Status Subject Contact: CAPRONI Calif A-21 & A-21S M Wing flutter M Drain holes M Rudder pulley M In flight break up Detail Caproni (Italy) aileron modifications to be incorporated replacement in undercarriage compartment. all flying tail to be modified Reference information AD 76-117-A21-6 AD 76-83, SB 76-06 TN 79/01 TNS 07/76 07/76 08/79 02/90 Page 1 BGA Compendium 01/02