As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ACCOMPLISHMENT OF EMBRAER SERVICE BULLETIN 505-55-0004 REV 01, ONE AILERON MASS BALANCE WEIGHT WAS FOUND TO BE BELOW MINIMUM WEIGHT. REPLACED WEIGHT WITH NEW, PART NUMBER PE915109-L31 PER SERVICE BULLETIN INSTRUCTIONS. THIS REPORT SUBMITTED TO COMPLY WITH PART 135 OPERATOR'S GENERAL MAINTENANCE MANUAL (GMM) REQUIREMENTS.