Crj-900 had a close encounter with another aircraft on initial arrival; TCAS provided an RA.

Attributes
ACN	842957
Time
Date	200907
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Regional Jet 900 (CRJ900)
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 33 Flight Crew Total 7000 Flight Crew Type 600
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict

Narrative:

We had the airport in sight and were cleared pilots discretion to 4000 ft. Seconds later approach told us to level off at 5000 ft. At that moment we saw the traffic on TCAS at the same alt head on to our 11 o'clock. We received a RA and complied with the RA. 3;000 ft climb. When we cleared the conflict; we told approach we had an RA and he quickly handed us off to tower. The cause was a lack of situational awareness.

Original NASA ASRS Text

Title: CRJ-900 had a close encounter with another aircraft on initial arrival; TCAS provided an RA.

Narrative: We had the airport in sight and were cleared pilots discretion to 4000 FT. Seconds later approach told us to level off at 5000 FT. At that moment we saw the traffic on TCAS at the same alt head on to our 11 o'clock. We received a RA and complied with the RA. 3;000 FT climb. When we cleared the conflict; we told approach we had an RA and he quickly handed us off to tower. The cause was a lack of situational awareness.

Data retrieved from NASA's ASRS site as of April 2012 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.