Near midair collision between an air carrier SF340 descending through 8000 ft to pns and a military T34 climbing out from nse and turning into the on coming SF340. The SF340 took evasive action turning away from the T34.

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Attributes
ACN	473746
Time
Date	200005
Day	Fri
Local Time Of Day	0601 To 1200
Place
State Reference	FL
Altitude	msl single value : 8000
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : p31.tracon
Operator	common carrier : air carrier
Make Model Name	SF 340A
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : vacating altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : p31.tracon
Operator	other
Make Model Name	Mentor (T-34)
Operating Under FAR Part	Part 91
Flight Phase	climbout : vacating altitude
Flight Plan	None
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
ASRS Report	473746
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne critical conflict : nmac other anomaly other
Independent Detector	atc equipment : conflict alert atc equipment other atc equipment : radar other controllera other flight crewa
Resolutory Action	controller : issued alert flight crew : took evasive action
Miss Distance	horizontal : 10 vertical : 10
Supplementary
Problem Areas	Flight Crew Human Performance Airspace Structure
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
ATC Facility	procedure or policy : p31.tracon

Narrative:

Air carrier X, SF340, inbound to pns was descending to 8000 ft. The military T34 departed nse to the north and terminated radar service. Air carrier X was issued traffic and safety alert. The T34 climb into the SF340. When the SF340 turned right to avoid the T34, the T34 appeared to have turned left into the SF340. The pilot of air carrier X then advised they were turning back to the left, to avoid the T34. The radar targets merged at the same altitude. It is my understanding that these military T34's are equipped with their version of TCASII. Even though these are training flts, the instructor pilots have the responsibility to maintain due diligence regarding the safety of flight. This is a persistent problem in this airspace.

Original NASA ASRS Text

Title: NMAC BTWN AN ACR SF340 DSNDING THROUGH 8000 FT TO PNS AND A MIL T34 CLBING OUT FROM NSE AND TURNING INTO THE ON COMING SF340. THE SF340 TOOK EVASIVE ACTION TURNING AWAY FROM THE T34.

Narrative: ACR X, SF340, INBOUND TO PNS WAS DSNDING TO 8000 FT. THE MIL T34 DEPARTED NSE TO THE N AND TERMINATED RADAR SVC. ACR X WAS ISSUED TFC AND SAFETY ALERT. THE T34 CLB INTO THE SF340. WHEN THE SF340 TURNED R TO AVOID THE T34, THE T34 APPEARED TO HAVE TURNED L INTO THE SF340. THE PLT OF ACR X THEN ADVISED THEY WERE TURNING BACK TO THE L, TO AVOID THE T34. THE RADAR TARGETS MERGED AT THE SAME ALT. IT IS MY UNDERSTANDING THAT THESE MIL T34'S ARE EQUIPPED WITH THEIR VERSION OF TCASII. EVEN THOUGH THESE ARE TRAINING FLTS, THE INSTRUCTOR PLTS HAVE THE RESPONSIBILITY TO MAINTAIN DUE DILIGENCE REGARDING THE SAFETY OF FLT. THIS IS A PERSISTENT PROB IN THIS AIRSPACE.

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.