An air carrier mdt reports that he had to provide his own separation from an onrushing aircraft.

Attributes
ACN	310541
Time
Date	199507
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : iiu
State Reference	IN
Altitude	msl bound lower : 35000 msl bound upper : 35000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other cruise other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Flight Phase	cruise other cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	310541
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
ASRS Report	310540
Events
Anomaly	non adherence : published procedure non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 48000 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

80 mi southeast of iiu at FL350, heading 270 degrees. TCASII screen indicates traffic at 12 O'clock at our altitude, 40 mi and closing. I call center to inquire about traffic. Center states he has traffic at 1:30 - 2 O'clock but nothing at 12 O'clock. I call center again at 20 mi about traffic. He then repeats he has nothing at 12 O'clock at 15 mi, I request turn in lieu of impending RA/TA. He gives an affirm to turn. I turn right as the other airplane begins to turn left. He then begins to descend. He passes at our 12:30 O'clock, 8 NM, 500 ft below. Controller requests a synopsis of what just occurred. I notify him I will call ZID upon reaching ord. I call and speak to supervisor on duty about what had just transpired. He thought impending safety breech was not a concern, stated airplane was to pass behind me by 10 mi. We both agreed to file.

Original NASA ASRS Text

Title: AN ACR MDT RPTS THAT HE HAD TO PROVIDE HIS OWN SEPARATION FROM AN ONRUSHING ACFT.

Narrative: 80 MI SE OF IIU AT FL350, HDG 270 DEGS. TCASII SCREEN INDICATES TFC AT 12 O'CLOCK AT OUR ALT, 40 MI AND CLOSING. I CALL CTR TO INQUIRE ABOUT TFC. CTR STATES HE HAS TFC AT 1:30 - 2 O'CLOCK BUT NOTHING AT 12 O'CLOCK. I CALL CTR AGAIN AT 20 MI ABOUT TFC. HE THEN REPEATS HE HAS NOTHING AT 12 O'CLOCK AT 15 MI, I REQUEST TURN IN LIEU OF IMPENDING RA/TA. HE GIVES AN AFFIRM TO TURN. I TURN R AS THE OTHER AIRPLANE BEGINS TO TURN L. HE THEN BEGINS TO DSND. HE PASSES AT OUR 12:30 O'CLOCK, 8 NM, 500 FT BELOW. CTLR REQUESTS A SYNOPSIS OF WHAT JUST OCCURRED. I NOTIFY HIM I WILL CALL ZID UPON REACHING ORD. I CALL AND SPEAK TO SUPVR ON DUTY ABOUT WHAT HAD JUST TRANSPIRED. HE THOUGHT IMPENDING SAFETY BREECH WAS NOT A CONCERN, STATED AIRPLANE WAS TO PASS BEHIND ME BY 10 MI. WE BOTH AGREED TO FILE.

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.