Narrative:

WX had closed the bolos departure (or south) at iah. Iah approach (or I90) was supposed to rerte all eastbound departures via the trios departure (east), and provide the bpt (36) sector with 10 mi in trail. I was assigned to bpt D (36D), or radar associate position, and the radar controller received handoffs on the AT43 (Y) at 13000 ft, and the E145 (X) at 12000 ft climbing to 15000 ft. We observed over a 200 KT overtake. The radar controller stopped the E145 at 12000 ft and I called I90 with a TA (traffic alert), and advised them we had stopped the E145 at 12000 ft. The controller replied he had the AT43 on a heading and thought it was ok. (I90 is to give bpt aircraft 5 mi in trail greater, or increasing, and this was supposed to be 10 mi in trail.) no headings or speeds had been coordinated as is required. The radar (bpt-right) had given both aircraft direct bpt because of arrival aircraft in the adjacent sectors and we were showing both aircraft should have been direct to bpt. If the approach controller had coordinated (as required), this incident would not have occurred. The approach controller also was unaware of the 10 mi in trail restr and said they were showing free flow.

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Original NASA ASRS Text

Title: ZHU HDOF CTLR INITIATES ACTION TO SEPARATE E145 AND AT43 AFTER HDOF FROM I90 WHEN OBSERVING E145 OVERTAKING AT43 ON DEP.

Narrative: WX HAD CLOSED THE BOLOS DEP (OR S) AT IAH. IAH APCH (OR I90) WAS SUPPOSED TO RERTE ALL EBOUND DEPS VIA THE TRIOS DEP (E), AND PROVIDE THE BPT (36) SECTOR WITH 10 MI IN TRAIL. I WAS ASSIGNED TO BPT D (36D), OR RADAR ASSOCIATE POS, AND THE RADAR CTLR RECEIVED HDOFS ON THE AT43 (Y) AT 13000 FT, AND THE E145 (X) AT 12000 FT CLBING TO 15000 FT. WE OBSERVED OVER A 200 KT OVERTAKE. THE RADAR CTLR STOPPED THE E145 AT 12000 FT AND I CALLED I90 WITH A TA (TFC ALERT), AND ADVISED THEM WE HAD STOPPED THE E145 AT 12000 FT. THE CTLR REPLIED HE HAD THE AT43 ON A HDG AND THOUGHT IT WAS OK. (I90 IS TO GIVE BPT ACFT 5 MI IN TRAIL GREATER, OR INCREASING, AND THIS WAS SUPPOSED TO BE 10 MI IN TRAIL.) NO HDGS OR SPDS HAD BEEN COORDINATED AS IS REQUIRED. THE RADAR (BPT-R) HAD GIVEN BOTH ACFT DIRECT BPT BECAUSE OF ARR ACFT IN THE ADJACENT SECTORS AND WE WERE SHOWING BOTH ACFT SHOULD HAVE BEEN DIRECT TO BPT. IF THE APCH CTLR HAD COORDINATED (AS REQUIRED), THIS INCIDENT WOULD NOT HAVE OCCURRED. THE APCH CTLR ALSO WAS UNAWARE OF THE 10 MI IN TRAIL RESTR AND SAID THEY WERE SHOWING FREE FLOW.

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.