LR45 captain reported receiving an RA approaching dal airport.

Attributes
ACN	1297343
Time
Date	201509
Local Time Of Day	1201-1800
Place
Locale Reference	DAL.Airport
State Reference	TX
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Learjet 45
Operating Under FAR Part	Part 135
Flight Phase	Initial Approach
Route In Use	Vectors Visual Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Plan	VFR
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 100 Flight Crew Total 9000 Flight Crew Type 425
Events
Anomaly	Conflict Airborne Conflict
Miss Distance	Horizontal 500 Vertical 400

Narrative:

While being vectored for a visual approach to runway 13L at dal; the crew was informed from regional approach that a VFR traffic was below us at our 1 o'clock. Our altitude was 3;000 MSL. We looked for that traffic but did not see it as it blended with the landscape below. As the traffic approached our position; the TCAS advised us of a traffic advisory. Shortly thereafter; the TCAS gave us a resolution advisory and commanded us to climb. The pilot flying (PF) disconnected the autopilot and started a climb. At about 3;300 feet MSL; the TCAS advised us that we were clear of conflict. The PF proceeded back to the original altitude of 3;000 MSL. No further incident emerged from that issue and the flight continued its approach uneventfully.

Original NASA ASRS Text

Title: LR45 Captain reported receiving an RA approaching DAL airport.

Narrative: While being vectored for a visual approach to runway 13L at DAL; the crew was informed from Regional Approach that a VFR traffic was below us at our 1 o'clock. Our altitude was 3;000 MSL. We looked for that traffic but did not see it as it blended with the landscape below. As the traffic approached our position; the TCAS advised us of a Traffic Advisory. Shortly thereafter; the TCAS gave us a Resolution Advisory and commanded us to climb. The Pilot Flying (PF) disconnected the autopilot and started a climb. At about 3;300 feet MSL; the TCAS advised us that we were clear of conflict. The PF proceeded back to the original altitude of 3;000 MSL. No further incident emerged from that issue and the flight continued its approach uneventfully.

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.