TCASII RA received on short final on approach to multiple runway operation parallel runways.

Attributes
ACN	243872
Time
Date	199306
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mco
State Reference	FL
Altitude	msl bound lower : 1200 msl bound upper : 1500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mco
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent : approach
Route In Use	approach : straight in
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : flight engineer
Experience	flight time last 90 days : 210 flight time total : 8000 flight time type : 1400
ASRS Report	243872
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 105 flight time total : 17000 flight time type : 105
ASRS Report	244118
Events
Anomaly	aircraft equipment problem : less severe conflict : airborne less severe non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	none taken : insufficient time
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

On short final to ILS 17 mco we experienced an intermittent TCASII RA. Before evasive action could be taken, system reported 'clear of conflict.' this happened twice more in a fairly short time interval. TCASII system showed a target behind aircraft (near a small GA airport). Controller painted no other traffic near our aircraft except for one aircraft on final to west complex of airport. Because controller showed no traffic, we had no visual conflict and TCASII advisory cleared itself, we continued to an uneventful landing.

Original NASA ASRS Text

Title: TCASII RA RECEIVED ON SHORT FINAL ON APCH TO MULTIPLE RWY OP PARALLEL RWYS.

Narrative: ON SHORT FINAL TO ILS 17 MCO WE EXPERIENCED AN INTERMITTENT TCASII RA. BEFORE EVASIVE ACTION COULD BE TAKEN, SYS RPTED 'CLR OF CONFLICT.' THIS HAPPENED TWICE MORE IN A FAIRLY SHORT TIME INTERVAL. TCASII SYS SHOWED A TARGET BEHIND ACFT (NEAR A SMALL GA ARPT). CTLR PAINTED NO OTHER TFC NEAR OUR ACFT EXCEPT FOR ONE ACFT ON FINAL TO W COMPLEX OF ARPT. BECAUSE CTLR SHOWED NO TFC, WE HAD NO VISUAL CONFLICT AND TCASII ADVISORY CLRED ITSELF, WE CONTINUED TO AN UNEVENTFUL LNDG.

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.