Regional Jet 200 ER/LR (CRJ200)
Flight Crew Air Transport Pilot (ATP)
Workload; Time Pressure
ATC Issue All Types; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence
Flight Crew Became Reoriented
Human Factors; Procedure
As we began to get vectors off the arrival due to weather; approach control assigned us a different runway than we had brief and expected. The new approach was the ILS PRM (Precision Runway Monitor) Runway XXL into ZZZ. Seconds after the runway change we were assigned direct ZZZZZ and cleared for the approach. This gave us no time to brief the new approach and due to that we forgot to put in the monitor frequency. We continued on the approach. During the approach the first officer had trouble switching from white needles to green needles. This caused us to deviate from the localizer. The captain realized the mistake shortly after and made the first officer correct before we were 1 dot off the localizer so we continue the approach and landed safelyThe cause of this was lack of briefing a possible PRM approach. We had brief both runways but we were not aware that PRM's were in use due to the fact they were not advertised on the ATIS. The slight deviation on the localizer was due to task saturation on the first officer's part. [ATC] should start advertising PRM approaches when they are actually using them. As pilots we should recognize the threat that ZZZ sometimes is using PRM approaches even though they are not advertised.
[Report narrative contained no additional information.]
CRJ-200 flight crew reported not being aware of the Precision Runway Monitor in use because it was not advertised on ATIS.