What was found
DURING ACCOMPLISHMENT OF SERVICE BULLETIN 505-55-0004 REV 01 (DATED 06/24/2020) WE NOTED THE LEFT AILERON MASS BALANCE WEIGHT PART NUMBER PE915109-L31 WAS UNDER THE WEIGHT LIMITS (1761 GRAMS) AS PRESCRIBED BY THE SERVICE BULLETIN (MINIMUM 1787 GRAMS) -21 GRAMS BELOW TOLERANCE. THE WEIGHT WAS REPLACED WITH A NEW PART AND THE AILERON BALANCING WAS PERFORMED WITH NO FURTHER DEFECTS NOTED.THE LEFT AILERON WAS SUBSEQUENTLY RE-IDENTIFIED TO PART NUMBER 505-14736-613 AS PER SERVICE BULLETIN INSTRUCTIONS. ALSO DURING ACCOMPLISHMENT OF SERVICE BULLETIN 505-55-0004 REV 01 (DATED 06/24/2020) WE NOTED THE RIGHT ELEVATOR ADJUSTABLE MASS BALANCE WEIGHT PART NUMBER PE915109-L33 (1 EACH) WAS UNDER THE WEIGHT LIMITS (80 GRAMS) AS PRESCRIBED BY THE SERVICE BULLETIN (MINIMUM 84 GRAMS)-4 GRAMS BELOW TOLERANCE. THE WEIGHT WAS REPLACED WITH A NEW PART AND THE ELEVATOR BALANCING WAS PERFORMED WITH NO FURTHER DEFECTS NOTED. THE ELEVATOR WAS RE-IDENTIFIED TO PART NUMBER 505-11082-602 AS PER SERVICE BULLETIN INSTRUCTIONS.