	tracon : clt.tracon tower : dfw.tower
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 : clt.tracon
Operator	common carrier : air carrier
Make Model Name	Dash 8 Series Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller non radar : 3 controller radar : 12 flight time total : 105
ASRS Report	625022
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : airborne less severe
Independent Detector	other controllera
Resolutory Action	none taken : insufficient time
Miss Distance	horizontal : 18000 vertical : 600
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

DH8C on localizer for runway 23 was given vector for spacing at 5000 ft. B733 on downwind (050 degrees) was descending to 5000 ft, DH8C turned back to localizer. Traffic called to DH8C and DH8C called traffic in sight at 3 mi. One final open when traffic built up dramatically. Took 5 mins to split finals due to volume. To prevent -- split finals sooner.

Original NASA ASRS Text

Title: CLT CTLR EXPRESSED CONCERN REGARDING LATE SECTOR SPLIT TO ACCOMMODATE TFC BUILD UP.

Narrative: DH8C ON LOC FOR RWY 23 WAS GIVEN VECTOR FOR SPACING AT 5000 FT. B733 ON DOWNWIND (050 DEGS) WAS DSNDING TO 5000 FT, DH8C TURNED BACK TO LOC. TFC CALLED TO DH8C AND DH8C CALLED TFC IN SIGHT AT 3 MI. ONE FINAL OPEN WHEN TFC BUILT UP DRAMATICALLY. TOOK 5 MINS TO SPLIT FINALS DUE TO VOLUME. TO PREVENT -- SPLIT FINALS SOONER.

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.