Navigation is the paper that punishes guesswork. This is the whole thing — 6,986 questions across 155 chapters, from the shape of the earth to a full flight plan, with every numerical solved step by step rather than just answer-keyed.
The paper
Navigation is one of the two 100-question DGCA papers. That is roughly 1 minute 48 seconds a question, and a meaningful share of them are numericals you cannot do in your head — which is why speed on the standard formulae, not recall, is what actually gets marked.
What's inside
Every question is auto-graded, tagged with the chapter it came from and marked Theory or Numerical. Wrong answers are filed in your mistakes bank automatically, per subject.
The core of the paper: the form of the earth, great circles, rhumb lines and small circles, departure and change of longitude, convergency and conversion angle, the triangle of velocities, scale and chart projections, plotting, time and time zones, and the CRP-5 / CX-3 work that sits under all of it.
Everything on the panel and the theory behind it — the pitot-static system, ASI, altimeter, VSI and machmeter, the IAS–CAS–TAS chain, gyroscopes and the artificial horizon, direct and remote indicating compasses, EFIS, EICAS, TCAS and the INS/IRS/FMS family.
Ground and airborne aids end to end: radio wave theory and propagation, ADF and NDB, VOR, DME, ILS, primary and secondary radar, airborne weather radar, GNSS, RNAV, MLS and VDF — including the range, accuracy and error questions DGCA repeats.
Take-off, climb, cruise, descent and landing performance, the power and drag curves, the speed set, flap effects, aerodrome and runway considerations, and the Class A and Class B performance rules applied to the graph and table work the paper sets.
Before you start
Air Navigation is examined as a working paper. You are given a position, a track, a wind or a chart and asked to produce a number — so knowing that convergency exists is worth nothing if you cannot get to ch.long × sin(mean lat) under time pressure.
The bank is built around that. Questions are grouped by the chapter that generates them, so you can drill one formula until it stops costing you time, then move on.
A worked numerical here means a formula box with the governing equation on its own, then a numbered method that goes from the given data to the answer. No skipped algebra, no "hence".
Where a printed answer key is aeronautically wrong — and several circulating keys are — the solution teaches the correct method and flags the discrepancy instead of quietly repeating the error.
The most common losses in this paper are not conceptual. They are minutes read as degrees, an east–west change of longitude signed the wrong way, departure computed at the wrong latitude, and TAS used where groundspeed was wanted.
Because every question carries its chapter, a run of wrong answers tells you which of those it is rather than just that "navigation is weak".
Take one chapter in practice mode with the working visible until the method is automatic. Switch that chapter to test mode — only test and exam answers move your readiness estimate. Wrong answers land in the mistakes bank on their own.
When several chapters hold, sit a full 100-question paper on the clock. That is the only honest rehearsal for a three-hour sitting.
Inside a question
Every MCQ is graded the moment you answer it, and the explanation shows the reasoning rather than just the correct letter.
Pick an option and get instant right or wrong with the correct answer revealed — except in exam mode, which reveals nothing until you submit.
Numericals carry the governing equation on its own line, so you can revise by formula before you revise by question.
Worked step by step from the given data to the answer, with nothing skipped.
Every question carries its chapter and whether it is theory or a numerical, so a wrong answer tells you what to revise.
An aircraft flies from A (60°N 010°W) to B (60°N 020°W). The departure between A and B is:
Worked solution
Questions about the questions
The other 14
6,986 Air Navigation questions, 155 chapters and a full 100-question paper — waiting, and costing nothing.