ZID controller experienced operational error at FL290 during in-trail vectoring procedures for cvg.

Attributes
ACN	623843
Time
Date	200407
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : pxv.vortac
State Reference	IN
Altitude	msl single value : 29000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid.artcc
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	cruise : level
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zid.artcc
Operator	common carrier : air carrier
Make Model Name	Do 328 TP (Turboprop)
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 15 controller time certified in position1 : 14
ASRS Report	623843
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
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 new clearance flight crew : took evasive action
Consequence	faa : investigated
Miss Distance	horizontal : 18000 vertical : 500
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Aircraft X was assigned a heading for in-trail spacing to cvg. Aircraft Y was sbound at FL290 landing bna. 3 other cvg arrs were in front of aircraft X with aircraft Z on a vector for spacing at 260 KTS, whom aircraft X would follow. Aircraft xx was a luk arrival from the west who was descended to FL270 under aircraft zz, another bna arrival at FL280 in front of aircraft Y. Aircraft xx was between aircraft Z and aircraft X, with enough space between aircraft Z and aircraft X, aircraft X was issued a 70 degree heading (approximately 60 degree turn) and slowed to 260 KTS to stay in line. Was then turned back on the arrival behind the aircraft X in front of him. Conflict alert activated between aircraft X (FL290) and aircraft Y. Aircraft Y was expedited to FL280. Aircraft X was issued a left turn to 360 degrees. Aircraft X received an RA at the time of the event.

Original NASA ASRS Text

Title: ZID CTLR EXPERIENCED OPERROR AT FL290 DURING IN-TRAIL VECTORING PROCS FOR CVG.

Narrative: ACFT X WAS ASSIGNED A HDG FOR IN-TRAIL SPACING TO CVG. ACFT Y WAS SBOUND AT FL290 LNDG BNA. 3 OTHER CVG ARRS WERE IN FRONT OF ACFT X WITH ACFT Z ON A VECTOR FOR SPACING AT 260 KTS, WHOM ACFT X WOULD FOLLOW. ACFT XX WAS A LUK ARR FROM THE W WHO WAS DSNDED TO FL270 UNDER ACFT ZZ, ANOTHER BNA ARR AT FL280 IN FRONT OF ACFT Y. ACFT XX WAS BTWN ACFT Z AND ACFT X, WITH ENOUGH SPACE BTWN ACFT Z AND ACFT X, ACFT X WAS ISSUED A 70 DEG HDG (APPROX 60 DEG TURN) AND SLOWED TO 260 KTS TO STAY IN LINE. WAS THEN TURNED BACK ON THE ARR BEHIND THE ACFT X IN FRONT OF HIM. CONFLICT ALERT ACTIVATED BTWN ACFT X (FL290) AND ACFT Y. ACFT Y WAS EXPEDITED TO FL280. ACFT X WAS ISSUED A L TURN TO 360 DEGS. ACFT X RECEIVED AN RA AT THE TIME OF THE EVENT.

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.