<< >> NASA ASRS Report 560210, September 2002

ZKC instructor with student have slow overtake situation with 2 air carrier aircraft at cruise that results in an unsuccessful resolution.

Attributes
ACN	560210
Time
Date	200209
Day	Fri
Local Time Of Day	0001 To 0600
Place
Locale Reference	navaid : stl.vortac
State Reference	MO
Altitude	msl single value : 37000
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Controlling Facilities	artcc : zkc.artcc
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zkc.artcc
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : supervisor controller : radar
Qualification	controller : radar
Experience	controller non radar : 20 controller radar : 20 controller supervisory : 1.5 controller time certified in position1 : 4.41
ASRS Report	560210
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : developmental
Experience	controller radar : 15
ASRS Report	560211
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation non adherence : published procedure
Independent Detector	atc equipment : conflict alert atc equipment other atc equipment : radar other controllera other controllerb other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance none taken : detected after the fact
Consequence	faa : investigated
Miss Distance	horizontal : 21600 vertical : 1100
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

2 aircraft slowly coming together, turned one 15 degrees left, aircraft picked up 20 KTS, turned aircraft another 30 degrees left continued to pick up speed. Climbed aircraft and turned back right 70 degrees, turned other aircraft 30 degrees left to increase separation. Lost separation.

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Original NASA ASRS Text

Title: ZKC INSTRUCTOR WITH STUDENT HAVE SLOW OVERTAKE SIT WITH 2 ACR ACFT AT CRUISE THAT RESULTS IN AN UNSUCCESSFUL RESOLUTION.

Narrative: 2 ACFT SLOWLY COMING TOGETHER, TURNED ONE 15 DEGS L, ACFT PICKED UP 20 KTS, TURNED ACFT ANOTHER 30 DEGS L CONTINUED TO PICK UP SPD. CLBED ACFT AND TURNED BACK R 70 DEGS, TURNED OTHER ACFT 30 DEGS L TO INCREASE SEPARATION. LOST SEPARATION.

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.