Military fgt's had near midair collision less than standard separation from cpr Y. System error.

Attributes
ACN	198563
Time
Date	199201
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : far
State Reference	ND
Altitude	msl bound lower : 3500 msl bound upper : 3700
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : far tower : far
Operator	general aviation : corporate
Make Model Name	Fighter
Flight Phase	descent other
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Flight Phase	other
Flight Plan	VFR
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : radar
Experience	controller non radar : 1 controller radar : 3
ASRS Report	198563
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : developmental
Events
Anomaly	conflict : nmac non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	other
Consequence	faa : investigated
Miss Distance	horizontal : 6000 vertical : 200
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Intra Facility Coordination Failure Operational Error

Narrative:

On V192 I was instructing another controller on the local control position. On this occasion a pair of military fgt's were on a right downwind for runway 17 while a cpr Y was inbound from the northwest. The developmental told the fgt's to follow an air carrier on a 2-3 mi final for runway 17. The fgt's reported they had the air carrier in sight and would follow. At this time the developmental should also have told the fgt's about cpr Y jet to insure separation. At this time an inexperienced ground controller began to incessantly ask us to get on runways with vehicles. This caused us to divert our attention from the impending situation. The fgt's went underneath cpr Y and questioned us about the traffic. They later said they were 500 ft below cpr Y which is adequate separation. Also with our attention diverted we didn't point out the fgt's to approach control. We were under the assumption the fgt's would turn into the airport before leaving the air traffic area. Callback conversation with reporter revealed the following information. The reporter stated he had told the approach controller he was going to put the fgt's between the air carrier and cpr Y. Traffic was issued to both aircraft when they were 1 mi apart and 200 ft. Both aircraft were in the arsa. Visual separation was not applied. Near midair collision and system error was filed. Cpr Y took evasive action.

Original NASA ASRS Text

Title: MIL FGT'S HAD NMAC LTSS FROM CPR Y. SYS ERROR.

Narrative: ON V192 I WAS INSTRUCTING ANOTHER CTLR ON THE LCL CTL POS. ON THIS OCCASION A PAIR OF MIL FGT'S WERE ON A R DOWNWIND FOR RWY 17 WHILE A CPR Y WAS INBOUND FROM THE NW. THE DEVELOPMENTAL TOLD THE FGT'S TO FOLLOW AN ACR ON A 2-3 MI FINAL FOR RWY 17. THE FGT'S RPTED THEY HAD THE ACR IN SIGHT AND WOULD FOLLOW. AT THIS TIME THE DEVELOPMENTAL SHOULD ALSO HAVE TOLD THE FGT'S ABOUT CPR Y JET TO INSURE SEPARATION. AT THIS TIME AN INEXPERIENCED GND CTLR BEGAN TO INCESSANTLY ASK US TO GET ON RWYS WITH VEHICLES. THIS CAUSED US TO DIVERT OUR ATTN FROM THE IMPENDING SITUATION. THE FGT'S WENT UNDERNEATH CPR Y AND QUESTIONED US ABOUT THE TFC. THEY LATER SAID THEY WERE 500 FT BELOW CPR Y WHICH IS ADEQUATE SEPARATION. ALSO WITH OUR ATTN DIVERTED WE DIDN'T POINT OUT THE FGT'S TO APCH CTL. WE WERE UNDER THE ASSUMPTION THE FGT'S WOULD TURN INTO THE ARPT BEFORE LEAVING THE ATA. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO. THE RPTR STATED HE HAD TOLD THE APCH CTLR HE WAS GOING TO PUT THE FGT'S BTWN THE ACR AND CPR Y. TFC WAS ISSUED TO BOTH ACFT WHEN THEY WERE 1 MI APART AND 200 FT. BOTH ACFT WERE IN THE ARSA. VISUAL SEPARATION WAS NOT APPLIED. NMAC AND SYS ERROR WAS FILED. CPR Y TOOK EVASIVE ACTION.

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.