Narrative:

TCASII advised us to 'descend.' we were on a radar vector for the visual approach to myrtle beach jetport (myr) at 2600 ft and had traffic descending toward our altitude approximately 5 mi ahead. The traffic was flying northbound to grand strand airport and we were being vectored sbound to myr beach jetport. Frequency congestion prevented controller from pointing out the traffic until it was 3 mi ahead and 600 ft above us. We received a 'descend' RA on TCASII and told controller we need 1600 ft immediately. We descended to 1600 ft and saw other aircraft pass overhead. I think the controller was speaking to other aircraft also, but was so overwhelmed with the sunday afternoon, single engine airplanes all around the area that he failed to point out the traffic until now. Many of the GA airplanes were answering to the wrong tail numbers.

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Original NASA ASRS Text

Title: FLC OF AN LTT ARR ACFT DSNDED FROM ASSIGNED APCH ALT IN RESPONSE TO A TCASII RA.

Narrative: TCASII ADVISED US TO 'DSND.' WE WERE ON A RADAR VECTOR FOR THE VISUAL APCH TO MYRTLE BEACH JETPORT (MYR) AT 2600 FT AND HAD TFC DSNDING TOWARD OUR ALT APPROX 5 MI AHEAD. THE TFC WAS FLYING NBOUND TO GRAND STRAND ARPT AND WE WERE BEING VECTORED SBOUND TO MYR BEACH JETPORT. FREQ CONGESTION PREVENTED CTLR FROM POINTING OUT THE TFC UNTIL IT WAS 3 MI AHEAD AND 600 FT ABOVE US. WE RECEIVED A 'DSND' RA ON TCASII AND TOLD CTLR WE NEED 1600 FT IMMEDIATELY. WE DSNDED TO 1600 FT AND SAW OTHER ACFT PASS OVERHEAD. I THINK THE CTLR WAS SPEAKING TO OTHER ACFT ALSO, BUT WAS SO OVERWHELMED WITH THE SUNDAY AFTERNOON, SINGLE ENG AIRPLANES ALL AROUND THE AREA THAT HE FAILED TO POINT OUT THE TFC UNTIL NOW. MANY OF THE GA AIRPLANES WERE ANSWERING TO THE WRONG TAIL NUMBERS.

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.