TM 1-1520-238-23 B-74 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 050203 BRACKET, DOUBLE REMOVE 0.2 372 ANGLE INSTALL 0.2 REPAIR 0.6 050204 FOLLOWER, MAIN ROTOR REMOVE 6.8 27, 154, INSTALL 6.8 194, 199, 262  372 REPAIR 0.3 , , 439 050205 HUB, ROTOR, HELICOPTER REPAIR 0.5 7.8 27, 107, 154, 194, 199, 211, 213, 262, 274, 372, 375, W 050206 PLATE ASSEMBLY, HUB, MAIN REPAIR 0.8 27, 154, 155, 163, 197, 199, 212, 262, 287, 372 W 050207 SHOE ASSEMBLY, MAIN ROTOR REMOVE 1.6 2, 27, 107, 154, U INSTALL 1.6 194, 199, 262, 295, REPAIR 0.8 0.7 309, 372, 410, 425 050208 FITTING ASSEMBLY-WEIGHT REPAIR 0.7 27, 154, 194, 262, 372, 439 050209 FITTING-WT SUPPORT REPAIR 1.0 27, 154, 194, 262, 372, 439 0503 TAIL ROTOR INSTL INSPECT 0.2 273, 376 REPAIR 4.7