<< >> NASA ASRS Report 465573, March 2000

ZOB ARTCC controller is late turning and climbing a descending aircraft away from conflicting traffic resulting in a loss of separation.

Attributes
ACN	465573
Time
Date	200003
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : jot.vortac
State Reference	IL
Altitude	agl bound lower : 39 agl bound upper : 14000 agl single value : 40
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zau.artcc tower : mkl.tower
Operator	general aviation : corporate
Make Model Name	Citation I
Operating Under FAR Part	Part 91
Flight Phase	descent : vacating altitude
Route In Use	arrival : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zau.artcc
Operator	general aviation : personal
Make Model Name	Falcon 20FJF/20C/20D/20E/20F
Operating Under FAR Part	Part 91
Flight Phase	descent : vacating altitude
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 13
ASRS Report	465573
Person 2
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : published procedure
Independent Detector	other controllera
Resolutory Action	none taken : insufficient time
Miss Distance	horizontal : 24600 vertical : 700
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

I turned aircraft #1 40 degrees right of course to achieve lateral separation. At point I realized did not have lateral separation, I amended aircraft #1 altitude to maintain vertical 14000 ft. Aircraft #1 descended to 13700 ft before returning to 14000 ft. My perception of turn needed was off (lateral) and my corrective actions were late (vertical).

Related reports:

• ZOB radar controller failed to observe conflicting traffic r...
• Ind TRACON controller reported that a trainee ignored their ...
• ZDC radar controller was late turning air carrier away from ...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: ZOB ARTCC CTLR IS LATE TURNING AND CLBING A DSNDING ACFT AWAY FROM CONFLICTING TFC RESULTING IN A LOSS OF SEPARATION.

Narrative: I TURNED ACFT #1 40 DEGS R OF COURSE TO ACHIEVE LATERAL SEPARATION. AT POINT I REALIZED DID NOT HAVE LATERAL SEPARATION, I AMENDED ACFT #1 ALT TO MAINTAIN VERT 14000 FT. ACFT #1 DSNDED TO 13700 FT BEFORE RETURNING TO 14000 FT. MY PERCEPTION OF TURN NEEDED WAS OFF (LATERAL) AND MY CORRECTIVE ACTIONS WERE LATE (VERT).

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.