Air carrier X had less than standard separation from mlt Y. System error.

Attributes
ACN	183571
Time
Date	199107
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : igb
State Reference	MS
Altitude	msl bound lower : 22000 msl bound upper : 23000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zme
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Military Transport
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 2500 flight time type : 500
ASRS Report	183571
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	horizontal : 9000 vertical : 1000
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Air carrier X was in a climb to FL230 under control of columbus approach. I saw mlt Y off the nose about 10 mi away and I thought we were following him into dfw. We soon realized he was coming towards us around co-altitude. About 3 mi away the controller gave us a left turn to both of us. Mlt Y initially turned towards us and then corrected. We passed abeam and 1 1/2 mi and 1000 ft lower. The controller gave us no heads up calls until the 3 mi and sounded very bored with the whole thing. I don't understand why we were handoff to columbus approach anyway.

Original NASA ASRS Text

Title: ACR X HAD LTSS FROM MLT Y. SYS ERROR.

Narrative: ACR X WAS IN A CLB TO FL230 UNDER CTL OF COLUMBUS APCH. I SAW MLT Y OFF THE NOSE ABOUT 10 MI AWAY AND I THOUGHT WE WERE FOLLOWING HIM INTO DFW. WE SOON REALIZED HE WAS COMING TOWARDS US AROUND CO-ALT. ABOUT 3 MI AWAY THE CTLR GAVE US A L TURN TO BOTH OF US. MLT Y INITIALLY TURNED TOWARDS US AND THEN CORRECTED. WE PASSED ABEAM AND 1 1/2 MI AND 1000 FT LOWER. THE CTLR GAVE US NO HEADS UP CALLS UNTIL THE 3 MI AND SOUNDED VERY BORED WITH THE WHOLE THING. I DON'T UNDERSTAND WHY WE WERE HDOF TO COLUMBUS APCH ANYWAY.

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.