As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF ROLL THE RT REVERSER ECAS MESSAGE CAME INTERMITTENT REJECT AT 80 KTS. REVERSER SECURED IN FWD THRUST POSITION. FOUND THE RIGHT LOCK PROX TARGET, TOO FAR AWAY FROM SENSOR. INSTALLED SHIMS ON RIGHT LOCK PROX SENSOR, PER AMM 78-30-00-5-4. GAP IS WITHIN LIMITS ON TARGET SENSOR. OPS CHECKS GOOD. REFERENCE WRI 78-30-1168.