As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REJECTED TAKE OFF AT 75KT FOR LT REVERSER ISOLATION VALVE EICAS MSG. COMPLIED WITH QRH PROCEDURES, RETURNED TO GATE. ( STATUS MSG "L REV ISLN VAL") FAULT CODE: 78-34-XC. ACFT RELEASED FOR SERVICE IAW MEL/CDL: 78-31-01-01. FOUND BOTH TRANS COWL GAPS OUT OF LIMITS SPECIFIED IN STEP 4 OF FIM ADJUSTED PER AMM 78-31-23-4. FOUND BURR ON RESTRICTOR VALVE REMOVED AND REPLACED PER MM 78-34-05-4. DEPINNED CX D2900 PIN 3 PER EA F-7830-132905. TEST FLEW ACFT, OPS CKD GOOD ON 78-30/1840.