EMB ERJ 170/175 ER/LR
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Landed As Precaution; Flight Crew Diverted; Flight Crew Landed in Emergency Condition
Aircraft
We were leveled at FL360 when we experienced multiple system problems. These malfunctions included but were not limited to:PFD 1 attitude and altitude indications failedBoth engine indications were faultyPressurization system failedAuto pilotWe also experienced multiple EICAS master warnings; master cautions; and system status error messages. Additionally there were multiple aural cautions and warnings such as bank angle and EGPWS. All of this happened in relatively short amount of time.First Officer (FO) and I decided that with the current state of the aircraft; and the fact that additional warnings and cautions continued to present themselves every few moments; we should remain in VMC conditions. In addition; given the fact there was possible IMC weather between our position and [destination]; we elected to divert to [a nearby alternate].Noticing that our cabin altitude was increasing to the point that the 'Cabin Altitude High' master warning displayed; we [advised ATC] and requested an emergency descent. During the 20+ minutes of flight time there were many master warnings and cautions; including what we believe to be erroneous engines readings that were annunciated and displayed on our EICAS and other displays. As we believed the aircraft's electrical condition was continuing to deteriorate; the FO and I believed landing this aircraft was the number one priority. Fortunately; we were able to maintain VMC during the majority of the emergency. We were cleared for the visual approach and landed without further in-flight incidents. However shortly after landing; our nose wheel steering disengaged without any cautions or faults. After trying unsuccessfully to re-engage the steering; we requested towing to the ramp we were assigned.
EMB-175 Captain reported diverting to an alternate after experiencing multiple system error messages; cause undetermined.