Narrative:

We were descending from 15000 ft to 7000 ft with a clearance direct to tus VOR. We were on the 303 degree radial about 30 DME from the field when we spotted a twin engine aircraft at our 11 O'clock position doing radical turn maneuvers. While passing through 8400 ft, we received a TCASII advisory. At 25 mi (still on the 303 degree radial) the twin engine aircraft turned hard left and the TCASII advisory changed to a TCASII resolution calling for a climb (1500 FPM). We initiated the climb leveling off at 9200 ft at which time the TCASII alert ended. Approach control then cleared us to 6000 ft and reduce speed to 210. We advised approach control of the TCASII resolution, which he acknowledged and cleared us to 6000 ft and 170 KTS. He also indicated he had the other aircraft on radar. (He never advised us of the aircraft C). It seems that if this aircraft was cleared for these maneuvers, and if it was in contact with approach control, he should not have been allowed to conduct them right on the approach corridor to the tus airport (the active runway at the time was 11L with the localizer inbound course being 123 degrees). After calling approach control on the phone the next day, we learned there is a jump stop right there which they have been unsuccessful to move. This jump area is completely unsafe waiting for an accident to happen. Callback conversation with reporter revealed the following information: reporter confirmed that they were on the 303 degree radial and not on the 123 degree radial, '123 degrees inbound.'

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Original NASA ASRS Text

Title: ACR LGT CLBED WHEN THEY RECEIVED A TCASII RA. THEY WERE IN OR NEAR A CHARTED PARACHUTE JUMP ZONE.

Narrative: WE WERE DSNDING FROM 15000 FT TO 7000 FT WITH A CLRNC DIRECT TO TUS VOR. WE WERE ON THE 303 DEG RADIAL ABOUT 30 DME FROM THE FIELD WHEN WE SPOTTED A TWIN ENG ACFT AT OUR 11 O'CLOCK POS DOING RADICAL TURN MANEUVERS. WHILE PASSING THROUGH 8400 FT, WE RECEIVED A TCASII ADVISORY. AT 25 MI (STILL ON THE 303 DEG RADIAL) THE TWIN ENG ACFT TURNED HARD L AND THE TCASII ADVISORY CHANGED TO A TCASII RESOLUTION CALLING FOR A CLB (1500 FPM). WE INITIATED THE CLB LEVELING OFF AT 9200 FT AT WHICH TIME THE TCASII ALERT ENDED. APCH CTL THEN CLRED US TO 6000 FT AND REDUCE SPD TO 210. WE ADVISED APCH CTL OF THE TCASII RESOLUTION, WHICH HE ACKNOWLEDGED AND CLRED US TO 6000 FT AND 170 KTS. HE ALSO INDICATED HE HAD THE OTHER ACFT ON RADAR. (HE NEVER ADVISED US OF THE ACFT C). IT SEEMS THAT IF THIS ACFT WAS CLRED FOR THESE MANEUVERS, AND IF IT WAS IN CONTACT WITH APCH CTL, HE SHOULD NOT HAVE BEEN ALLOWED TO CONDUCT THEM RIGHT ON THE APCH CORRIDOR TO THE TUS ARPT (THE ACTIVE RWY AT THE TIME WAS 11L WITH THE LOC INBOUND COURSE BEING 123 DEGS). AFTER CALLING APCH CTL ON THE PHONE THE NEXT DAY, WE LEARNED THERE IS A JUMP STOP RIGHT THERE WHICH THEY HAVE BEEN UNSUCCESSFUL TO MOVE. THIS JUMP AREA IS COMPLETELY UNSAFE WAITING FOR AN ACCIDENT TO HAPPEN. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR CONFIRMED THAT THEY WERE ON THE 303 DEG RADIAL AND NOT ON THE 123 DEG RADIAL, '123 DEGS INBOUND.'

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.