Crj-700 first officer reported an near midair collision with a bonanza during descent into okc.

Attributes
ACN	1257954
Time
Date	201504
Local Time Of Day	1201-1800
Place
Locale Reference	OKC.Airport
State Reference	OK
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 700 ER/LR (CRJ700)
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Aircraft 2
Make Model Name	Bonanza 35
Flight Phase	Descent
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Total 4700
Events
Anomaly	ATC Issue All Types Conflict NMAC
Miss Distance	Vertical 200

Narrative:

Approximately 25 miles northeast of okc airport; we were cleared to descend from 6;000 feet MSL to 4;000 feet MSL. At approximately 5;000 feet MSL; we received a TA alert and approximately 20 seconds later; we received an RA with a command to descend at 2;000 FPM. Upon reaching 4;000 feet MSL; a beechcraft V35 crossed over the top of us at approximately 200 feet. I asked okc approach about the V35 and his reply was that the V35 was supposed to be at 5;500 feet MSL. I then inquired if the V35 was verified and okc approach said he was not. It appeared that the V35 was descending to a GA airport approximately 10-15 miles northeast of our position.

Original NASA ASRS Text

Title: CRJ-700 First Officer reported an NMAC with a Bonanza during descent into OKC.

Narrative: Approximately 25 miles northeast of OKC Airport; we were cleared to descend from 6;000 feet MSL to 4;000 feet MSL. At approximately 5;000 feet MSL; we received a TA alert and approximately 20 seconds later; we received an RA with a command to descend at 2;000 FPM. Upon reaching 4;000 feet MSL; a Beechcraft V35 crossed over the top of us at approximately 200 feet. I asked OKC Approach about the V35 and his reply was that the V35 was supposed to be at 5;500 feet MSL. I then inquired if the V35 was verified and OKC Approach said he was not. It appeared that the V35 was descending to a GA airport approximately 10-15 miles northeast of our position.

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.