B737 Next Generation Undifferentiated
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 191; Flight Crew Type 3000
Situational Awareness
Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Returned To Clearance; Flight Crew Became Reoriented
Human Factors
Arriving on the FRENCH3 arrival we were assigned Runway 34R. The FMC was programmed in anticipation of being assigned RNAV RNP Z 34R. We asked ATC if we should expect the RNAV arrival and were told possibly. Somewhere around ARCHY we were told it would be a visual arrival. The FO went into the FMC to renter the FRENCH3 arrival without the RNAV transition in order to extend the full arrival out. In reprogramming the FMC he made an entry error which I did not catch prior to execution which caused a loss of lateral path. The FO began correcting the FMC; I placed the MCP in heading select as we turned at BABAA; but did not add enough wind correction and we drifted wide east of course. The FMC was reprogrammed and course correction was made by HIMOM.
B737NG Captain reported a track deviation occurred on the RNAV RNP Z 34R arrival into DEN; following an error in programming the FMC.