Narrative:

I was working P31's east radar combined up with arrivals to 25. From the runway out to eglin's restricted area there is around 14 miles to work with. There were two instances in the same session where airliners received RA's due to close proximity to non-identified targets within the arrival corridor. [In the] first instance; traffic was working over top nse around 4;200 ft; my inbound was routed for a right base descending to 6;000 for the sequence into pns runway 26 which is a rapid drop to be able to get traffic low enough to make the runway you must step the down. The target climbed up rapidly through 5;000 and I had given numerous traffic calls to the inbound and he was looking for him but still received an RA after picking up the traffic in sight. Another similar situation was multiple inbounds for the downwind to runway 26 at pns with traffic northbound between pns and vps boundary at all altitudes. I was forced to send traffic east for descent and while turning inside the non-identified target for a right base the airliner received an RA. Neither aircraft maneuvered to miss any traffic they only reported receiving an RA. Recommendation; it is a serious problem with the amount of training aircraft in P31 airspace. These non-tagged unverified altitudes and not sure where they will go aircraft cause trouble for running a safe operation. The military training planes are very high performance and can climb; descend; and turn at a blink of an eye. I would recommend they do not work so closely to the class C airspace near pns; nse; and npa. It would be nice to have more corridors they can use so that we are not guessing where they are going to go.

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Original NASA ASRS Text

Title: P51 Controller reported several TCAS RA events involving PNS Air Carrier arrivals and military training aircraft; the reporter emphasizing the serious safety issue of this on-going problem.

Narrative: I was working P31's East RADAR combined up with arrivals to 25. From the runway out to Eglin's restricted area there is around 14 miles to work with. There were two instances in the same session where airliners received RA's due to close proximity to non-identified targets within the arrival corridor. [In the] first instance; traffic was working over top NSE around 4;200 FT; my inbound was routed for a right base descending to 6;000 for the sequence into PNS Runway 26 which is a rapid drop to be able to get traffic low enough to make the runway you must step the down. The target climbed up rapidly through 5;000 and I had given numerous traffic calls to the inbound and he was looking for him but still received an RA after picking up the traffic in sight. Another similar situation was multiple inbounds for the downwind to Runway 26 at PNS with traffic northbound between PNS and VPS boundary at all altitudes. I was forced to send traffic east for descent and while turning inside the non-identified target for a right base the airliner received an RA. Neither aircraft maneuvered to miss any traffic they only reported receiving an RA. Recommendation; It is a serious problem with the amount of Training Aircraft in P31 airspace. These non-tagged unverified altitudes and not sure where they will go aircraft cause trouble for running a safe operation. The military training planes are very high performance and can climb; descend; and turn at a blink of an eye. I would recommend they do not work so closely to the Class C airspace near PNS; NSE; and NPA. It would be nice to have more corridors they can use so that we are not guessing where they are going to go.

Data retrieved from NASA's ASRS site as of April 2012 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.