Look at the entries under E and F — Page 535, Lesson 650

This is the index of the book — the map of the whole syllabus. I want to walk you through what it tells you, because it lays out the territory we're going to cover: mass and balance, and performance. Look at the entries under E and F. Under E, we have "Effect of Variable Factors on Landing Distance" — that's the study of what changes how far an aeroplane needs to roll out after touchdown. Then "Elevation" — that's your height above sea level, and it matters because it changes air density, which changes performance. Now the acronyms. EMD, EMDA, EMDR — these are all about runway distances. EMD is "Emergency Distance," EMDA is "Emergency Distance Available," and EMDR is "Emergency Distance Required." The distinction between available and required is a core idea in performance: what the runway physically offers you versus what the aeroplane actually needs. And there's "Emergency Distance Available" spelled out as a full entry too. Then "Endurance" — that's how long you can stay airborne on a given fuel load. "En route" — that's the phase of flight between departure and arrival. And "En Route And Descent Requirements" — the rules you must satisfy while cruising and coming down. "Equivalent Airspeed (EAS)" — that's a calibrated airspeed corrected for compressibility effects at altitude. It's a precise speed definition you'll need. "ETOPS" — Extended-range Twin-engine Operations, the rules that let a twin-engine aeroplane fly far from a diversion airfield. "Excess Power Available" and "Excess Thrust" — these are the margins of power or thrust above what's needed for straight and level flight. They're what drive climb performance. "Exhaust Gas Temperature" — that's an engine instrument reading, abbreviated EGT. Under F, we have "Factors Affecting Angle of Climb," "Factors Affecting Descent," "Factors Affecting Endurance," "Factors Affecting Range," "Factors Affecting Rate of Climb" — each of these is a dedicated study of what changes that particular performance parameter. "Factors to Be Accounted for" — that's about the things you must consider in a calculation. "Field Length Requirements" — the runway length you need for take-off and landing. "Field Limit Brake Release Mass" — the maximum weight at which you can release the brakes and still meet the field length limits. "Final En Route Climb Speed," "Final Segment Speed," "Final Take-off Speed" — these are the defined speeds for the final phases of the climb and take-off. "Fixed Pitch Propeller" — a propeller whose blade angle cannot be changed in flight. And "Flap Extended Speed" — the maximum speed at which you may fly with flaps out. That's the shape of the book. Now let's go into the first real topic.