TM 1-1520-265-23 INDEX-Continued Subject Paragraph Page Number Number Main Landing Gear Shock Strut Lower Stage Piston (MT)............................................................  4.25 4-58 Backup Method................................................................................................................  4.25.4 4-60 Defects............................................................................................................................  4.25.2 4-58 Description ......................................................................................................................  4.25.1 4-58 Primary Method ...............................................................................................................  4.25.3 4-58 System Securing ............................................................................................................. 4.25.5 4-60 Main Landing Gear Shock Strut Upper Cylinder (ET)................................................................... 4.24 4-55 Backup Method................................................................................................................  4.24.4 4-58 Defects............................................................................................................................  4.24.2 4-55 Description ......................................................................................................................  4.24.1 4-55 Primary Method ...............................................................................................................  4.24.3 4-57 System Securing ............................................................................................................. 4.24.5 4-58 Main Landing Gear Wheel Assembly (ET).................................................................................... 4.26 4-60 Backup Method................................................................................................................  4.26.4 4-63 Defects............................................................................................................................  4.26.2 4-60 Description ......................................................................................................................  4.26.1 4-60 Primary Method ...............................................................................................................  4.26.3 4-62 System Securing ............................................................................................................. 4.26.5 4-63 Main Rotor Blade (Voids) (BT) ..................................................................................................... 2.20 2-44 Backup Method................................................................................................................  2.20.4 2-48 Defects............................................................................................................................  2.20.2 2-44 Description ......................................................................................................................  2.20.1 2-44 Primary Method ...............................................................................................................  2.20.3 2-46 System Securing ............................................................................................................. 2.20.5 2-48 Main Rotor Blade Cuff Assembly (ET)..........................................................................................  2.21 2-48 Backup Method................................................................................................................  2.21.4 2-50 Defects............................................................................................................................  2.21.2 2-48 Description ......................................................................................................................  2.21.1 2-48 Primary Method ...............................................................................................................  2.21.3 2-49 System Securing ............................................................................................................. 2.21.5 2-50 Main Rotor Blade Tip Cap Fairing (ET) ........................................................................................  2.19 2-43 Backup Method................................................................................................................  2.19.4 2-44 Defects............................................................................................................................  2.19.2 2-43 Description ......................................................................................................................  2.19.1 2-43 Primary Method ...............................................................................................................  2.19.3 2-43 System Securing ............................................................................................................. 2.19.5 2-44 Main Rotor Hub (ET) ...................................................................................................................... 2.6 2-9 Backup Method.................................................................................................................. 2.6.4 2-11 Defects..............................................................................................................................  2.6.2 2-9 Description ........................................................................................................................  2.6.1 2-9 Primary Method ................................................................................................................. 2.6.3 2-9 System Securing ............................................................................................................... 2.6.5 2-11 Index 8