The Aviation Maintenance Technician Handbook–Airframe (FAA-H-8083-31) is one of a series of three handbooks for persons preparing for certification as an airframe or powerplant mechanic. It is intended that this handbook provide the basic information on principles, fundamentals, and technical procedures in the subject matter areas relating to the airframe rating. It is designed to aid students enrolled in a formal course of instruction, as well as the individual who is studying on his or her own.This book includes the following topics:Chapter 10 Aircraft Instrument SystemsChapter 11 Communication and NavigationChapter 12 Hydraulic and Pneumatic Power SystemsChapter 13 Aircraft Landing Gear SystemsChapter 14 Aircraft Fuel SystemChapter 15 Ice and Rain ProtectionChapter 16 Cabin Environmental Control SystemsChapter 17 Fire Protection Systems