As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#483, BOS-RDU. (AIRCRAFT PERFORMED N AIR TURN BACK TO BOS). AIRSPEED MISMATCH ON TAKEOFF FO AIRSPEDD 212 LEVEL AT 7000FT CA AND IESS 250; REMOVED AND REPLACED #4 ADS PROBE IAW AMM 34-14-01. REQUIRES OPS CHECK AND SEALANT CURE TIME. OPS CHECK OF ADS PROBE 4 C/W, NDN IAW AMM 34-15-00'