B737NG flight crew reported a track deviation occurred on the RNAV rnp arrival into iah after failin...

Attributes
ACN	1558978
Time
Date	201807
Local Time Of Day	0601-1200
Place
Locale Reference	IAH.Airport
State Reference	TX
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B737 Next Generation Undifferentiated
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Type 2330.47
Person 2
Function	Pilot Not Flying Captain
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 75 Flight Crew Total 16500 Flight Crew Type 5500
Events
Anomaly	Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types

Narrative:

While on the DRLLR5 arrival into houston we were given the RNAV rnp runway 26R. When we entered the approach into the FMC we failed to close the discontinuity up between the arrival and the approach. When we were supposed to start the turn over drkar we continued straight out on the 087 heading per the DRLLR5 arrival with the autopilot on. Just after passing the drkar fix we disconnected the autopilot and started the turn to get back onto the approach. Shortly after commencing the turn the approach controller queried us to make sure we were turning onto the approach. We told him we were in the turn and got back on to the course just after passing drkar and continued in without any further incident. ATC did not query us again and we landed with no other issues.

Original NASA ASRS Text

Title: B737NG flight crew reported a track deviation occurred on the RNAV RNP arrival into IAH after failing to close a discontinuity in the FMC.

Narrative: While on the DRLLR5 arrival into Houston we were given the RNAV RNP runway 26R. When we entered the approach into the FMC we failed to close the discontinuity up between the arrival and the approach. When we were supposed to start the turn over DRKAR we continued straight out on the 087 heading per the DRLLR5 arrival with the autopilot on. Just after passing the DRKAR fix we disconnected the autopilot and started the turn to get back onto the approach. Shortly after commencing the turn the Approach Controller queried us to make sure we were turning onto the approach. We told him we were in the turn and got back on to the course just after passing DRKAR and continued in without any further incident. ATC did not query us again and we landed with no other issues.

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.

B737NG flight crew reported a track deviation occurred on the RNAV rnp arrival into iah after failing to close a discontinuity in the FMC.