Narrative:

I was working arrival north position at the st louis TRACON. I observed aircraft, inbound on an ILS approach descend into the airspace of another controller. I immediately brought this situation to the attention of both a first and a second level supervisor. The aircraft flew a published ILS approach. After passing the final approach fix, the aircraft continued to descend. The aircraft crossed the 6 NM arc of the stl ASR antenna at 1900. The boundary of the low altitude controller's airspace is defined as from the 6 NM to the 10 NM arc of the stl ASR antenna up to, but not including, 2000 MSL. My contention is that the stl radar order, 7110.60, allows for aircraft to utilize a published instrument approach procedure and violate airspace assigned to another controller.

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Original NASA ASRS Text

Title: RPTR SAYS ILS APCHS TO RWY 12R AND 12L PENETRATE AIRSPACE BELONGING TO LOW ALT CTLR. SAYS POOR PROC.

Narrative: I WAS WORKING ARR N POS AT THE ST LOUIS TRACON. I OBSERVED ACFT, INBOUND ON AN ILS APCH DSND INTO THE AIRSPACE OF ANOTHER CTLR. I IMMEDIATELY BROUGHT THIS SITUATION TO THE ATTN OF BOTH A FIRST AND A SECOND LEVEL SUPVR. THE ACFT FLEW A PUBLISHED ILS APCH. AFTER PASSING THE FINAL APCH FIX, THE ACFT CONTINUED TO DSND. THE ACFT CROSSED THE 6 NM ARC OF THE STL ASR ANTENNA AT 1900. THE BOUNDARY OF THE LOW ALT CTLR'S AIRSPACE IS DEFINED AS FROM THE 6 NM TO THE 10 NM ARC OF THE STL ASR ANTENNA UP TO, BUT NOT INCLUDING, 2000 MSL. MY CONTENTION IS THAT THE STL RADAR ORDER, 7110.60, ALLOWS FOR ACFT TO UTILIZE A PUBLISHED INST APCH PROC AND VIOLATE AIRSPACE ASSIGNED TO ANOTHER CTLR.

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.