Flight computer trainer
The E6-B / CRP-5 calculations at the heart of the DGCA Navigation paper — wind triangle, true airspeed, density altitude, fuel and time — as a fast interactive tool, with practice problems worked out step by step.
Studying navigation? Work through the Air Navigation lesson, or try the ASA CX-3 emulator for the classic interface.
How it works
- 01
Pick a calculation
Wind triangle, TAS and density altitude, fuel, speed-distance-time, or unit conversions.
- 02
Enter your numbers
Results update live as you type, in clean cockpit-style readouts.
- 03
Drill in practice mode
Generate fresh problems and reveal the full working — the way to make the method automatic.
Common questions
Is this a CX-3 or E6-B emulator?+
It performs the same E6-B / CRP-5 calculations you'll use for the DGCA Navigation paper, as a modern interactive tool built by us. If you specifically want the ASA CX-3 interface, we've embedded that separately on the CX-3 emulator page.
How accurate are the density altitude and TAS figures?+
They use the standard rule-of-thumb approximations taught for ground exams (about 118.8 ft per °C above ISA, and TAS rising ~2% per 1,000 ft of density altitude). They're ideal for learning and cross-checks, not a substitute for certified performance data.
Can I use this in the actual DGCA exam?+
No — exams require the approved manual flight computer. Use this to learn the methods and practise quickly; then make sure you're fluent on your physical CRP-5/E6-B for the exam itself.
Which lesson does this go with?+
It pairs with the Air Navigation strategy lesson in Stage 3 of the Route, where the wind triangle and these calculations are explained in context.