013 lessons
Earth, latitude and longitude
Locate a point on an ellipsoid and distinguish angular position from surface distance.
EASA 061 · ATPL(A) syllabus topicsOpen chapterTHE YPI LEARNING LIBRARYEASA ATPL(A)
General Navigation.
Turn position and motion into a clear picture.
061 · EASA ATPL(A). Explore the chapters below, with visual explanations and original practice questions.
01 · Earth and direction3 chapters
023 lessons
Distance, departure and direction
Use nautical miles, meridians and local north consistently.
EASA 061 · ATPL(A) syllabus topicsOpen chapter033 lessons
True, magnetic and compass
Apply signed variation and deviation; understand why a compass can mislead.
EASA 061 · ATPL(A) syllabus topicsOpen chapter02 · Time and the Sun2 chapters
043 lessons
UTC, local mean time and the date line
Convert longitude to time without losing the calendar date.
EASA 061 · ATPL(A) syllabus topicsOpen chapter053 lessons
Solar time, sunrise and twilight
Explain why the Sun’s apparent motion and daylight vary with latitude and season.
EASA 061 · ATPL(A) syllabus topicsOpen chapter03 · Charts and routes5 chapters
063 lessons
Mercator charts and changing scale
Explain straight rhumb lines and calculate the cost of high-latitude stretching.
EASA 061 · ATPL(A) syllabus topicsOpen chapter073 lessons
Lambert conformal conic charts
Connect standard parallels, convergence and changing chart directions.
EASA 061 · ATPL(A) syllabus topicsOpen chapter083 lessons
Polar charts and grid navigation
Keep direction usable when meridians crowd together.
EASA 061 · ATPL(A) syllabus topicsOpen chapter094 lessons
Great circles and rhumb lines
Compare route length and track changes on a spherical Earth.
EASA 061 · ATPL(A) syllabus topicsOpen chapter103 lessons
Chart reading and position assurance
Read chart metadata and measure a route without confusing symbols, units or references.
EASA 061 · ATPL(A) syllabus topicsOpen chapter04 · Velocity and wind3 chapters
113 lessons
Air speed, ground speed and unit discipline
Choose the correct velocity for each navigation calculation.
EASA 061 · ATPL(A) syllabus topicsOpen chapter123 lessons
The forward wind triangle
Find a heading and groundspeed that actually produce the required track.
EASA 061 · ATPL(A) syllabus topicsOpen chapter133 lessons
Find wind from heading, track and GS
Recover the missing wind vector from measured aircraft motion.
EASA 061 · ATPL(A) syllabus topicsOpen chapter05 · Navigate in flight5 chapters
143 lessons
Dead reckoning and the navigation log
Propagate a known position while making uncertainty visible.
EASA 061 · ATPL(A) syllabus topicsOpen chapter153 lessons
Position lines and fix geometry
Understand why crossing angle matters more than a neat intersection.
EASA 061 · ATPL(A) syllabus topicsOpen chapter163 lessons
Track error, closing angle and the 1-in-60 rule
Turn a known position error into a justified correction.
EASA 061 · ATPL(A) syllabus topicsOpen chapter173 lessons
Intercept a track with controlled closure
Choose an intercept angle that closes the offset and leaves time to capture.
EASA 061 · ATPL(A) syllabus topicsOpen chapter183 lessons
Diversions and revised estimates
Build a usable new heading, time and position check from a reliable starting point.
EASA 061 · ATPL(A) syllabus topicsOpen chapter06 · Changing conditions and assurance1 chapter
193 lessons
Navigation in climb and descent
Integrate changing TAS and wind through a vertical profile.
EASA 061 · ATPL(A) syllabus topicsOpen chapter06 · Inertial and integrated navigation1 chapter
203 lessons
Navigation cross-checks and error diagnosis
Reconcile position, velocity, time and reference disagreements before trusting a precise display.
EASA 061 · ATPL(A) syllabus topicsOpen chapterYour learning, across devices.
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