After conflict alert activates, ZDC controller takes action to separate 2 aircraft at FL310.

Attributes
ACN	508898
Time
Date	200104
Day	Tue
Local Time Of Day	1201 To 1800
Place
State Reference	VA
Altitude	msl single value : 31000
Aircraft 1
Controlling Facilities	artcc : zdc.artcc
Operator	common carrier : air carrier
Make Model Name	A319
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	cruise : enroute altitude change
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zdc.artcc
Operator	general aviation : corporate
Make Model Name	Citation III, VI, VII
Operating Under FAR Part	Part 91
Navigation In Use	other vortac
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 18 controller time certified in position1 : 1.5
ASRS Report	508898
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 160 flight time total : 14000 flight time type : 800
ASRS Report	508477
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation non adherence : published procedure
Independent Detector	atc equipment : conflict alert aircraft equipment : tcas other other : conflict alert
Resolutory Action	controller : issued new clearance flight crew : returned to original clearance flight crew : took precautionary avoidance action
Consequence	faa : investigated
Miss Distance	horizontal : 12000 vertical : 400
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

I climbed air carrier X (A319) to miss another aircraft, but climbed him into another aircraft. The conflict alert activated before I saw it. Supplemental information from acn 508477: at FL310, we were issued an immediate left turn to heading 360 degrees approximately 90 degrees from our jetway. While in turn, we noticed a TCASII target at our 6 O'clock position at the same FL310. No TCASII TA's or RA's were commanded. Once separation was regained we were cleared on course. We requested a verbal explanation and none was given!

Original NASA ASRS Text

Title: AFTER CONFLICT ALERT ACTIVATES, ZDC CTLR TAKES ACTION TO SEPARATE 2 ACFT AT FL310.

Narrative: I CLBED ACR X (A319) TO MISS ANOTHER ACFT, BUT CLBED HIM INTO ANOTHER ACFT. THE CONFLICT ALERT ACTIVATED BEFORE I SAW IT. SUPPLEMENTAL INFO FROM ACN 508477: AT FL310, WE WERE ISSUED AN IMMEDIATE L TURN TO HDG 360 DEGS APPROX 90 DEGS FROM OUR JETWAY. WHILE IN TURN, WE NOTICED A TCASII TARGET AT OUR 6 O'CLOCK POS AT THE SAME FL310. NO TCASII TA'S OR RA'S WERE COMMANDED. ONCE SEPARATION WAS REGAINED WE WERE CLRED ON COURSE. WE REQUESTED A VERBAL EXPLANATION AND NONE WAS GIVEN!

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.