Bring your navigation calculation
Stuck on time, distance, fuel or units? Photograph the question with Rapid Q, select Navigation, and ask the tutor to explain the formula and reasoning using the available subject books.
A free sample with reasoning
Original illustrative exercise / not an official exam question
What is the time required to fly 90 NM at 120 kt groundspeed?
- A. 30 minutes
- B. 45 minutes
- C. 60 minutes
Show the explanation
B. 90 ÷ 120 = 0.75 hours; 0.75 × 60 = 45 minutes. The stated groundspeed already accounts for motion over the ground.
How to practise this bank in BlueFlash
- Open the app and choose Exam mode.
- Select an available Air Navigation question bank appropriate to your course.
- Answer the question, then explain why your choice follows from the concept.
- Ask for clarification when you cannot justify an option. Open the relevant lesson when you need the foundations.
- Revisit the weak topic before trying another practice session.
A better habit for this subject
Write the units first. Distinguish groundspeed from airspeed and check whether the result is plausible before choosing an option.
Keep a reasoning log
For each mistake, record the topic, your original assumption, the corrected reasoning and the source that supports it. Re-test the concept with a different question. Recognising the wording of one item is not the same as understanding the subject.
What this page does not promise
The sample above is our own teaching exercise. We do not claim it appears in a current DGCA paper, and we do not publish an official answer key. Library availability varies; use the current official syllabus and suitable licensed study material to determine your scope.