B737-800 captain reported a track deviation occurred on the RNAV Y 4R approach to mdw. A last-minute...

Attributes
ACN	1568758
Time
Date	201808
Local Time Of Day	0601-1200
Place
Locale Reference	MDW.Airport
State Reference	IL
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Route In Use	STAR PANGG 3 RNAV
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 347 Flight Crew Type 21662
Events
Anomaly	ATC Issue All Types Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types

Narrative:

Arriving into mdw on the pangg 3 STAR. I was the pilot monitoring (pm) on this leg. We were expecting vectors to the ILS 4R approach as advertised on the ATIS. Upon contacting approach; we were given 'fly transition to RNAV Y 4R approach'. My first officer (first officer) began the programming of the FMC while I was heads up. After he finished programming; I confirmed the waypoints on page 1 of the legs page. (I did not go to page 2 to see the discontinuity; vvmi.) arriving over olcyk IAF; I immediately realized we failed the right turn to the next fix; savrd. The first officer corrected the discontinuity error as quickly as possible and we began the turn. The approach controller queried our flight path and we informed him of our correction. We continued uneventfully.

Original NASA ASRS Text

Title: B737-800 Captain reported a track deviation occurred on the RNAV Y 4R Approach to MDW. A last-minute change to the clearance was cited as contributing.

Narrative: Arriving into MDW on the PANGG 3 STAR. I was the Pilot Monitoring (PM) on this leg. We were expecting vectors to the ILS 4R Approach as advertised on the ATIS. Upon contacting Approach; we were given 'fly transition to RNAV Y 4R Approach'. My First Officer (F/O) began the programming of the FMC while I was heads up. After he finished programming; I confirmed the waypoints on page 1 of the LEGS page. (I did not go to page 2 to see the discontinuity; VVMI.) Arriving over OLCYK IAF; I immediately realized we failed the right turn to the next fix; SAVRD. The F/O corrected the discontinuity error as quickly as possible and we began the turn. The Approach Controller queried our flight path and we informed him of our correction. We continued uneventfully.

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.

B737-800 captain reported a track deviation occurred on the RNAV Y 4R approach to mdw. A last-minute change to the clearance was cited as contributing.