WHILE DISTR BY A TCASII TA FLC CLBS 600 FT BEYOND THEIR ASSIGNED ALT.

Narrative

IMMEDIATELY AFTER TKOF AND CLBING THROUGH 500 FT AGL WE RECEIVED A TCASII TA (RA DEACTIVATED DUE TO CURRENT OPERATING RESTRICTION) THAT INDICATED AN ACFT AT 11 O'CLOCK AND APPROX 1 MI 200 FT BELOW US. WE WERE STILL IN THE INITIAL TKOF/CLB ATTITUDE OF APPROX 16 DEG NOSE UP AND NEVER VISUALLY SAW THE OTHER ACFT. WE RPTED THE INCIDENT TO DEP CTL AND ASKED IF THERE WAS ANY OTHER KNOWN TFC IN VICINITY AS WE SUSPECTED POSSIBLE EQUIP MALFUNCTION. DEP CTL SAID THEY WOULD DO A SEARCH. IN THE MIDST OF OUR CONCERN FOR A POTENTIALLY SERIOUS CONFLICT; THE FO (PF) PASSED THROUGH OUR ASSIGNED ALT OF 5000 FT. AT 5600 FT I BROUGHT IT TO HIS ATTN AND HE IMMEDIATELY BEGAN TO CORRECT. SIMULTANEOUSLY; DEP CTL GAVE US A NEW ASSIGNED ALT OF 6000 FT. 2 LESSONS: AFTER A TCASII EVENT IS OVER WITH; FORGET IT; AND RETURN TO THE PRIMARY TASK OF FLYING THE AIRPLANE. WE ALLOWED THE EVENT TO CONTINUE TO DISTR US AFTER THE CONFLICT WAS CLRED. DEP CTL LATER TOLD US THERE WAS A TFC HELI IN OUR VICINITY AT THE TIME OF THE TCASII TA. I FEEL THIS IS INFO THE TWR CTLR SHOULD HAVE KNOWN ABOUT AND PASSED ALONG PRIOR TO DEP.