(4) MAINTENANCE CATEGORY (5) INSPECTION EQUIPMENT REQUIREMENTS (3) INSPECT FOR (6) REMARKS (2) COMPONENT ASSEMBLY (1) PROCEDURE NUMBER AVUM AVIM DEPOT TM 1-1520-264-23 NOMENCLATURE OF END ITEMS HELICOPTER, AH-64A Series 2.19 Main Rotor Hub Cracks Ö 003 Bearing 2.20 Main Rotor Lower Shoe Cracks Ö 003 2.21 Main Rotor Head Hub Cracks Ö 002 Load Plate 2.22 Main Rotor Hub Cracks Ö 002 Brackets 2.23 Main Rotor Hub Lower Cracks Ö 002 Plate 2.24 Tail Rotor Fork Cracks Ö 003 Assembly (Head and Teeter Stop) 2.25 Tail Rotor Blade Cracks Ö 001 2.26 Tail Rotor Blade (Voids) Voids Ö 005 2.27 Tail Rotor Blade (Fluid) Fluid Ö 006 2.28 Tail Rotor Hub Cracks Ö 003 2.29 Tail Rotor Clamps and Cracks Ö 003 Locking Plates 3.2 Drive Shafts Cracks Ö 003 Backup 001 3.3 Drivetrain Couplings Cracks Ö 003 3.4 Drivetrain Flanges Cracks Ö 002 3.5 Damper and Anti-Flail Cracks Ö 003 Backup Supports 001 3.6 Forward Hanger Cracks Ö 002 Backup Bearing Flange 001 3.7 Forward Hanger Cracks Ö 003 Backup Bearing Support 001 3.8 Aft Hanger Bearing Cracks Ö 002 Backup Flange 001 3.9 Aft Hanger Bearing Cracks Ö 003 Support 3.10 Intermediate Gearbox Cracks Ö 003 Centrifugal Fan 3.11 Engine Nose Gearbox Cracks Ö 003 Backup 001 A-2 A-2