Look at the first entry: AUW, page 11 — Page 535, Lesson 647

This is the index of the book — the alphabetical listing of every topic covered, with the page numbers where each appears. I want to walk you through what this tells you, because learning to read an index is part of learning to use a professional reference manual. Look at the first entry: AUW, page 11. That's All-Up Weight — the total weight of the aircraft at any moment. You'll see it defined on page 11. Then B — the B section. Balanced Field, pages 4 and 259. That's the take-off distance concept where, if an engine fails at the critical point, you can either stop or continue — the field length that balances both. Baulked Landing, page 4, and Baulked Landing Requirement, page 237 — that's the go-around after a landing is abandoned. Best Angle of Climb Speed (Vx), page 60 — the speed giving the greatest height gain per unit of horizontal distance. Brake Cooling, page 272, and Brake Energy Limit, page 270 — the thermal limits of the braking system. BRP, page 11 — that's Brake Release Point, where the take-off roll begins. Buffet Onset, page 326, and Buffet Speed, page 4 — the speed at which airflow separation causes the airframe to buffet. Now the C section. Calculating Ground Gradient, page 67 — the slope of the runway surface. Calculating Take-off Speeds and Thrust Settings, page 274. Calibrated Airspeed (CAS), pages 4 and 113 — indicated airspeed corrected for instrument and position error. CAS, page 11, is the abbreviation. CD, page 11 — coefficient of drag. CI, page 11 — coefficient of induced drag? No — let me be precise: in this book, CI is the abbreviation used on page 11. CL, page 11 — coefficient of lift. These are the dimensionless coefficients used in aerodynamic force calculations. Clearway, page 4, and Clearways, page 21 — an area beyond the runway, clear of obstacles, that can be used for the initial climb. Climb, page 43. Climb Angle, page 50 — the angle of the flight path relative to the horizontal. Climb Gradient, pages 4 and 48 — the ratio of height gained to horizontal distance, often expressed as a percentage. Climb Gradient Limit Mass, page 266 — the maximum weight at which the required climb gradient can still be achieved. Climbing After an Engine Failure, page 49. Climb Performance, page 183. Climb Profile, page 319 — the planned vertical path of the climb. And finally C of G, page 11 — Centre of Gravity, the point where the entire weight of the aircraft is considered to act. Now, here's the key point about this index: it's your map. When you're planning a flight and you need, say, the climb gradient limit, you go to page 266. When you need the brake energy limit, page 270. Every one of these entries is a door into a specific section of the book. As we work through the chapters, you'll be visiting these pages one by one — and this index tells you exactly where each topic lives.