Air carrier was inadvertently left at an altitude that conflicted with another aircraft.

Attributes
ACN	112386
Time
Date	198905
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : hyk
State Reference	KY
Altitude	msl bound lower : 34000 msl bound upper : 35000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller non radar : 3 controller radar : 2
ASRS Report	112386
Person 2
Affiliation	government : faa
Function	controller : flight data
Qualification	controller : radar
Experience	controller non radar : 8 controller radar : 6
ASRS Report	112219
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	atc equipment other atc equipment : unspecified other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	horizontal : 17400 vertical : 1000
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

While working the hi sector at indianapolis center (9 aircraft on frequency, 3 climbing, 2 descending, 4 radar vectors, 21 data blocks on scope), air carrier X called at FL370. Shortly after he declared a medical emergency and requested clearance to the greater cincinnati airport. This was accomplished and a descent clearance given to FL240. Out of FL355, air carrier X stated the individual had stabilized and wanted to go on to clt. A clearance was issued to clt at FL350 due to traffic at FL330 and FL370. Air carrier Y was nwbnd at FL350 and was overlooked as traffic for air carrier X. A 50 degree left turn was issued to air carrier Y and a 90 degree heading was issued to air carrier X along with an 'expedite descent' clearance to FL330. Air carrier X was still requesting medical assistance at clt. The 2 aircraft passed with 2.9 mi and 1000'. Traffic was called, air carrier X again requested a clearance to cvg and medical assistance on the ground. The heart attack victim was reviewed on the ground by medical personnel.

Original NASA ASRS Text

Title: ACR WAS INADVERTENTLY LEFT AT AN ALT THAT CONFLICTED WITH ANOTHER ACFT.

Narrative: WHILE WORKING THE HI SECTOR AT INDIANAPOLIS CENTER (9 ACFT ON FREQ, 3 CLBING, 2 DSNDING, 4 RADAR VECTORS, 21 DATA BLOCKS ON SCOPE), ACR X CALLED AT FL370. SHORTLY AFTER HE DECLARED A MEDICAL EMER AND REQUESTED CLRNC TO THE GREATER CINCINNATI ARPT. THIS WAS ACCOMPLISHED AND A DSCNT CLRNC GIVEN TO FL240. OUT OF FL355, ACR X STATED THE INDIVIDUAL HAD STABILIZED AND WANTED TO GO ON TO CLT. A CLRNC WAS ISSUED TO CLT AT FL350 DUE TO TFC AT FL330 AND FL370. ACR Y WAS NWBND AT FL350 AND WAS OVERLOOKED AS TFC FOR ACR X. A 50 DEG LEFT TURN WAS ISSUED TO ACR Y AND A 90 DEG HDG WAS ISSUED TO ACR X ALONG WITH AN 'EXPEDITE DSCNT' CLRNC TO FL330. ACR X WAS STILL REQUESTING MEDICAL ASSISTANCE AT CLT. THE 2 ACFT PASSED WITH 2.9 MI AND 1000'. TFC WAS CALLED, ACR X AGAIN REQUESTED A CLRNC TO CVG AND MEDICAL ASSISTANCE ON THE GND. THE HEART ATTACK VICTIM WAS REVIEWED ON THE GND BY MEDICAL PERSONNEL.

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