What was found
BTB - ETOPS SIGNIFICANT SYSTEM ICAS MESSAGE (R) FMC FAIL. FMC FAILED AFTER ENGINE START, RETURNED TO GATE. SWAPPED POSITION OF LT AND RT FMC COMPUTERS. MSG CLEARED. OPS CK NOW OK. FMC'S LEFT IN SWAPPED POSITIONS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
BTB - ETOPS SIGNIFICANT SYSTEM ICAS MESSAGE (R) FMC FAIL. FMC FAILED AFTER ENGINE START, RETURNED TO GATE. SWAPPED POSITION OF LT AND RT FMC COMPUTERS. MSG CLEARED. OPS CK NOW OK. FMC'S LEFT IN SWAPPED POSITIONS.