Air carrier X TCASII RA with Y refused clearance possibly had less than standard separation.

Attributes
ACN	247281
Time
Date	199305
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : ord
State Reference	IL
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ord
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	other personnel other
Qualification	controller : radar
ASRS Report	247281
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller radar : 6
Events
Anomaly	non adherence : required legal separation non adherence : far non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera
Resolutory Action	controller : issued new clearance
Consequence	Other
Miss Distance	horizontal : 17000 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

This controller was working air carrier X sbound. Air carrier X had traffic Y 12 O'clock and 4 mi. The controller issued a heading of 240 degrees to ensure separation. Air carrier X replied, unable due to a TCASII RA. The controller felt that separation may have been lost due to air carrier X not complying with control instructions. If the aircraft would have complied with the controller's instructions, there would never have been a possibility of a conflict.

Original NASA ASRS Text

Title: ACR X TCASII RA WITH Y REFUSED CLRNC POSSIBLY HAD LTSS.

Narrative: THIS CTLR WAS WORKING ACR X SBOUND. ACR X HAD TFC Y 12 O'CLOCK AND 4 MI. THE CTLR ISSUED A HDG OF 240 DEGS TO ENSURE SEPARATION. ACR X REPLIED, UNABLE DUE TO A TCASII RA. THE CTLR FELT THAT SEPARATION MAY HAVE BEEN LOST DUE TO ACR X NOT COMPLYING WITH CTL INSTRUCTIONS. IF THE ACFT WOULD HAVE COMPLIED WITH THE CTLR'S INSTRUCTIONS, THERE WOULD NEVER HAVE BEEN A POSSIBILITY OF A CONFLICT.

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.