Air carrier X TCASII RA descend had near midair collision with aircraft Y. Evasive action taken.

Attributes
ACN	211145
Time
Date	199205
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : fll
State Reference	FL
Altitude	msl bound lower : 2300 msl bound upper : 2300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mia
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	cruise other
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 8000 flight time type : 100
ASRS Report	211144
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 10000 flight time type : 2000
ASRS Report	212428
Events
Anomaly	conflict : nmac non adherence : published procedure
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 200 vertical : 200
Supplementary
Primary Problem	ATC Human Performance

Narrative:

After takeoff from fll switched to mia climbing to 3000 ft. Passed over traffic below. TCASII was saying monitor vertical. Seconds later, TCASII said descend descend now. We were clear of traffic below and now at 2300 ft we saw a twin engine aircraft at 11 O'clock and 200 ft up. Pushed forward on controls. At this time, mia said level at 2000 you have VFR traffic at 2500 ft.

Original NASA ASRS Text

Title: ACR X TCASII RA DSND HAD NMAC WITH ACFT Y. EVASIVE ACTION TAKEN.

Narrative: AFTER TKOF FROM FLL SWITCHED TO MIA CLBING TO 3000 FT. PASSED OVER TFC BELOW. TCASII WAS SAYING MONITOR VERT. SECONDS LATER, TCASII SAID DSND DSND NOW. WE WERE CLR OF TFC BELOW AND NOW AT 2300 FT WE SAW A TWIN ENG ACFT AT 11 O'CLOCK AND 200 FT UP. PUSHED FORWARD ON CTLS. AT THIS TIME, MIA SAID LEVEL AT 2000 YOU HAVE VFR TFC AT 2500 FT.

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.