As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#1940, SRQ-BOS. (AIRCRAFT DIVERTED TO RIC AND DECLARED AN EMERGENCY) 'AILERON FAIL CAUTION MSG IN FLT AT FL 360 265KTS PRECEDED BY FLT CTRL FAULT PRIM REU INOP; CMC FAULT CODE 2704F0312 27 FLT CRTL FAULT PRIM REU INOP ACCOMPLISHED FIM J27-04-33-13AAA-421A-A. RESET REU MFS 4 & REU OUTBD AIL ON R-FBWPC. PERFORMED FLIGHT CONTROL ACTUATION TEST PER AMP 27-04-00-02AAA-343A-A AND EFCS BIT PER AMP J27-04-00-01AAA-343A-A. ALL EICAS AND ACTIVE FAULTS CLEARED. ORIG SUB DATE: 12/2/2022