TM 1-1520-238-23 Change 3 B-97 (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 0702072201 TUBE ASSEMBLY, METAL REPAIR 4.6 27, 129, 154, 384, 393 R, AM 0702072202 TUBE ASSEMBLY, METAL REPAIR 7.0 27, 129, 154, 384, 393 R, AM 0702072203 TUBE ASSEMBLY, METAL REPAIR 4.5 27, 129, 154, 384, 393 R, AM 0702072204 TUBE ASSEMBLY, METAL REPAIR 6.9 27, 129, 154, 384, 393 R, AM 0702072205 TUBE ASSEMBLY, METAL REPAIR 4.7 27, 129, 154, 384, 393 R, AM 0702072206 TUBE ASSEMBLY, METAL REPAIR 4.5 27, 129, 154, 384, 393 R, AM 0702072207 TUBE ASSEMBLY, METAL REPAIR 4.6 27, 129, 154, 384, 393 R, AM 0702072208 TUBE ASSEMBLY, METAL REPAIR 4.6 27, 129, 154, 384, 393 R, AM 0702072209 TUBE ASSEMBLY, METAL REPAIR 7.1 27, 129, 154, 384, 393 R, AM 0702072210 TUBE ASSEMBLY, METAL REPAIR 4.6 27, 129, 154, 384, 393 R, AM 0702072211 TUBE ASSEMBLY, METAL REPAIR 7.1 27, 129, 154, 384, 393 R, AM 0702072301 TUBE ASSEMBLY, METAL REPAIR 7.1 27, 129, 154, 384, 393 R, AM