Narrative:

On a routine approach to pit runway 28R ILS we received a TA from our TCASII system. The RA function is inhibited below 2000 ft AGL. In compliance with our company procedures, we executed a go around. In completing our required callouts and the captain communicating with ATC, we made a turn to 360 degrees as assigned, but do not recall an altitude assignment. Per our manuals, missed approach altitude will be set at 1000 ft above decision ht. With our altitude preselect alerter set to 5000 ft per the missed approach procedure, we initiated a climb. At 4700 ft, ATC queried our altitude and gave us a descent to 4000 ft. After being vectored back to the ILS and landing, we were given a phone number to call the radar room. This event was explained to the TRACON controller supervisor.

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Original NASA ASRS Text

Title: SF34 FLT CREW ON PIT ILS RWY 28R APCH INSIDE ZAIKO INTXN, EXECUTES A TCASII INITIATED GAR DUE TO A D328 IN SAME GENERAL VICINITY WITHIN 1 MI.

Narrative: ON A ROUTINE APCH TO PIT RWY 28R ILS WE RECEIVED A TA FROM OUR TCASII SYS. THE RA FUNCTION IS INHIBITED BELOW 2000 FT AGL. IN COMPLIANCE WITH OUR COMPANY PROCS, WE EXECUTED A GAR. IN COMPLETING OUR REQUIRED CALLOUTS AND THE CAPT COMMUNICATING WITH ATC, WE MADE A TURN TO 360 DEGS AS ASSIGNED, BUT DO NOT RECALL AN ALT ASSIGNMENT. PER OUR MANUALS, MISSED APCH ALT WILL BE SET AT 1000 FT ABOVE DECISION HT. WITH OUR ALT PRESELECT ALERTER SET TO 5000 FT PER THE MISSED APCH PROC, WE INITIATED A CLB. AT 4700 FT, ATC QUERIED OUR ALT AND GAVE US A DSCNT TO 4000 FT. AFTER BEING VECTORED BACK TO THE ILS AND LNDG, WE WERE GIVEN A PHONE NUMBER TO CALL THE RADAR ROOM. THIS EVENT WAS EXPLAINED TO THE TRACON CTLR SUPVR.

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.