An air carrier medium large transport crew responded to a TCASII descend warning.

Attributes
ACN	223980
Time
Date	199210
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : fll
State Reference	FL
Altitude	msl bound lower : 5900 msl bound upper : 6000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : fll
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : commercial pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 7500 flight time type : 3500
ASRS Report	223980
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 10000 flight time type : 7000
ASRS Report	223982
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other

Narrative:

Climbing out of fll, passing through 6000 ft MSL, TCASII issued a descend RA. Captain, who was flying, immediately began a descent as instructed. As soon as the descent was initiated, the RA ceased and a climb was reinitiated. ATC was advised of the situation. At the time of the TA, TCASII was displaying a target 2000 ft below our altitude (blue symbol) and just prior to the RA another target appeared (yellow symbol) but the altitude was not determined as this target was only displayed for about 1 second. Both targets were displayed behind our aircraft at the time of the RA. Supplemental information from acn 223982: ATC stated that he only showed the 1 aircraft that was below us. We never saw any other aircraft and I'm not sure there ever was one.

Original NASA ASRS Text

Title: AN ACR MLG CREW RESPONDED TO A TCASII DSND WARNING.

Narrative: CLBING OUT OF FLL, PASSING THROUGH 6000 FT MSL, TCASII ISSUED A DSND RA. CAPT, WHO WAS FLYING, IMMEDIATELY BEGAN A DSCNT AS INSTRUCTED. AS SOON AS THE DSCNT WAS INITIATED, THE RA CEASED AND A CLB WAS REINITIATED. ATC WAS ADVISED OF THE SITUATION. AT THE TIME OF THE TA, TCASII WAS DISPLAYING A TARGET 2000 FT BELOW OUR ALT (BLUE SYMBOL) AND JUST PRIOR TO THE RA ANOTHER TARGET APPEARED (YELLOW SYMBOL) BUT THE ALT WAS NOT DETERMINED AS THIS TARGET WAS ONLY DISPLAYED FOR ABOUT 1 SECOND. BOTH TARGETS WERE DISPLAYED BEHIND OUR ACFT AT THE TIME OF THE RA. SUPPLEMENTAL INFO FROM ACN 223982: ATC STATED THAT HE ONLY SHOWED THE 1 ACFT THAT WAS BELOW US. WE NEVER SAW ANY OTHER ACFT AND I'M NOT SURE THERE EVER WAS ONE.

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.