Narrative:

ZID cleared aircraft X heavy to descend to FL230. 'Aircraft X vacating FL240 for FL230.' several seconds passed, then ZID, 'and hustle it up aircraft X.' aircraft X, 'roger.' we began a descent. At FL237 a TCASII TA appeared on an aircraft, right 2 O'clock position, with a descending trend vector. ZID, 'aircraft Y, climb FL240.' simultaneously, the TA became an RA. We responded to RA and transmitted, 'aircraft X responding to RA, climbing FL240.' we visually acquired RA traffic, right 2 O'clock position, approximately 5 mi converging. As we continued RA response parameters, RA traffic was observed in a descending left turn. ZID made a broken transmission then rexmitted, 'aircraft X, say altitude.' we responded with 'FL238.' as we leveled off at FL240, RA traffic was monitored moving aircraft and below our position. An rj passed our right 4-5 O'clock position, approximately 6000 ft laterally and several hundred ft below us. The RA disappeared off the TCASII display. Several more seconds passed when we received a frequency change. We're subsequently cleared to FL230 after checking in with the new controller.

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Original NASA ASRS Text

Title: B767 FLT CREW CHRONICLES TCASII RA EVENT AT FL240 DURING DSCNT WITH ZID.

Narrative: ZID CLRED ACFT X HVY TO DSND TO FL230. 'ACFT X VACATING FL240 FOR FL230.' SEVERAL SECONDS PASSED, THEN ZID, 'AND HUSTLE IT UP ACFT X.' ACFT X, 'ROGER.' WE BEGAN A DSCNT. AT FL237 A TCASII TA APPEARED ON AN ACFT, R 2 O'CLOCK POS, WITH A DSNDING TREND VECTOR. ZID, 'ACFT Y, CLB FL240.' SIMULTANEOUSLY, THE TA BECAME AN RA. WE RESPONDED TO RA AND XMITTED, 'ACFT X RESPONDING TO RA, CLBING FL240.' WE VISUALLY ACQUIRED RA TFC, R 2 O'CLOCK POS, APPROX 5 MI CONVERGING. AS WE CONTINUED RA RESPONSE PARAMETERS, RA TFC WAS OBSERVED IN A DSNDING L TURN. ZID MADE A BROKEN XMISSION THEN REXMITTED, 'ACFT X, SAY ALT.' WE RESPONDED WITH 'FL238.' AS WE LEVELED OFF AT FL240, RA TFC WAS MONITORED MOVING ACFT AND BELOW OUR POS. AN RJ PASSED OUR R 4-5 O'CLOCK POS, APPROX 6000 FT LATERALLY AND SEVERAL HUNDRED FT BELOW US. THE RA DISAPPEARED OFF THE TCASII DISPLAY. SEVERAL MORE SECONDS PASSED WHEN WE RECEIVED A FREQ CHANGE. WE'RE SUBSEQUENTLY CLRED TO FL230 AFTER CHKING IN WITH THE NEW CTLR.

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.