Regional Jet 700 ER/LR (CRJ700)
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Became Reoriented
Chart Or Publication; Human Factors
ORD was in east flow and the ATIS was advertising RNAV PRM 10R. The prevailing ceilings were approximately 1000 AGL. While reviewing and briefing the approach; we both missed 'LNAV' minimums weren't shown on the PRM approach plate. Only 'LNAV/VNAV' was published on the PRM plate. We both missed this and used the 'LNAV/VNAV' minimums. Per company procedure; we rounded the minimums up to the nearest hundred feet. The rounded minimums were the same for 'LNAV' on the regular plate as they were for 'LNAV/VNAV' on the PRM plate. We realized the mistake during post flight.RNAV approaches are rarely done during line flying. Although since the introduction of PRM approaches in to ORD; specifically to runway 10R which has been done before may have been contributing factors. We should have been more alert to the unusual approach and reacted accordingly.
[Report narrative contained no additional information.]
CRJ-700 flight crew did not initially detect that the RNAV PRM Runway 10R Approach to ORD did not list LNAV only minimums; only LNAV/VNAV minimums. The aircraft was capable of LNAV only.