Air carrier X had less than standard separation from military Y. System error.

Attributes
ACN	178830
Time
Date	199105
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : bgr
State Reference	ME
Altitude	msl bound lower : 7000 msl bound upper : 7100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : bgr
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Experimental
Flight Phase	other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
ASRS Report	178830
Person 2
Affiliation	company : air carrier
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 other
Consequence	faa : investigated
Miss Distance	horizontal : 12000 vertical : 100
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Air carrier X was descending into bgr from the northeast. Military spc Y was holding on the bgr 140 degree radial at 5-30 DME, block 6000-9000. Air carrier X was descended to 3000. I tried to level air carrier X at 8000 when it was apparent they would conflict but air carrier X was out of 7500 and eventually to 7100 then back to 8000. Military Y was assigned 7000 when conflict was noticed. Headings were given, air carrier X did not receive the heading. Air carrier X finally saw military Y and continued into bgr to land. Supervisor and myself felt this should be investigated.

Original NASA ASRS Text

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

Narrative: ACR X WAS DSNDING INTO BGR FROM THE NE. MIL SPC Y WAS HOLDING ON THE BGR 140 DEG RADIAL AT 5-30 DME, BLOCK 6000-9000. ACR X WAS DSNDED TO 3000. I TRIED TO LEVEL ACR X AT 8000 WHEN IT WAS APPARENT THEY WOULD CONFLICT BUT ACR X WAS OUT OF 7500 AND EVENTUALLY TO 7100 THEN BACK TO 8000. MIL Y WAS ASSIGNED 7000 WHEN CONFLICT WAS NOTICED. HDGS WERE GIVEN, ACR X DID NOT RECEIVE THE HDG. ACR X FINALLY SAW MIL Y AND CONTINUED INTO BGR TO LAND. SUPVR AND MYSELF FELT THIS SHOULD BE INVESTIGATED.

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.