Narrative:

ZJX clearance was to descend to 11000 ft and be below 14000 ft by cew VOR. We were arriving from the north (atl for pensacola (pns). In the turn over the VOR toward pensi intersection, out of 12000 ft for 11000 ft, ZJX called 12 O'clock traffic northbound VFR at 12.5 mi. Saw an fgt slightly high moving left to right from 12:30 to 1 O'clock position in our right turn as we leveled at 11000 ft. At this point we received a TCASII RA command of 'descend.' we both (captain and I) simultaneously said 'visual, no conflict' thinking the RA was for the reported and sighted traffic. At this point the captain (looking right across the cockpit toward that traffic and into the turn) spotted the red symbol on the TCASII radar screen showing 11500 ft at the 10-11 O'clock position. He then called for descent. As I established an idle, speed brake descent, the second fgt passed within 1/2 mi across our nose, left to right, 500-700 ft high and apparently in trail and slightly below the lead. At the cessation of the RA command and after clearing the area visually and via TCASII, we returned to our assigned altitude of 11000 ft. Total altitude deviation was only 300-400 ft vertically due to the short duration of the avoidance maneuver. Once again I relearned a lesson I thought I would never neglect after 2 decades in fighter aviation -- 'always check for the trailer.' supplemental information from acn 249718: the fgt's were under eglin AFB control and were squawking VFR codes. Better coordination is required between the ATC and air force to prevent this in the future.

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Original NASA ASRS Text

Title: POTENTIAL CONFLICT.

Narrative: ZJX CLRNC WAS TO DSND TO 11000 FT AND BE BELOW 14000 FT BY CEW VOR. WE WERE ARRIVING FROM THE N (ATL FOR PENSACOLA (PNS). IN THE TURN OVER THE VOR TOWARD PENSI INTXN, OUT OF 12000 FT FOR 11000 FT, ZJX CALLED 12 O'CLOCK TFC NBOUND VFR AT 12.5 MI. SAW AN FGT SLIGHTLY HIGH MOVING L TO R FROM 12:30 TO 1 O'CLOCK POS IN OUR R TURN AS WE LEVELED AT 11000 FT. AT THIS POINT WE RECEIVED A TCASII RA COMMAND OF 'DSND.' WE BOTH (CAPT AND I) SIMULTANEOUSLY SAID 'VISUAL, NO CONFLICT' THINKING THE RA WAS FOR THE RPTED AND SIGHTED TFC. AT THIS POINT THE CAPT (LOOKING R ACROSS THE COCKPIT TOWARD THAT TFC AND INTO THE TURN) SPOTTED THE RED SYMBOL ON THE TCASII RADAR SCREEN SHOWING 11500 FT AT THE 10-11 O'CLOCK POS. HE THEN CALLED FOR DSCNT. AS I ESTABLISHED AN IDLE, SPD BRAKE DSCNT, THE SECOND FGT PASSED WITHIN 1/2 MI ACROSS OUR NOSE, L TO R, 500-700 FT HIGH AND APPARENTLY IN TRAIL AND SLIGHTLY BELOW THE LEAD. AT THE CESSATION OF THE RA COMMAND AND AFTER CLRING THE AREA VISUALLY AND VIA TCASII, WE RETURNED TO OUR ASSIGNED ALT OF 11000 FT. TOTAL ALTDEV WAS ONLY 300-400 FT VERTICALLY DUE TO THE SHORT DURATION OF THE AVOIDANCE MANEUVER. ONCE AGAIN I RELEARNED A LESSON I THOUGHT I WOULD NEVER NEGLECT AFTER 2 DECADES IN FIGHTER AVIATION -- 'ALWAYS CHK FOR THE TRAILER.' SUPPLEMENTAL INFORMATION FROM ACN 249718: THE FGT'S WERE UNDER EGLIN AFB CTL AND WERE SQUAWKING VFR CODES. BETTER COORD IS REQUIRED BTWN THE ATC AND AIR FORCE TO PREVENT THIS IN THE FUTURE.

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.