Air carrier X had near midair collision less than standard separation from Y. System error.

Attributes
ACN	236137
Time
Date	199303
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : fll
State Reference	FL
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mia
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Navigation In Use	Other Other
Flight Phase	descent : approach descent other
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 280 flight time total : 11000 flight time type : 280
ASRS Report	236137
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 10000 flight time type : 2000
ASRS Report	236138
Events
Anomaly	conflict : nmac non adherence : published procedure non adherence : required legal separation other anomaly
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	faa : investigated
Miss Distance	horizontal : 200
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Air carrier X on localizer runway 9L fll 170 KTS 4000 ft tracking inbound were asked if we saw traffic Y ahead 3 mi on localizer. We stated we could not identify due to clouds in the area. Few minutes went by then ATC told us to slow to 150 KTS descend to 2000 ft cleared for the approach. We were already above GS when cleared for approach. Next, the controller (new controller) asked if we saw traffic Y 11 O'clock and a mi. We stated no. He then turned us off localizer. We then saw the traffic Y, increased our bank to avoid, missed by about 200 ft. Supplemental information from acn 236138: ATC instructed us to slow to 150 KTS descend to 2000 ft and cleared for ILS 9L fll. We were well above GS. The supervising controller then instructed us to turn to heading 060 degrees due to traffic 1 mi ahead at 4000 ft. We turned to 060 degrees and traffic passed us on right side approximately 200 ft distance. We were held high and slowed down to accommodate an aircraft being turned onto the localizer ahead of us.

Original NASA ASRS Text

Title: ACR X HAD NMAC LTSS FROM Y. SYS ERROR.

Narrative: ACR X ON LOC RWY 9L FLL 170 KTS 4000 FT TRACKING INBOUND WERE ASKED IF WE SAW TFC Y AHEAD 3 MI ON LOC. WE STATED WE COULD NOT IDENT DUE TO CLOUDS IN THE AREA. FEW MINUTES WENT BY THEN ATC TOLD US TO SLOW TO 150 KTS DSND TO 2000 FT CLRED FOR THE APCH. WE WERE ALREADY ABOVE GS WHEN CLRED FOR APCH. NEXT, THE CTLR (NEW CTLR) ASKED IF WE SAW TFC Y 11 O'CLOCK AND A MI. WE STATED NO. HE THEN TURNED US OFF LOC. WE THEN SAW THE TFC Y, INCREASED OUR BANK TO AVOID, MISSED BY ABOUT 200 FT. SUPPLEMENTAL INFO FROM ACN 236138: ATC INSTRUCTED US TO SLOW TO 150 KTS DSND TO 2000 FT AND CLRED FOR ILS 9L FLL. WE WERE WELL ABOVE GS. THE SUPERVISING CTLR THEN INSTRUCTED US TO TURN TO HDG 060 DEGS DUE TO TFC 1 MI AHEAD AT 4000 FT. WE TURNED TO 060 DEGS AND TFC PASSED US ON R SIDE APPROX 200 FT DISTANCE. WE WERE HELD HIGH AND SLOWED DOWN TO ACCOMMODATE AN ACFT BEING TURNED ONTO THE LOC AHEAD OF US.

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.