TM 1-1520-238-23 Change 3 B-137 (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 11050201 GRIP ASSEMBLY, INSPECT 0.1 27, 154, CONTROL REMOVE 0.6 155, 215, INSTALL 0.6 262, 333, REPAIR 0.7 378 11050202 BASE ASSEMBLY INSPECT 0.1 376 F REMOVE 0.5 INSTALL 0.5 REPAIR 0.4 110503 COVER, ACCESS INSPECT 0.1 376 REMOVE 0.4 INSTALL 0.4 REPAIR 0.2 110504 HOUSING ASSEMBLY, CYCLIC INSPECT 0.1 27, 85, 96  129 REMOVE 0.8 , , 154, 155, INSTALL 0.8 163, 262, 267, 335, 376 434 REPAIR 0.8 0.7 376, 434, 435, 442 11050401 SUPPORT ASSEMBLY, INSPECT 0.1 377 F CYCLIC REMOVE 0.4 INSTALL 0.4 REPAIR 0.8 11050402 HOUSING ASSEMBLY, CYCLIC REMOVE 0.9 27, 154, 215, 232, F INSTALL 0.9 , , 262, 267, REPAIR 0.8 376, 378, 445, 446 11050403 ARM ASSEMBLY, INPUT, CYCLIC REMOVE 0.5 27, 152, 154, 156, F INSTALL 0.5 215, 262, 377, 378, 445 11050404 ARM ASSEMBLY, FLIGHT INSPECT 0.2 27, 129, CONTROL REMOVE 0.6 152, 154, 215, 262, INSTALL 0.6 376, 377, 378, 435, REPAIR 0.9 , , 445