B737 Undifferentiated or Other Model
Flight Crew Last 90 Days 91.5; Flight Crew Type 538.35
Human-Machine Interface
Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued Advisory / Alert; Flight Crew Became Reoriented; Flight Crew Returned To Clearance
Aircraft; Human Factors
During descent along FOOXX4 RNAV arrival; we received hand off to Tampa Approach approaching waypoint DADPE and issued a change of runway from 01L to 01R. PF changed the FMS runway to 01R only (left the arrival the same; FOOXX4). Along with the new runway selection; the FMS added the same RNAV arrival which created an additional Discontinuity in the FMS along the arrival. After passing DADPE; the FMS changed the AP to CWS Roll and allowed to aircraft to maintain current heading of 140-deg towards TPA. About 5-7 sec later; PM discovered the discrepancy while the PF was loading the new runway's Landing Performance in ACARS. PM immediately turned heading to rejoin the course into the next waypoint of BAYZZ. During the turn; Tampa Approach asked if we were planning to continue the routing as depicted on the RNAV arrival. We replied yes and never heard anything else from Tampa Approach. We estimated to be off course approximately 2 nm East of DADPE and did not see any traffic conflict both visually or on TCAS. The flight landed on runway 01R uneventfully.
FOOXX FOUR Arrival RWY 01L loaded. Handed off to second Tampa Approach frequency just before DADPE. We are given a new runway 01R. When we executed the RWY change in the FMC we were just approaching DADPE. The course change is 47 degrees after DADPE. When we executed the RWY change a discontinuity popped in the legs page after DADPE. FMA went to CWS control wheel steering and we started the turn in heading select. TPA Approach asked us if we were rejoining the arrival after DADPE. We told them yes and nothing else was said. The whole arrival was reloaded when we changed the RWY. The only fix remaining on the legs page was DADPE before the discontinuity. I have seen this happen before. We should have been more vigilant and waited until we were on a straight part of the arrival before changing the RWY.
B737 flight crew experiences a track deviation on the FOOXX4 arrival to TPA; when a runway change is entered in the FMC approaching DADPE. A route discontinuity appears and the aircraft does not make the turn to BAYZZ until manually selected by the crew.