TM 1-1520-238-23 Change 3 B-21 (1) (2) (3) (4) (5) (6) MAINTENANCE LEVEL TOOLS & EQUIP GROUP NUMBER COMPONENT/ASSEMBLY MAINTENANCE FUNCTION AVUM (O) AVIM (F) DEPOT (D) REF CODE REMARKS CODE 020601 BULKHEAD, AIRCRAFT REPAIR 0.7 377 020602 BULKHEAD, AIRCRAFT REPAIR 4.0 377 020603 SKIN, STRINGER INSTALLATION REPAIR 1.0 377 020604 SUPPORT ASSEMBLY REMOVE 0.4 376 INSTALL 0.4 REPAIR 1.1 020605 STEP INSTALLATION ASSEMBLY REPAIR 0.1 376 0207 PANEL, INSTRUMENT, INSPECT 0.1 377 INSTALLATION REPAIR 0.4 0208 CONSOLE ASSEMBLY INSPECT 0.1 376 INSTALLATION REPAIR 0.4 020801 PANEL ASSEMBLY, INSPECT 0.1 376 CONSOLE REMOVE 0.2 INSTALL 0.2 REPAIR 0.5 020802 PANEL ASSEMBLY, REMOVE 0.2 376 CONSOLE INSTALL 0.2 REPAIR 0.5 020803 PANEL ASSEMBLY, REMOVE 0.2 376 CONSOLE INSTALL 0.2 REPAIR 0.4 020804 PANEL ASSEMBLY, INSPECT 0.1 376 CONSOLE REMOVE 0.2 INSTALL 0.2 REPAIR 0.5 020805 CONSOLE INSTALLATION INSPECT 0.1 376 REPAIR 0.3 020806 PANEL INSTALLATION, INSPECT 0.1 376 A, D, I, J, CONSOLE REMOVE 0.2 U INSTALL 0.2 REPAIR 0.5