Okc approach controller experienced operational error between climbing and descending aircraft.

Attributes
ACN	621736
Time
Date	200406
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : irw.vortac
State Reference	OK
Altitude	msl single value : 6000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : okc.tracon
Operator	general aviation : personal
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : okc.tracon
Operator	general aviation : corporate
Make Model Name	Harrier
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
ASRS Report	621736
Person 2
Affiliation	government : faa
Function	controller : approach
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	atc equipment : conflict alert other controllera
Resolutory Action	controller : issued alert
Consequence	faa : investigated
Miss Distance	horizontal : 6000 vertical : 600
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

All aircraft are on IFR. Crj, 10 mi northeast of irw at 6000 ft sbound, vectored to downwind. PA28 7000 ft sbound 10 mi north irw sbound. HS25 off okc northbound climbing to 5000 ft, cleared to 1500 ft on initial contact because procedure for final has control for descent on contact. I consider this procedure to be unsafe. Final should not descend on contact, but rather when the aircraft enters their airspace.

Original NASA ASRS Text

Title: OKC APCH CTLR EXPERIENCED OPERROR BTWN CLBING AND DSNDING ACFT.

Narrative: ALL ACFT ARE ON IFR. CRJ, 10 MI NE OF IRW AT 6000 FT SBOUND, VECTORED TO DOWNWIND. PA28 7000 FT SBOUND 10 MI N IRW SBOUND. HS25 OFF OKC NBOUND CLBING TO 5000 FT, CLRED TO 1500 FT ON INITIAL CONTACT BECAUSE PROC FOR FINAL HAS CTL FOR DSCNT ON CONTACT. I CONSIDER THIS PROC TO BE UNSAFE. FINAL SHOULD NOT DSND ON CONTACT, BUT RATHER WHEN THE ACFT ENTERS THEIR AIRSPACE.

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.