<< >> NASA ASRS Report 1263108, May 2015

An aircraft on downwind vectors for mem runway 18C took evasive action to a TCAS near miss at 3;000 feet.

Attributes
ACN	1263108
Time
Date	201505
Local Time Of Day	1201-1800
Place
Locale Reference	MEM.Airport
State Reference	TN
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Medium Transport
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Route In Use	Vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 50 Flight Crew Total 22000 Flight Crew Type 4000
Events
Anomaly	ATC Issue All Types Conflict NMAC Deviation - Procedural Published Material / Policy
Miss Distance	Horizontal 0 Vertical 200

Narrative:

At 3;000 feet MSL we were being vectored from downwind to base for Runway18C at mem. ATC advised us of traffic at 1;100 feet without comment of its altitude. We identified the traffic on TCAS and scanned externally to attain visual reference. We had not established visual reference with the traffic before the TCAS gave us a climb RA. I adived ATC of our RA responce. As we responded to the climb command I witnessed the traffic pass below us undicating -200 feet on the TCAS display. Once clear of conflict we returned to altitude and proceeded with the approach.no comment from ATC.

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Original NASA ASRS Text

Title: An aircraft on downwind vectors for MEM Runway 18C took evasive action to a TCAS near miss at 3;000 feet.

Narrative: At 3;000 feet MSL we were being vectored from downwind to base for Runway18C at MEM. ATC advised us of traffic at 1;100 feet without comment of its altitude. We identified the traffic on TCAS and scanned externally to attain visual reference. We had not established visual reference with the traffic before the TCAS gave us a climb RA. I adived ATC of our RA responce. As we responded to the climb command I witnessed the traffic pass below us undicating -200 feet on the TCAS display. Once clear of conflict we returned to altitude and proceeded with the approach.No comment from ATC.

Data retrieved from NASA's ASRS site 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.