EMB ERJ 145 ER/LR
Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance
Aircraft; Human Factors
Flight filed the DRLLR3 arrival into IAH.  Upon [being] switched over to approach control with runway assigned and programmed in the FMS; aircraft continues to flying the arrival until DOMNO fix [when] ac took itself off LNAV mode and went into roll mode. Crew notify ATC of the situation; of which they are aware and had the crew fly a heading to re-intercept. ATC notified crew this is normal for [our] aircraft [type] or happens a lot for [company] aircraft.  This has happened a few times on this arrival with my crew coming into IAH.  There weren't any ghost fixes on the arrival once the runway was inputed into the FMS.  Crew review the arrival.
EMB-145 Captain reported that while flying the DRLLR3 RNAV to IAH his aircraft came out of LNAV and reverted to ROLL mode. Reporter commented this is not uncommon on this type aircraft.