TM 1-1520-238-23 B-98 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 0702072302 TUBE ASSEMBLY, METAL REPAIR 4.6 27, 129, 154, 384, 393 R, AM 0702072303 TUBE ASSEMBLY, METAL REPAIR 4.6 27, 129, 154, 384, 393 R, AM 0702072304 TUBE ASSEMBLY, METAL REPAIR 4.7 27, 129, 154, 384, 393 R, AM 0702072305 TUBE ASSEMBLY, METAL REPAIR 6.8 27, 129, 154, 384, 393 R, AM 0702072306 TUBE ASSEMBLY, METAL REPAIR 4.5 27, 129, 154, 384, 393 R, AM 0702072307 TUBE ASSEMBLY, METAL REPAIR 7.0 27, 129, 154, 384, 393 R, AM 0702072308 TUBE ASSEMBLY, METAL REPAIR 6.9 27, 129, 154, 384, 393 R, AM 0702072309 TUBE ASSEMBLY, METAL REPAIR 7.1 27, 129, 154, 384, 393 R, AM 0702072310 TUBE ASSEMBLY, METAL REPAIR 4.6 27, 129, 154, 384, 393 R, AM 0702072311 TUBE ASSEMBLY, METAL REPAIR 4.7 27, 129, 154, 384, 393 R, AM 0702072312 TUBE ASSEMBLY, METAL REPAIR 4.5 27, 129, 154, 384, 393 R, AM 0702072401 TUBE ASSEMBLY, METAL REPAIR 4.7 27, 129, 154, 384, 393 R, AM