Regional Jet 700 ER/LR (CRJ700)
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Conflict NMAC
Flight Crew Took Evasive Action
Human Factors; Procedure
[Inbound to] OKC approximately 30 miles to the northeast I had a TCAS alert that turned into a RA. I was descending from 6;000 feet to 4;000 feet communicating with OKC approach. I clicked off the auto pilot and pushed the nose down following the guidence of the RA. I notified approach what I was doing and asked if he had any traffic on his radar. He told me he had traffic at my 11 o'clock at 5;500 feet. While I was descending I found the traffic; a V-Tail Bonanza. The traffic was also descending toward us causing me to continue descending and I initiated a slight turn to the North. With the low wing of the Beech aircraft I doubt the pilot ever saw us. I think we passed within approximately 200 feet. I leveled off at at four thousand feet; was handed off to OKC and landed without any further incident. The above event happened because ATC did not notify me of conflicting aircraft.Communicate when general VFR aircraft are close.
CRJ-700 Captain reported NMAC with a Bonanza on approach to OKC.