<< >> NASA ASRS Report 503710, March 2001

ZID controller involved with an operational error between A321 and carj due to incomplete coordination with adjoining ZID controller.

Attributes
ACN	503710
Time
Date	200103
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : ctw.vor
State Reference	OH
Altitude	msl bound lower : 20000 msl bound upper : 21000
Environment
Flight Conditions	IMC
Weather Elements	Turbulence
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zob.artcc artcc : zid.artcc tower : sdf.tower
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : enroute altitude change
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zob.artcc
Operator	common carrier : air carrier
Make Model Name	A321
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Route In Use	enroute other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller military : 8 controller radar : 21 controller time certified in position1 : 11
ASRS Report	503710
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	non adherence : required legal separation non adherence : published procedure
Independent Detector	atc equipment : conflict alert atc equipment other atc equipment : radar other controllera
Resolutory Action	controller : issued new clearance
Consequence	faa : investigated
Miss Distance	horizontal : 22200 vertical : 100
Supplementary
Problem Areas	ATC Human Performance FAA Weather
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error Inter Facility Coordination Failure

Narrative:

Aircraft #2 was pointed out to ZOB. ZOB controller advised 'pointout approved, miss the traffic you're giving me.' aircraft #2 was in conflict with another aircraft just to his north, converging. I vectored aircraft #2 behind this traffic, putting him in conflict with aircraft #1. Aircraft #1 was due to be descended into pit, but the last altitude verbally coordinated was FL210. I initiated coordination several times with the ZOB controller, but no calls were acknowledged. I stopped aircraft #2's climb at FL200. Aircraft #1 was descended by ZOB below FL210. 7110.65B is very unclr as to whether the receiving controller of a pointout can alter the heading or altitude of traffic that he is requiring the controller that initiated the pointout to separate. It's very hard to separate 2 aircraft when the aircraft is changing altitude and heading without coordination.

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Original NASA ASRS Text

Title: ZID CTLR INVOLVED WITH AN OPERROR BTWN A321 AND CARJ DUE TO INCOMPLETE COORD WITH ADJOINING ZID CTLR.

Narrative: ACFT #2 WAS POINTED OUT TO ZOB. ZOB CTLR ADVISED 'POINTOUT APPROVED, MISS THE TFC YOU'RE GIVING ME.' ACFT #2 WAS IN CONFLICT WITH ANOTHER ACFT JUST TO HIS N, CONVERGING. I VECTORED ACFT #2 BEHIND THIS TFC, PUTTING HIM IN CONFLICT WITH ACFT #1. ACFT #1 WAS DUE TO BE DSNDED INTO PIT, BUT THE LAST ALT VERBALLY COORDINATED WAS FL210. I INITIATED COORD SEVERAL TIMES WITH THE ZOB CTLR, BUT NO CALLS WERE ACKNOWLEDGED. I STOPPED ACFT #2'S CLB AT FL200. ACFT #1 WAS DSNDED BY ZOB BELOW FL210. 7110.65B IS VERY UNCLR AS TO WHETHER THE RECEIVING CTLR OF A POINTOUT CAN ALTER THE HDG OR ALT OF TFC THAT HE IS REQUIRING THE CTLR THAT INITIATED THE POINTOUT TO SEPARATE. IT'S VERY HARD TO SEPARATE 2 ACFT WHEN THE ACFT IS CHANGING ALT AND HDG WITHOUT COORD.

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.