Apparent loss of separation between reporter's MD80 and an unknown aircraft at same altitude.

Attributes
ACN	395835
Time
Date	199803
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : crl
State Reference	MI
Altitude	msl bound lower : 29000 msl bound upper : 29300
Environment
Light	Night
Aircraft 1
Controlling Facilities	artcc : zau
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	other : unknown
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	395835
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

We were at FL290 west of keeler with a clearance of direct elx and depart elx on 085 degree heading. Shortly after departing elx, ZAU directed us to turn right 140 degrees and climb to FL330. We had just started our turn and had climbed about 300 ft when we received an RA to descend. We continued our turn and descended to FL285 and advised the center. TCASII indicated traffic on the nose at 8-10 mi at our altitude of FL290. The other aircraft advised he had an RA also. No TA was received from the center. The other aircraft passed off our left wing (unsure of distance and traffic was not observed visually) about 500 ft above our altitude of FL285. Center then cleared us to FL330 and we complied. We asked center what had happened and he replied his paperwork was handled at his end and we should do our paperwork with our company. That's all we know or were aware of, that's it.

Original NASA ASRS Text

Title: APPARENT LOSS OF SEPARATION BTWN RPTR'S MD80 AND AN UNKNOWN ACFT AT SAME ALT.

Narrative: WE WERE AT FL290 W OF KEELER WITH A CLRNC OF DIRECT ELX AND DEPART ELX ON 085 DEG HDG. SHORTLY AFTER DEPARTING ELX, ZAU DIRECTED US TO TURN R 140 DEGS AND CLB TO FL330. WE HAD JUST STARTED OUR TURN AND HAD CLBED ABOUT 300 FT WHEN WE RECEIVED AN RA TO DSND. WE CONTINUED OUR TURN AND DSNDED TO FL285 AND ADVISED THE CTR. TCASII INDICATED TFC ON THE NOSE AT 8-10 MI AT OUR ALT OF FL290. THE OTHER ACFT ADVISED HE HAD AN RA ALSO. NO TA WAS RECEIVED FROM THE CTR. THE OTHER ACFT PASSED OFF OUR L WING (UNSURE OF DISTANCE AND TFC WAS NOT OBSERVED VISUALLY) ABOUT 500 FT ABOVE OUR ALT OF FL285. CTR THEN CLRED US TO FL330 AND WE COMPLIED. WE ASKED CTR WHAT HAD HAPPENED AND HE REPLIED HIS PAPERWORK WAS HANDLED AT HIS END AND WE SHOULD DO OUR PAPERWORK WITH OUR COMPANY. THAT'S ALL WE KNOW OR WERE AWARE OF, THAT'S IT.

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.