EMB ERJ 145 ER/LR
Flight Crew Air Transport Pilot (ATP)
Training / Qualification; Confusion
ATC Issue All Types; Aircraft Equipment Problem Less Severe; Deviation - Altitude Excursion From Assigned Altitude; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued Advisory / Alert; Flight Crew Became Reoriented; Flight Crew Returned To Clearance
Aircraft; Human Factors; Procedure
We were given the DRLLR one arrival on takeoff. We were rerouted to a different arrival and later given DRLLR one again. We entered the 26R approach in our FMS and some point around DRLLR; we were given the 26L runway assignment. We changed the FMS to the new runway and verified it. We arrived at the DOMNO fix and our plane continued on its present course and did not turn. As the NAV system changed to roll mode; we were TCS'ing the plane to the left to get it back on course. The Controller then questioned if we were turning and replied we were already in the turn. He stated that a lot of Company planes were having issues with changing runways in the FMS and it was causing a problem. After we were back on course and going through 7;000 FT; the Captain stated we were to stop at 7;000 FT for VLDEZ. I TCS'ed the plane again and started a climb back up to the new altitude of 7;000 FT. The Controller was busy with other a/c and we did not hear anything about the momentary altitude change. IAH changing runways and having two different altitudes for the same arrival is a major threat. Our current FMS software during changing runways is also a major threat since the system does not work right. Not accepting any runway changes or arrival changes once we are on the arrival.
EMB-145 First Officer reports being switched from 26R to Runway 26L during the DRLLR RNAV arrival. When the runway is changed the transition drops out and is not re-entered by the crew; resulting in a track deviation at DOMNO.