Air carrier has TCASII RA on initial climb. Responds but departure controller says no traffic there.

Attributes
ACN	223260
Time
Date	199210
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ont
State Reference	CA
Altitude	msl bound lower : 2000 msl bound upper : 2000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ont
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
ASRS Report	223260
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Flight departed ont. Aircraft checked in with departure control. Aircraft asked if we had traffic go underneath him as he was climbing out of 2000. ATC showed no traffic on radar. Aircraft was issued a climb RA by TCASII. This was a ghost target.

Original NASA ASRS Text

Title: ACR HAS TCASII RA ON INITIAL CLB. RESPONDS BUT DEP CTLR SAYS NO TFC THERE.

Narrative: FLT DEPARTED ONT. ACFT CHKED IN WITH DEP CTL. ACFT ASKED IF WE HAD TFC GO UNDERNEATH HIM AS HE WAS CLBING OUT OF 2000. ATC SHOWED NO TFC ON RADAR. ACFT WAS ISSUED A CLB RA BY TCASII. THIS WAS A GHOST TARGET.

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.