Narrative:

Our flight was in level cruise flight at FL290. Nebound on j- 222, approximately 20 NM south of the cam VORTAC. We were alerted to traffic approaching from our right by ATC. We monitored the traffic on our TCASII unit because we were IMC at the time. We noted that the traffic was climbing at a moderate rate in our direction and we anticipated a possible TA because of the somewhat confused discussion between bos ATC and the other aircraft. We did receive a TCASII TA alert followed shortly by a TCASII RA commanding a maximum rate descent. We followed the RA command and descended at maximum rate until we received a 'clear of conflict' message on the TCASII. We requested and received clearance to descend to FL240. There were no passenger or flight crew injuries and we proceeded to our destination. I feel that the TCASII unit on board this aircraft has been refined into an excellent tool for the pilot.

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Original NASA ASRS Text

Title: ACR MLG RECEIVES TCASII RA AND DSCNT COMMAND DUE TO CLBING TFC. CTLR HAD ALERTED FLC TO THE CLBING TFC. RPTR ANTICIPATED A TCASII TA DUE TO CONFUSED DISCUSSION BTWN CTLR AND CLBING ACFT. UNKNOWN IF FLC OF OTHER ACFT CLBED THROUGH ASSIGNED ALT TO CAUSE LTSS OR LTSS WAS CAUSED BY THE TCASII RA EVASIVE ACTION DSCNT BY RPTR.

Narrative: OUR FLT WAS IN LEVEL CRUISE FLT AT FL290. NEBOUND ON J- 222, APPROX 20 NM S OF THE CAM VORTAC. WE WERE ALERTED TO TFC APCHING FROM OUR R BY ATC. WE MONITORED THE TFC ON OUR TCASII UNIT BECAUSE WE WERE IMC AT THE TIME. WE NOTED THAT THE TFC WAS CLBING AT A MODERATE RATE IN OUR DIRECTION AND WE ANTICIPATED A POSSIBLE TA BECAUSE OF THE SOMEWHAT CONFUSED DISCUSSION BTWN BOS ATC AND THE OTHER ACFT. WE DID RECEIVE A TCASII TA ALERT FOLLOWED SHORTLY BY A TCASII RA COMMANDING A MAX RATE DSCNT. WE FOLLOWED THE RA COMMAND AND DSNDED AT MAX RATE UNTIL WE RECEIVED A 'CLR OF CONFLICT' MESSAGE ON THE TCASII. WE REQUESTED AND RECEIVED CLRNC TO DSND TO FL240. THERE WERE NO PAX OR FLC INJURIES AND WE PROCEEDED TO OUR DEST. I FEEL THAT THE TCASII UNIT ON BOARD THIS ACFT HAS BEEN REFINED INTO AN EXCELLENT TOOL FOR THE PLT.

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.