Air carrier X descent to occupied altitude TCASII TA RA descend had near midair collision less than ...

Attributes
ACN	205565
Time
Date	199203
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : bsy
State Reference	FL
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Flight Conditions	Mixed
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	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 8000 flight time type : 2800
ASRS Report	205565
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 6500 flight time type : 4000
ASRS Report	205592
Events
Anomaly	conflict : nmac non adherence : published procedure non adherence : required legal separation
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	faa : investigated
Miss Distance	horizontal : 100 vertical : 50
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Air carrier X was on approach to ft lauderdale and was being vectored off the honoe one arrival by miami approach control. ATC issued a vector off the arrival to a heading of 090, level at 8000 ft. Due to thundershower activity in the area we were unable to accept the heading of 090 and requested a vector to the west. ATC gave us a traffic report of an light transport at 11 O'clock, 7000 ft and issued a clearance for us to maintain visual separation and descend to 7000 ft. I advised ATC we would be unable to maintain visual contact with the light transport and received a clearance to descend to 7000 ft, turn right to heading 300. While in the descent TCASII issued a TA; then a RA on the light transport, showing him to be at 3 O'clock coalt 7000 ft and less than one mi converging. I questioned approach about the light transport's altitude and was told that they were at 6000 ft. I responded to ATC that we had a visual and would descend below the light transport per TCASII 'RA', (light transport was at 7000 ft). Miami approach control then gave us a clearance to descend to 5000 ft and to issue TA's with increasing intensity. (Out attention was on the light transport). The TCASII then issued a very intense RA; 'descend, descend now'; (we were level at 5000 heading 270). The TCASII vsi indicated a maximum rate descent with a target (red) on the radar at 12 O'clock less than 1/2 mi. Simultaneously we responded to the TCASII RA and made visual contact with the landing lights of a widebody transport (air carrier Y) at 12 O'clock less than a quarter of a mi an aggressive push over was made by the first officer on command and air carrier Y passed maybe 50 ft above and 100 ft to our left with minimal separation. I reported the near miss to miami approach control by stating 'you turned us right into air carrier Y.' air carrier Y flight responded with 'yes, we got a good look at you air carrier X.' the approach control supervisor immediately took over for ATC with a descent clearance to 4000 ft. A normal approach and landing at ft lauderdale followed.

Original NASA ASRS Text

Title: ACR X DSCNT TO OCCUPIED ALT TCASII TA RA DSND HAD NMAC LTSS FROM ACR Y. EVASIVE ACTION TAKEN. SYS ERROR.

Narrative: ACR X WAS ON APCH TO FT LAUDERDALE AND WAS BEING VECTORED OFF THE HONOE ONE ARR BY MIAMI APCH CTL. ATC ISSUED A VECTOR OFF THE ARR TO A HDG OF 090, LEVEL AT 8000 FT. DUE TO THUNDERSHOWER ACTIVITY IN THE AREA WE WERE UNABLE TO ACCEPT THE HDG OF 090 AND REQUESTED A VECTOR TO THE W. ATC GAVE US A TFC RPT OF AN LTT AT 11 O'CLOCK, 7000 FT AND ISSUED A CLRNC FOR US TO MAINTAIN VISUAL SEPARATION AND DSND TO 7000 FT. I ADVISED ATC WE WOULD BE UNABLE TO MAINTAIN VISUAL CONTACT WITH THE LTT AND RECEIVED A CLRNC TO DSND TO 7000 FT, TURN R TO HDG 300. WHILE IN THE DSCNT TCASII ISSUED A TA; THEN A RA ON THE LTT, SHOWING HIM TO BE AT 3 O'CLOCK COALT 7000 FT AND LESS THAN ONE MI CONVERGING. I QUESTIONED APCH ABOUT THE LTT'S ALT AND WAS TOLD THAT THEY WERE AT 6000 FT. I RESPONDED TO ATC THAT WE HAD A VISUAL AND WOULD DSND BELOW THE LTT PER TCASII 'RA', (LTT WAS AT 7000 FT). MIAMI APCH CTL THEN GAVE US A CLRNC TO DSND TO 5000 FT AND TO ISSUE TA'S WITH INCREASING INTENSITY. (OUT ATTN WAS ON THE LTT). THE TCASII THEN ISSUED A VERY INTENSE RA; 'DSND, DSND NOW'; (WE WERE LEVEL AT 5000 HDG 270). THE TCASII VSI INDICATED A MAX RATE DSCNT WITH A TARGET (RED) ON THE RADAR AT 12 O'CLOCK LESS THAN 1/2 MI. SIMULTANEOUSLY WE RESPONDED TO THE TCASII RA AND MADE VISUAL CONTACT WITH THE LNDG LIGHTS OF A WDB (ACR Y) AT 12 O'CLOCK LESS THAN A QUARTER OF A MI AN AGGRESSIVE PUSH OVER WAS MADE BY THE FO ON COMMAND AND ACR Y PASSED MAYBE 50 FT ABOVE AND 100 FT TO OUR L WITH MINIMAL SEPARATION. I RPTED THE NEAR MISS TO MIAMI APCH CTL BY STATING 'YOU TURNED US RIGHT INTO ACR Y.' ACR Y FLT RESPONDED WITH 'YES, WE GOT A GOOD LOOK AT YOU ACR X.' THE APCH CTL SUPVR IMMEDIATELY TOOK OVER FOR ATC WITH A DSCNT CLRNC TO 4000 FT. A NORMAL APCH AND LNDG AT FT LAUDERDALE FOLLOWED.

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.

Air carrier X descent to occupied altitude TCASII TA RA descend had near midair collision less than standard separation from air carrier Y. Evasive action taken. System error.