How to Use This Manual

TM 1-1520-265-23 MLG Main Landing Gear M/R Main Rotor MT Magnetic Particle Method NDI Nondestructive Inspection OUTBD Outboard P/N Part Number PSI Pounds per Square Inch PSIG Pounds per Square Inch Gauged PT Fluorescent Penetrant Method RH Right-hand (right side of aircraft aft looking forward) ROT Rotation RT Radiographic Method SAS Stability Augmentation System SPAD Shear Pin Activated Decoupler STA Station TLG Tail Landing Gear TM Technical Manual T/R Tail Rotor UT Ultrasonic Method VdB Vertical Decibels (Gain) V Pos Vertical Position WL Waterline 1.1.2. How to Use This Manual. This manual is divided into six sections as follows: I Introduction II Rotor System III Drive System IV Airframe and Landing Gear System V Power Plant System VI Flight Control System Section I contains the introduction and general information pertaining to the H-60 helicopter series and Nondestructive Inspections. Sections II through VI contain detailed inspection procedures for specific items located within each system. In general, inspection items are grouped with respect to part location and function. To use the manual, it is necessary to know the system and name of the inspection item. 1-5