Air carrier X TCASII RA with air carrier Y evasive action descend and turn. Non adherence to ATC cle...

Attributes
ACN	268778
Time
Date	199404
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : mia
State Reference	FL
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mia artcc : zny
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
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	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other
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 : 110 flight time total : 13000 flight time type : 1000
ASRS Report	268778
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other spatial deviation
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 6000 vertical : 800
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

The first officer was flying (air carrier X - 757). We were being vectored at 4000 ft for a turn to intercept the ILS to runway 12 at mia. As we began our turn to intercept the localizer, we saw another aircraft (air carrier Y). Y was displayed on our TCASII and we received a TA with an indication of the same altitude. We checked visually for a collision course. As I was about to order a turn to the right away from the aircraft, we received an RA from TCASII indicating a climb. I ordered a turn and a climb to follow the RA escape maneuver. We called ATC about the conflict and were vectored back for the approach for 12. The reason for the conflict is unknown even after talking to ATC on the phone after landing.

Original NASA ASRS Text

Title: ACR X TCASII RA WITH ACR Y EVASIVE ACTION DSND AND TURN. NON ADHERENCE TO ATC CLRNC.

Narrative: THE FO WAS FLYING (ACR X - 757). WE WERE BEING VECTORED AT 4000 FT FOR A TURN TO INTERCEPT THE ILS TO RWY 12 AT MIA. AS WE BEGAN OUR TURN TO INTERCEPT THE LOC, WE SAW ANOTHER ACFT (ACR Y). Y WAS DISPLAYED ON OUR TCASII AND WE RECEIVED A TA WITH AN INDICATION OF THE SAME ALT. WE CHKED VISUALLY FOR A COLLISION COURSE. AS I WAS ABOUT TO ORDER A TURN TO THE R AWAY FROM THE ACFT, WE RECEIVED AN RA FROM TCASII INDICATING A CLB. I ORDERED A TURN AND A CLB TO FOLLOW THE RA ESCAPE MANEUVER. WE CALLED ATC ABOUT THE CONFLICT AND WERE VECTORED BACK FOR THE APCH FOR 12. THE REASON FOR THE CONFLICT IS UNKNOWN EVEN AFTER TALKING TO ATC ON THE PHONE AFTER 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.

Air carrier X TCASII RA with air carrier Y evasive action descend and turn. Non adherence to ATC clearance.