Narrative:

Around the 500 ft callout, TCASII issued an RA target on top of us at 600 ft. No TA was given. At that time a reduced descent was aurally and visually displayed. We pitched up to about 2 dots above GS and then received an all clear. Landed without incident. Tower reported traffic 1-2 mi, 3 oþclock, 600 ft -- a helicopter. RA was an erroneous, unneeded, distracting element at 500 ft on approach to landing. At the most important time during an approach, where all attention should be given to landing, we were all disrupted looking for a serious RA threat that did not exist. No TA was given. Suggest shutting down TCASII OM inbound.

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Original NASA ASRS Text

Title: WDB ACR ACFT BRIEFLY STOPPED FS APCH DSCNT AFTER RECEIVING AN UNWARRANTED TCASII RA.

Narrative: AROUND THE 500 FT CALLOUT, TCASII ISSUED AN RA TARGET ON TOP OF US AT 600 FT. NO TA WAS GIVEN. AT THAT TIME A REDUCED DSCNT WAS AURALLY AND VISUALLY DISPLAYED. WE PITCHED UP TO ABOUT 2 DOTS ABOVE GS AND THEN RECEIVED AN ALL CLR. LANDED WITHOUT INCIDENT. TWR RPTED TFC 1-2 MI, 3 OþCLOCK, 600 FT -- A HELI. RA WAS AN ERRONEOUS, UNNEEDED, DISTRACTING ELEMENT AT 500 FT ON APCH TO LNDG. AT THE MOST IMPORTANT TIME DURING AN APCH, WHERE ALL ATTN SHOULD BE GIVEN TO LNDG, WE WERE ALL DISRUPTED LOOKING FOR A SERIOUS RA THREAT THAT DID NOT EXIST. NO TA WAS GIVEN. SUGGEST SHUTTING DOWN TCASII OM INBOUND.

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.