Narrative:

Proceeding south to colts neck VOR on the 350 degree radial. Inbound at 6000 ft, we received a TCASII alert to 'climb.' traffic previously unrpted by ATC illuminated our TCASII. We observed traffic conflict on the TCASII and captain initiated a climb while I called ATC and advised them of our actions. There was no congestion on the frequency. The controller was not excited by this news at all. He stated that he knew of the traffic already. If he would have advised us of this traffic information, we may have been able to visually spot the other aircraft and therefore verify need to climb.

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Original NASA ASRS Text

Title: AN MLG RESPONDED TO A TCASII COMMAND TO CLB. THE INTRUDER ACFT WAS VFR. ATC DID NOT NOTIFY THE ACR MLG OF THE INTRUDER.

Narrative: PROCEEDING S TO COLTS NECK VOR ON THE 350 DEG RADIAL. INBOUND AT 6000 FT, WE RECEIVED A TCASII ALERT TO 'CLB.' TFC PREVIOUSLY UNRPTED BY ATC ILLUMINATED OUR TCASII. WE OBSERVED TFC CONFLICT ON THE TCASII AND CAPT INITIATED A CLB WHILE I CALLED ATC AND ADVISED THEM OF OUR ACTIONS. THERE WAS NO CONGESTION ON THE FREQ. THE CTLR WAS NOT EXCITED BY THIS NEWS AT ALL. HE STATED THAT HE KNEW OF THE TFC ALREADY. IF HE WOULD HAVE ADVISED US OF THIS TFC INFO, WE MAY HAVE BEEN ABLE TO VISUALLY SPOT THE OTHER ACFT AND THEREFORE VERIFY NEED TO CLB.

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.