ZID ARTCC controller descended traffic at FL370 to an occupied altitude resulting in a loss of separ...

Attributes
ACN	565805
Time
Date	200211
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : hnn.vortac
State Reference	WV
Altitude	msl bound lower : 33000 msl bound upper : 35000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid.artcc
Operator	common carrier : air carrier
Make Model Name	Regional Jet 200 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zid.artcc
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : enroute altitude change
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller military : 13 controller radar : 17 controller supervisory : 4 controller time certified in position1 : 11 controller time certified in position2 : 3
ASRS Report	565805
Person 2
Affiliation	government : faa
Function	controller : radar
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	atc equipment : conflict alert atc equipment other atc equipment : radar/mode c other controllera other controllerb other flight crewa other flight crewb
Resolutory Action	none taken : insufficient time
Consequence	faa : investigated
Miss Distance	horizontal : 6000 vertical : 1300
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Sector was a 2, on a scale of 5, as far as traffic when I sat down on position. I lost use of my headset almost immediately and it lasted 10 mins. When I regained control of sector, it was almost on 5, on a scale of 5, as far as traffic and I was well behind. I should've asked for assistance when I took back over the sector, but I didn't. I was way behind and I never caught up. I descended an aircraft out of FL350 to make a crossing for an aircraft and had traffic at FL330. I simply missed the 2 aircraft.

Original NASA ASRS Text

Title: ZID ARTCC CTLR DSNDED TFC AT FL370 TO AN OCCUPIED ALT RESULTING IN A LOSS OF SEPARATION.

Narrative: SECTOR WAS A 2, ON A SCALE OF 5, AS FAR AS TFC WHEN I SAT DOWN ON POS. I LOST USE OF MY HEADSET ALMOST IMMEDIATELY AND IT LASTED 10 MINS. WHEN I REGAINED CTL OF SECTOR, IT WAS ALMOST ON 5, ON A SCALE OF 5, AS FAR AS TFC AND I WAS WELL BEHIND. I SHOULD'VE ASKED FOR ASSISTANCE WHEN I TOOK BACK OVER THE SECTOR, BUT I DIDN'T. I WAS WAY BEHIND AND I NEVER CAUGHT UP. I DSNDED AN ACFT OUT OF FL350 TO MAKE A XING FOR AN ACFT AND HAD TFC AT FL330. I SIMPLY MISSED THE 2 ACFT.

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.

ZID ARTCC controller descended traffic at FL370 to an occupied altitude resulting in a loss of separation.