EMB ERJ 190/195 ER/LR
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Critical
Flight Crew Returned To Gate; Flight Crew Rejected Takeoff; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
Sometime after the 80 KTS callout by the First Officer; we received a BRK RH and BRK LH FAULT lights on EICAS panel. At about the same time I noticed I had a difficult time keeping the aircraft on centerline. The aircraft veered left and right. It almost felt like the brakes were grabbing with no input from me; the pilot flying. The winds had been strong all day and I had applied crosswind techniques to counter the effects but this time it just felt very abnormal. About the time I decided to reject the takeoff; I noticed the rejected takeoff (RTO) switch auto click off with no input by me (I had not yet applied brakes). We later concluded that the RTO switch clicked off on its own. I performed the RTO procedure going to manual braking and using reverse thrust. We cleared the runway; Tower asked if we wanted to try it again or needed assistance. We went back to gate with no assistance. The aircraft was steerable and brakes worked. As I lined up the aircraft with the jetway; we received the EICAS caution LDG NO DISPATCH message. When parked I wrote the problem up and subsequent flight cancellation took place. When my First Officer and I looked at QRH PROCEDURE for LDG NO DISPATCH message it stated do not takeoff. Good idea. It all happened very quickly and was not aggressive as say a simulated RTO during a SIM ride. I performed the RTO as trained with the exception that I failed to make the 'this is your captain; remain seated' PA in a timely matter. My First Officer did that for me as we were clearing the runway. The B Flight Attendant told us she also felt that something was not right as the aircraft seemed to 'fish tail' very aggressively.
EMB190 reports receiving a BRK RH and BRK LH FAULT lights on EICAS panel shortly after the 80 KTS call during takeoff. Directional control difficulties had also been noted and the Captain rejects the takeoff. Upon returning to the gate an EICAS caution LDG NO DISPATCH message is received.