Separation was lost between aircraft X and aircraft Y.

Attributes
ACN	445281
Time
Date	199907
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : iiu.vortac
State Reference	KY
Altitude	msl bound lower : 33000 msl bound upper : 34300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid.artcc
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : vacating altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zid.artcc
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
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 : 12 controller time certified in position1 : 12
ASRS Report	445281
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	altitude deviation : crossing restriction not met conflict : airborne less severe non adherence : required legal separation non adherence : clearance
Independent Detector	atc equipment : conflict alert aircraft equipment : tcas other controllera other controllerb other flight crewa
Resolutory Action	flight crew : took evasive action none taken : insufficient time
Consequence	faa : investigated
Miss Distance	horizontal : 9000 vertical : 1300
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Intra Facility Coordination Failure Operational Error

Narrative:

Air carrier 1X was swbound climbing to FL350. Aircraft was on another frequency. Air carrier 1Y was swbound at FL330 approximately 8 mi northeast of air carrier 2. Aircraft Z was northeast on a vector for additional traffic at FL330. Air carrier 1X advised he could be level in 2 mins which was prior to confliction with air carrier 2X. Pilot then advised he would not be able to level in prescribed time. Controller turned air carrier 1X to heading 340 degrees which placed him in confliction with air carrier 1Y. This was not the action I would have done to resolve conflict with air carrier 2X, so I was caught off guard and was slow to issue a turn to air carrier 1Y. By the time I did issue a turn it was too late to maintain separation. In the future I will make sure both myself and another controller understand and agree upon an alternate plan of action.

Original NASA ASRS Text

Title: SEPARATION WAS LOST BTWN ACFT X AND ACFT Y.

Narrative: ACR 1X WAS SWBOUND CLBING TO FL350. ACFT WAS ON ANOTHER FREQ. ACR 1Y WAS SWBOUND AT FL330 APPROX 8 MI NE OF ACR 2. ACFT Z WAS NE ON A VECTOR FOR ADDITIONAL TFC AT FL330. ACR 1X ADVISED HE COULD BE LEVEL IN 2 MINS WHICH WAS PRIOR TO CONFLICTION WITH ACR 2X. PLT THEN ADVISED HE WOULD NOT BE ABLE TO LEVEL IN PRESCRIBED TIME. CTLR TURNED ACR 1X TO HEADING 340 DEGS WHICH PLACED HIM IN CONFLICTION WITH ACR 1Y. THIS WAS NOT THE ACTION I WOULD HAVE DONE TO RESOLVE CONFLICT WITH ACR 2X, SO I WAS CAUGHT OFF GUARD AND WAS SLOW TO ISSUE A TURN TO ACR 1Y. BY THE TIME I DID ISSUE A TURN IT WAS TOO LATE TO MAINTAIN SEPARATION. IN THE FUTURE I WILL MAKE SURE BOTH MYSELF AND ANOTHER CTLR UNDERSTAND AND AGREE UPON AN ALTERNATE PLAN OF ACTION.

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.