TM 1-1520-238-23 Change 3 B-13 (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 020310 FRAME SECTION, SKID REMOVE 3.3 27, 154, INSTALL 3.3 262, 376 REPAIR 0.3 020311 FOOTSTEP INSTALLATION ASSEMBLY REPAIR 0.3 376 020312 FOOTSTEP INSTALLATION REPAIR 0.3 376 020313 SUPPORT INSTALLATION ASSEMBLY REPAIR 1.3 27, 154, 262, 376 020314 BOLT, EYE REMOVE 2.1 27, 154, INSTALL 2.1 262, 376 020315 SUPPORT INSTALLATION ASSEMBLY REPAIR 0.9 27, 154, 262, 376 020316 BOLT, EYE REMOVE 1.9 27, 154, INSTALL 1.9 262, 376 020317 BULKHEAD INSTALLATION ASSEMBLY REPAIR 0.3 27, 154, 262, 376 020318 SUPPORT ASSEMBLY, REMOVE 3.1 377 A, D, I, J, ENGINE INSTALL 3.1 U REPAIR 2.6 020319 BULKHEAD INSPECT 0.2 27, 154, INSTALLATION REMOVE 0.7 262, 376 ASSEMBLY INSTALL 0.7 REPAIR 1.4 020320 BULKHEAD INSTALLATION ASSEMBLY REPAIR 11.8 27, 154, 262, 376 020321 PAN ASSEMBLY, FWD INSPECT 0.1 27, 154, FUEL DRAIN REMOVE 1.8 262, 376 INSTALL 1.8 REPAIR 2.0