Narrative:

(SR22) level at 7000 ft 30 miles nne of pns direct mgm. At xa:00, I issued traffic information on an aerobatic T-34 at 11 O'clock, four miles, 7000 ft, altitude changing rapidly, direction of flight unknown. Over the next five minutes, I issued traffic six times, two of the traffic alerts because the T-34's target was merging with that of the SR22. The SR22 deviated at least twice from his IFR assigned altitude in an attempt to avoid the T-34, which he could not see. The cirrus pilot visually acquired the T-34 when the T-34 was behind him and no longer a factor. The us military conducts aerobatic training just outside the three class 'C' airspace complexes in the pensacola area. Due to eglin air force base restricted area, pensacola TRACON controllers often have no choice but to vector civilian and commercial traffic directly into an area where aerobatic training is in progress. Occasionally the military pilots remain on the frequency for flight following during their aerobatics, but in my experience they are too busy maneuvering the aircraft to answer or acknowledge traffic calls. In the course of my many years as an air traffic controller here at pensacola TRACON, I can honestly say that this aerobatic training is the single most operationally stressful and procedurally dangerous situation that I have repeatedly encountered.

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Original NASA ASRS Text

Title: P31 APCH CTLR ISSUES SEVERAL TFC ADVISORIES TO A SR22 PLT IFR AT 7000 FT ON A T34 TFC CONDUCTING AEROBATIC TRAINING.

Narrative: (SR22) LEVEL AT 7000 FT 30 MILES NNE OF PNS DIRECT MGM. AT XA:00, I ISSUED TFC INFO ON AN AEROBATIC T-34 AT 11 O'CLOCK, FOUR MILES, 7000 FT, ALT CHANGING RAPIDLY, DIRECTION OF FLT UNKNOWN. OVER THE NEXT FIVE MINUTES, I ISSUED TFC SIX TIMES, TWO OF THE TFC ALERTS BECAUSE THE T-34'S TARGET WAS MERGING WITH THAT OF THE SR22. THE SR22 DEVIATED AT LEAST TWICE FROM HIS IFR ASSIGNED ALT IN AN ATTEMPT TO AVOID THE T-34, WHICH HE COULD NOT SEE. THE CIRRUS PLT VISUALLY ACQUIRED THE T-34 WHEN THE T-34 WAS BEHIND HIM AND NO LONGER A FACTOR. THE US MILITARY CONDUCTS AEROBATIC TRAINING JUST OUTSIDE THE THREE CLASS 'C' AIRSPACE COMPLEXES IN THE PENSACOLA AREA. DUE TO EGLIN AIR FORCE BASE RESTRICTED AREA, PENSACOLA TRACON CTLRS OFTEN HAVE NO CHOICE BUT TO VECTOR CIVILIAN AND COMMERCIAL TFC DIRECTLY INTO AN AREA WHERE AEROBATIC TRAINING IS IN PROGRESS. OCCASIONALLY THE MIL PLTS REMAIN ON THE FREQ FOR FLT FOLLOWING DURING THEIR AEROBATICS, BUT IN MY EXPERIENCE THEY ARE TOO BUSY MANEUVERING THE ACFT TO ANSWER OR ACKNOWLEDGE TFC CALLS. IN THE COURSE OF MY MANY YEARS AS AN AIR TFC CTLR HERE AT PENSACOLA TRACON, I CAN HONESTLY SAY THAT THIS AEROBATIC TRAINING IS THE SINGLE MOST OPERATIONALLY STRESSFUL AND PROCEDURALLY DANGEROUS SIT THAT I HAVE REPEATEDLY ENCOUNTERED.

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.