Air carrier X TCASII RA from ghost target.

Attributes
ACN	247011
Time
Date	199306
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : ord
State Reference	IL
Altitude	msl bound lower : 11000 msl bound upper : 11000
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
Person 1
Affiliation	government : faa
Function	other personnel other
Qualification	controller : radar
ASRS Report	247011
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Air carrier X asked the controller if he had traffic for him ahead. The controller advised that there was no traffic in vicinity close to his altitude. The pilot then advised that he had already climbed reacting to an RA. There was a clearance deviation from the TCASII aircraft of at least 1300 ft. Communications took place after the aircraft had already climbed. No traffic? No need for maneuver!

Original NASA ASRS Text

Title: ACR X TCASII RA FROM GHOST TARGET.

Narrative: ACR X ASKED THE CTLR IF HE HAD TFC FOR HIM AHEAD. THE CTLR ADVISED THAT THERE WAS NO TFC IN VICINITY CLOSE TO HIS ALT. THE PLT THEN ADVISED THAT HE HAD ALREADY CLBED REACTING TO AN RA. THERE WAS A CLRNC DEV FROM THE TCASII ACFT OF AT LEAST 1300 FT. COMS TOOK PLACE AFTER THE ACFT HAD ALREADY CLBED. NO TFC? NO NEED FOR MANEUVER!

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.