Cpr X had less than standard separation from air carrier Y. System error.

Attributes
ACN	202499
Time
Date	199202
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : bsy
State Reference	FL
Altitude	msl bound lower : 16000 msl bound upper : 16000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zma
Operator	general aviation : corporate
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
ASRS Report	202499
Person 2
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	Other
Miss Distance	horizontal : 18000 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

I had 3 aircraft inbound to mia (cpr X, 2 mlgs). I had vectored the cpr X and 1 medium large transport to a heading 270 to get them out of the way and the first air carrier Y went by. I later put the cpr X on a heading 340 and then 350, both level at 16000 ft, to put him intrail behind the air carrier Y. Neither vector worked. The cpr X overtook the first air carrier Y. I turned cpr X 360 degrees left and the final distance (closest) was 3.0 NM. The sector during this time was quite busy and there was also another aircraft attempting to talk to me on at least 6 occasions. He could not hear me and blocked the frequency at the most inopportune times.

Original NASA ASRS Text

Title: CPR X HAD LTSS FROM ACR Y. SYS ERROR.

Narrative: I HAD 3 ACFT INBOUND TO MIA (CPR X, 2 MLGS). I HAD VECTORED THE CPR X AND 1 MLG TO A HDG 270 TO GET THEM OUT OF THE WAY AND THE FIRST ACR Y WENT BY. I LATER PUT THE CPR X ON A HDG 340 AND THEN 350, BOTH LEVEL AT 16000 FT, TO PUT HIM INTRAIL BEHIND THE ACR Y. NEITHER VECTOR WORKED. THE CPR X OVERTOOK THE FIRST ACR Y. I TURNED CPR X 360 DEGS L AND THE FINAL DISTANCE (CLOSEST) WAS 3.0 NM. THE SECTOR DURING THIS TIME WAS QUITE BUSY AND THERE WAS ALSO ANOTHER ACFT ATTEMPTING TO TALK TO ME ON AT LEAST 6 OCCASIONS. HE COULD NOT HEAR ME AND BLOCKED THE FREQ AT THE MOST INOPPORTUNE TIMES.

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.