TM 1-1520-238-23 B-40 Change 3 (1) (6) (5) (4) (3) (2) MAINTENANCE LEVEL GROUP NUMBER REMARKS CODE TOOLS & EQUIP REF CODE DEPOT (D) AVIM (F) AVUM (O) MAINTENANCE FUNCTION COMPONENT/ASSEMBLY 021682 COVER PLATE INSTALLATION REPAIR 0.2 376 021683 COVER, ACCESS INSPECT 0.1 377 REMOVE 0.1 INSTALL 0.1 REPAIR 0.7 021684 PANEL ASSEMBLY, INSPECT 0.1 377 ACCESS REMOVE 0.1 INSTALL 0.1 REPAIR 0.5 0217 SUPPORT INSTALLATION, INSPECT 0.1 376 ROTOR REPAIR 1.6 021701 BASE, ROTOR SUPPORT REMOVE 6.5 5, 6, 27, 29, 50, 113, 124, D, F, I, J, L, U, AA INSTALL 6.5 152, 154, 172, 206, 262, 292, REPAIR 0.4 0.5 376, 412, 428, 438, 447 021702 BASE, MAST SUPPORT REPAIR 0.7 0.5 5, 6, 27, 29, 50, 113, 124, 152, 154, 172, 206, 262, 292, 376, 412, 428, 428A, 438, 447 D, F, I, J, L, U, AA 021703 STRUT ASSEMBLY, INSPECT 0.1 5, 29, ROTOR SUPPORT (FORWARD LEFT REMOVE 1.5 113, 125, 376, 412, CENTER) INSTALL 1.5 413, 413A, REPAIR 0.9 3.0 , 438