We're looking at the index of the General Navigation manual — Page 573, Lesson 569

We're looking at the index of the General Navigation manual. This is the map of the entire syllabus, and I want to walk you through what it tells us about the course ahead. Let's start with the fundamentals. The index opens with the 1 in 60 Rule on page 189 — that's a core navigation calculation you'll use for track error and closing angles. Then under A, we have Aclinic Lines on page 62 — those are lines on a chart where magnetic dip is zero. Right after that, Agonic Line on pages 47 and 62 — that's the line where magnetic variation is zero, where true north and magnetic north align. We have the Air Almanac Extract on page 414 — that's the astronomical data you'll pull for celestial navigation. Airspeed Indicator Errors on page 105 — the instrument errors you must correct. Air Vector on page 127 — that's the aircraft's motion through the air, separate from ground movement. Angle of Dip on page 53 — the vertical angle between the horizontal and the magnetic field. Angular Distance and Angular Measurements on page 9 — how we measure positions on the sphere in degrees, minutes, and seconds. Annual on page 51 — that's the yearly change in magnetic variation. Antarctic Circle and Arctic Circle on page 11 — the latitudes at 66.5 degrees north and south. Antipodal on page 37 — points directly opposite each other on the globe. Aperiodicity on page 496 — the compass property of returning to north without overshooting. Apparent Solar Day on page 384 — the time between successive transits of the sun. Astronomical Twilight on page 425 — when the sun is 18 degrees below the horizon. AWR on page 481 — that's an acronym you'll meet in the radio navigation section. Azimuthal or plane Projections on page 283 — the chart projection family. Under B, Balancing the Drift on page 145 — how you correct for wind drift in flight. Under C, Calculation of True Altitude on page 115 — converting indicated altitude to true altitude using temperature. Calibrated Airspeed, CAS, on page 88 — airspeed corrected for instrument and position error. Cardinal Points on page 4 — north, east, south, west. Cartesian on page 7 — the coordinate system. Change of Magnetic Latitude on page 505 — how the compass behaves as you move toward the poles. Chart Projections on page 283 and Chart Symbols on page 228 — reading the map. Civil Day on page 384 — the 24-hour day we use. Civil Twilight on page 424 — when the sun is 6 degrees below the horizon. And Civil Twilight Tables from the Air Almanac — the tables you use to compute those times. Now, I want you to notice the structure. This index is alphabetical, but the page numbers are not sequential — that's because the book is organised by topic, not by alphabet. The index is your lookup tool. When you're in the exam and you need to find, say, the 1 in 60 Rule, you go to page 189. When you need the Agonic Line, you check pages 47 and 62 — two different contexts. Here's the key point for you as a professional pilot: this index tells you the full scope of what you must master. Navigation isn't just one skill — it's the 1 in 60 Rule for track corrections, the airspeed errors for instrument flying, the chart projections for map reading, the twilight tables for night operations, and the compass behaviour for magnetic navigation. Each of these is a separate tool in your navigation toolkit. The figures I have available — Figure 6.3 on page 114 shows the CRP-5 computer windows, Figure 6.4 on page 115 shows aligning FL200 with minus 25 degrees Celsius, and Figure 6.5 on page 115 shows CAS on the inner scale against TAS on the outer scale — those are the practical tools you'll use for the Calculation of True Altitude on page 115. That's the link between the index entry and the actual flight computer work. So when you see an index entry, don't just read the term — understand which part of the navigation system it belongs to. Is it about the earth's shape? The magnetic field? The chart? The instrument? The time? That's how you'll build the mental model you need for the ATPL.