Narrative:

We were level at FL290, I heard ZTL call traffic for another aircraft. It sounded like the traffic called was our aircraft so I began looking for the traffic at our 1 O'clock (the controller did not call traffic for us). I heard the TCASII call 'traffic,' I looked at the TCASII and saw the aircraft was at our 1 O'clock about 5-6 mi and 1000 ft below us. I began looking again for the traffic. Within 5 seconds we got a RA on the TCASII 'climb, climb.' I looked back in at the TCASII and it was 900 ft and went to 800 ft at 2 mi or less at about 1 O'clock I looked out one more time for the traffic. The captain asked quickly if I had the traffic and I said no. The captain kicked off the autoplt and climbed as directed by the TCASII. I called ZTL and told them we had left 290 because of a TCASII resolution. We were about 29300 and I was outside looking again. The TCASII showed that the aircraft was staying 800 ft below us. At 29500 the TCASII called 'monitor vertical speed.' the captain began reducing his climb. At 29700 TCASII called 'clear of traffic.' we climbed no higher than 29700 and began descending back to 290. ZTL said we had 2 fgt's at 310, we descended and were at 290 when ZTL said the fgt's were at 2 mi passing off our right wing. ZTL asked the other aircraft if they were off altitude. They said no. We were advised they (ZTL) would have to report it. The TCASII system tested 'good' both before and after the flight.

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Original NASA ASRS Text

Title: ACR MLG ACFT HAD A TCASII ALERT REQUIRING A CLB. MLG RESPONDED. ATC CALLED 2 FGT ACFT RPTING ABOVE THE MLG. MLG ACFT SAW THE FGT ACFT BELOW THEM. NO FURTHER CONFLICT.

Narrative: WE WERE LEVEL AT FL290, I HEARD ZTL CALL TFC FOR ANOTHER ACFT. IT SOUNDED LIKE THE TFC CALLED WAS OUR ACFT SO I BEGAN LOOKING FOR THE TFC AT OUR 1 O'CLOCK (THE CTLR DID NOT CALL TFC FOR US). I HEARD THE TCASII CALL 'TFC,' I LOOKED AT THE TCASII AND SAW THE ACFT WAS AT OUR 1 O'CLOCK ABOUT 5-6 MI AND 1000 FT BELOW US. I BEGAN LOOKING AGAIN FOR THE TFC. WITHIN 5 SECONDS WE GOT A RA ON THE TCASII 'CLB, CLB.' I LOOKED BACK IN AT THE TCASII AND IT WAS 900 FT AND WENT TO 800 FT AT 2 MI OR LESS AT ABOUT 1 O'CLOCK I LOOKED OUT ONE MORE TIME FOR THE TFC. THE CAPT ASKED QUICKLY IF I HAD THE TFC AND I SAID NO. THE CAPT KICKED OFF THE AUTOPLT AND CLBED AS DIRECTED BY THE TCASII. I CALLED ZTL AND TOLD THEM WE HAD LEFT 290 BECAUSE OF A TCASII RESOLUTION. WE WERE ABOUT 29300 AND I WAS OUTSIDE LOOKING AGAIN. THE TCASII SHOWED THAT THE ACFT WAS STAYING 800 FT BELOW US. AT 29500 THE TCASII CALLED 'MONITOR VERT SPD.' THE CAPT BEGAN REDUCING HIS CLB. AT 29700 TCASII CALLED 'CLR OF TFC.' WE CLBED NO HIGHER THAN 29700 AND BEGAN DSNDING BACK TO 290. ZTL SAID WE HAD 2 FGT'S AT 310, WE DSNDED AND WERE AT 290 WHEN ZTL SAID THE FGT'S WERE AT 2 MI PASSING OFF OUR R WING. ZTL ASKED THE OTHER ACFT IF THEY WERE OFF ALT. THEY SAID NO. WE WERE ADVISED THEY (ZTL) WOULD HAVE TO RPT IT. THE TCASII SYS TESTED 'GOOD' BOTH BEFORE AND AFTER THE FLT.

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.