What was found
DURING ACCOMPLISHMENT OF EMBRAER SERVICE BULLETIN 505-55-0004 REV 01 (DATED 06/24/2020) WE NOTED THE FOLLOWING MASS BALANCE WEIGHTS BELOW TOLERANCE AT LEFT ELEVATOR: ADJUSTABLE WEIGHTS PART NUMBER PE915109-L33 (10 EACH BELOW MINIMUM OF 84G), HORN MASS WEIGHT PART NUMBER PE915109-L42 (1 EACH BELOW MINIMUM OF 1095G) AND LT AILERON MASS WEIGHT PART NUMBER PE915109-L31 (1 EACH BELOW MINIMUM OF 1787G) ALL WEIGHTS HAS BEEN REPLACED WITH A NEW MASS WEIGHTS AND THE LT ELEVATOR AND LT AILERON BALANCING WAS PERFORMED WITH NO FURTHER DEFECTS NOTED. THE LT ELEVATOR WAS RE-IDENTIFIED TO PART NUMBER 505-11079-639 AND LT AILERON TO PART NUMBER 505-14736-619, AS PER SERVICE BULLETIN INSTRUCTIONS. WE ALSO NOTED THE FOLLOWING RIGHT ELEVATOR MASS BALANCE WEIGHTS BELOW TOLERANCE: ADJUSTABLE WEIGHTS PART NUMBER PE915109-L33 (16 EACH BELOW MINIMUM OF 84G), HORN MASS WEIGHT PART NUMBER PE915109-L42 (1 EACH BELOW MINIMUM OF 1095G), ALL WEIGHTS HAS BEEN REPLACED WITH A NEW MASS WEIGHTS AND THE ELEVATOR BALANCING WAS PERFORMED WITH NO FURTHER DEFECTS NOTED. THE ELEVATOR WAS RE-IDENTIFIED TO PART NUMBER 505-11079-640, AS PER SERVICE BULLETIN INSTRUCTIONS. AT RUDDER FOUND THE FOLLOWING ADJUSTABLE MASS BALANCE WEIGHTS BELOW TOLERANCE: PART NUMBER PE915109-L27 (7 EACH BELOW MINIMUM OF 455G), ALL WEIGHTS HAS BEEN REPLACED WITH A NEW MASS WEIGHTS AND THE RUDDER BALANCING WAS PERFORMED WITH NO FURTHER DEFECTS NOTED. THE RUDDER WAS RE-IDENTIFIED TO PART NUMBER 505-39061-617, AS PER SERVICE BULLETIN INSTRUCTIONS.