NAV · CPLGrid subject guide
DGCA Air Navigation exam preparation.
Build your Air Navigation knowledge through regular practice across navigation theory, calculations, flight planning and radio navigation topics. Use CPLGrid to practise by subject and review the areas where you need more work.
- active questions with explanations
- 1,037
- active questions with explanations
- mock tests in exam format
- Timed
- mock tests in exam format
- mistakes, bookmarks and analytics
- Revision
- mistakes, bookmarks and analytics
What to focus on
A clear way to organise your revision.
Time, speed, distance and wind problems
Flight planning, charts and plotting
Radio navigation and related instruments
Exam-style MCQ practice and revision
How to use CPLGrid for this paper
Learn. Practise. Test.
Learn
Use the current syllabus and your study material to understand the concept before relying on question practice.
Practise
Work through CPLGrid questions in focused sessions and save difficult questions for later revision.
Test
Use timed mock tests to check recall, speed and accuracy under exam-style conditions.
Study guide
Build the concepts behind Air Navigation questions
Use this topic map to structure revision. Work from the principle to the calculation, then check units, sign conventions and whether the result is physically reasonable.
Navigation fundamentals
Review direction, position, great-circle and rhumb-line concepts, chart conventions, convergency and the relationship between true, magnetic and compass directions.
Time, speed and distance
Practise time–speed–distance calculations with consistent units. For wind problems, separate along-track and cross-track components before calculating groundspeed and drift.
Flight planning and charts
Read chart scales, track and distance, fuel/time entries, waypoints and planned altitude. Keep intermediate calculations visible so arithmetic errors are easier to find.
Radio navigation
Understand what each aid measures, what its indications mean, and the limitations caused by geometry, coverage, station errors and instrument interpretation.
Example concept check
A basic time–speed–distance question asks for time when distance and groundspeed are known. Which relationship applies?
Answer: Time = Distance ÷ Groundspeed
Keep distance and speed in compatible units. For example, 120 NM at 120 kt takes 1 hour. Use groundspeed for time en route; airspeed alone does not account for the wind.
Frequently asked questions
Questions about this subject
What is Air Navigation in DGCA CPL preparation?+
Air Navigation covers the knowledge and calculations a pilot uses to plan and conduct a flight, including position, direction, time, distance, wind and navigation systems. Always use the current DGCA syllabus as the final reference for examination requirements.
How should I prepare for Air Navigation?+
Learn the concepts first, then practise calculations regularly. Mix chapter-wise practice with timed mock tests and review every incorrect answer so that repeated mistakes become revision targets.
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