B737 flight crew reported a track deviation occurred on the RNAV (rnp) Z 16L approach to den.

Attributes
ACN	1588997
Time
Date	201810
Local Time Of Day	0601-1200
Place
Locale Reference	DEN.Airport
State Reference	CO
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 53 Flight Crew Total 12653 Flight Crew Type 1323
Person 2
Function	Instructor Pilot Not Flying Check Pilot
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument
Experience	Flight Crew Type 3698
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance Deviation - Track / Heading All Types

Narrative:

We briefed the RNAV rnp Z 16L into den. Conditions VFR. This was during IOE. Approach control approved the RNAV rnp Z 16L approach. Approach was installed and we were given direct to either kuurt or kikme can't remember now which one; both fixes are part of the RNAV GPS Y 16L. Queried controller and was given an intercept course to the final (between jobob (IAF) and leets). Leets was the active waypoint and LNAV was armed; in heading sel at this time. Autopilot a in cmd. LNAV never captured and we went through the final approach course by maybe .5NM. Turned off the autopilot and manually re-intercepted the final. Normal and stable approach from that point until touch down.

Original NASA ASRS Text

Title: B737 flight crew reported a track deviation occurred on the RNAV (RNP) Z 16L Approach to DEN.

Narrative: We briefed the RNAV RNP Z 16L into DEN. Conditions VFR. This was during IOE. Approach Control approved the RNAV RNP Z 16L Approach. Approach was installed and we were given direct to either KUURT or KIKME can't remember now which one; both fixes are part of the RNAV GPS Y 16L. Queried Controller and was given an intercept course to the final (between JOBOB (IAF) and LEETS). LEETS was the active waypoint and LNAV was armed; in HDG SEL at this time. Autopilot A in CMD. LNAV never captured and we went through the final approach course by maybe .5NM. Turned off the autopilot and manually re-intercepted the final. Normal and stable approach from that point until touch down.

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.