Look at the first entry: "Autothrottle System" — page 391 — Page 653, Lesson 755

This is the index of the book — the table of contents. So what I want to do is walk you through what this page actually is, because it's a map of the entire instrumentation syllabus. You're looking at the alphabetical index, starting with the letter A and moving into B and C. Every single entry here is a technical term from the book, and the number next to it is the page where that term is explained. Let me show you how to read this. Look at the first entry: "Autothrottle System" — page 391. Then "Autothrottle Disengage Switches" — page 395. Then "rottle Disengage Light" — page 396. Notice the pattern: the system is introduced first, then the switches that control it, then the light that tells you it's off. That's the logical order the book teaches in — system, then control, then indication. Now, I want to point out some important terms you'll meet. "Avionics Bay" — page 8. That's the compartment in the aircraft where the electronic equipment is housed. "Azimuth" — page 214. That's a navigation term, the angular measurement in the horizontal plane. And "Azimuth Misalignment" — page 238. That's when the azimuth reading is not correctly aligned — an error condition. Moving into the B section. "Back Scattering" — page 257. That's a radar term — energy reflected back toward the source. "Ball-in-tube Inclinometer" — page 187. That's the instrument that shows bank — the little ball in a curved glass tube. "Bank Angle" — page 416. The angle of the aircraft's roll. "Barometric Error" — page 61. An error in the altimeter due to pressure setting. "Basic T" — page 5. That's the standard instrument layout — the arrangement of the six primary flight instruments. Now, some of these are electronic and computer terms. "BASIC" — page 310 — that's a programming language. "BINARY" — page 307 — the base-2 number system computers use. "BIOS" — page 309 — Basic Input Output System, the firmware that starts the computer. "BIT" — page 100 — and "BITE" — page 100 — Built in Test Equipment. That's the self-test system in the avionics. And "C++" — page 310 — another programming language. I also want to highlight "Bimetallic strip" — page 26. That's a temperature-sensing element made of two different metals bonded together — they expand at different rates when heated, which bends the strip. And "Bleed Air" — page 29 — that's compressed air tapped from the engine compressor section, used for various pneumatic systems. Now, a few of these are worth special attention because they're common in the exam. "Calibrated Airspeed (CAS)" — page 42. That's indicated airspeed corrected for instrument and installation errors. "Capsule" — page 41 — that's the aneroid capsule inside the altimeter that expands and contracts with pressure. "Caging Device" — page 156 — that's the mechanism that locks a gyroscope in place. "Cable Length Compensation" — page 267 — that's correcting for resistance in the wiring of a remote-reading instrument. And I want to point out "Bounded Errors" — page 238. That's a specific type of error — one that stays within a defined limit, it doesn't grow without bound. And "Blockages" — page 86 — and "Blockages and Leaks" — page 65 — those are failure conditions in the pitot-static system. So this page is your reference tool. When you're studying, you use this index to find where each term is taught. The page numbers tell you the order — and the order matters, because each concept builds on the previous one. That's what this index is for.