Regional Jet 700 ER/LR (CRJ700)
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Situational Awareness
Airspace Violation All Types; Conflict NMAC; Deviation - Altitude Excursion From Assigned Altitude; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew FLC complied w / Automation / Advisory; Flight Crew Took Evasive Action
Human Factors
ATC gave initial instruction for a descent to an altitude of 11;000 feet by Chicago Center (I believe); and was given a frequency change right away and Minneapolis Center (I believe) said amend altitude and maintain FL200. I believe we were crossing FL230; and shortly after; we got a TCAS RA; and we were close to the traffic by about -300 feet. First Officer clicked off the autopilot; complied with the RA; and I reported the event to ATC. No further incident.
CRJ-700 Captain reported a NMAC in the vicinity of DSM.