EMB ERJ 170/175 ER/LR
Flight Crew Air Transport Pilot (ATP)
Flight Crew Type 6000
Aircraft Equipment Problem Less Severe; Inflight Event / Encounter Loss Of Aircraft Control; Inflight Event / Encounter Wake Vortex Encounter
Air Traffic Control Issued New Clearance; Flight Crew Took Evasive Action; Flight Crew Executed Go Around / Missed Approach; Flight Crew Regained Aircraft Control
Procedure; Environment - Non Weather Related
On approach into Charlotte Runway 23; we were at flaps 3 and approaching the FAF LECAR which is 2;500 MSL following a B757. Very suddenly the nose of the plane dropped followed by the right wing shooting straight up. I had my hands on the controls and I disconnected the autopilot and applied the maximum amount of aileron and full power. The airplane however kept rolling. We finally exited the wake at a nose low attitude. I broke off the approach and the FO requested a heading and altitude from CLT tower/approach. We climbed to 4;000 on a 120 heading and received delay vectors until we could sort out the extensive list of EICAS messages. I tried to re-engage the automation but we lost our air data. A short time later the EICAS shortened down to AUTOTHROTTLES FAIL; WINDSHEAR FAIL; STALL PROTECTION FAIL; and ANGLE OF ATTACK LIMIT FAIL. At this point the autopilot worked again but not the auto throttles. We cleaned up the plane and accelerated to 210 KTS. I then called back to the flight attendants to check on the situation in the cabin. Everyone fortunately had their seat belts on and was fine. I made a cabin PA to the passengers; then the FO ran the associated QRH items associated with each of the EICAS messages. The FO entered the new V speeds; reloaded the approach; ran another descent checklist; then we requested vectors back to Runway 23. On the ground we received ADS 2 (Air Data System) FAIL; ADS 3 FAIL messages.
ERJ-175 Captain reported encountering wake turbulence on approach to CLT in trail of a B757 that resulted in an uncontrollable roll with subsequent system anomalies related to the unusual attitude.