Loss of standard separation between MD80 and FA20.

Attributes
ACN	462496
Time
Date	200002
Day	Fri
Local Time Of Day	1201 To 1800
Place
State Reference	WV
Altitude	msl bound lower : 33000 msl bound upper : 33900
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid.artcc
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zid.artcc
Operator	general aviation : corporate
Make Model Name	Falcon 20FJF/20C/20D/20E/20F
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : supervisor oversight : supervisor
Qualification	controller : radar
Experience	controller time certified in position1 : 30
ASRS Report	462496
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	conflict : airborne critical non adherence : required legal separation non adherence : published procedure
Independent Detector	atc equipment : conflict alert atc equipment other atc equipment : edp aircraft equipment : tcas other controllera other controllerb other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action flight crew : returned to assigned altitude none taken : insufficient time
Consequence	faa : investigated
Miss Distance	horizontal : 9000 vertical : 700
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Sector was moderately busy. Handoff tracker assigned to sector. Separation plan of radar controller changed several times, resulting in less than standard separation. Some sector confusion was evident from sector recording. Supplemental information from acn 462938: at FL330 on a vector from ATC for traffic, got TCASII RA, followed rapidly by RA climb now, captain, PF, responded. PNF informed ATC, gave us immediate clearance to FL350. With clearance, returned to FL330 for remainder of flight.

Original NASA ASRS Text

Title: LOSS OF STANDARD SEPARATION BTWN MD80 AND FA20.

Narrative: SECTOR WAS MODERATELY BUSY. HDOF TRACKER ASSIGNED TO SECTOR. SEPARATION PLAN OF RADAR CTLR CHANGED SEVERAL TIMES, RESULTING IN LTSS. SOME SECTOR CONFUSION WAS EVIDENT FROM SECTOR RECORDING. SUPPLEMENTAL INFO FROM ACN 462938: AT FL330 ON A VECTOR FROM ATC FOR TFC, GOT TCASII RA, FOLLOWED RAPIDLY BY RA CLB NOW, CAPT, PF, RESPONDED. PNF INFORMED ATC, GAVE US IMMEDIATE CLRNC TO FL350. WITH CLRNC, RETURNED TO FL330 FOR REMAINDER OF FLT.

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.