DGCA ATPL Navigation and Radio Aids Oral (Viva) Examination Questions Bank | Latest

After taking reviews from various sources we have prepared the following list of questions which are generally asked in DGCA ATPL oral exam (Air Navigation and Radio Aids)

DGCA atpl oral questions



  1. Differentiate between GPWS and EGPWS.
  2. How does GPWS and EGPWS work? – also explain about the warnings given by both
  3. What is the difference between RNP and RNAV approaches?
  4. Is RNP 1 or RNP 10 better?
  5. What is Grid MORA?
  6. What is CANPA?
  7. What is the difference between CANPA and CDFA approach?
  8. What is the difference between Radio Altimeter and Radar Altimeter?
  9. What do you understand by RVSM contingencies?
  10. What all types of projections can be used for navigation at equator?
  11. How many satellites are required for RAIM?
  12. What all airspaces are there in India?
  13. What is RVSM? What are the requirements to enter in RVSM airspace?
  14. What is ETOPS?
  15. What is EDTO and different extensions?
  16. Explain working of TCAS is brief.
  17. What is the difference between TCAS 1 and 2?
  18. Explain radio failure procedure for IFR and VFR flights.
  19. State requirements for ILS Cat 3 b
  20. Is middle marker mandatory for ILS approaches?
  21. What is predictive wind-shear?
  22. How do you navigate in cae of triple ILS failure?
  23. Why is 50 feet added to MDA to calculate DDH in CANPA approach?
  24. What do you know about FANS?
  25. Why is instrumentation for RNP-10 more complex that RNP-5?
  26. Differentiate between adequate and suitable airports.
  27. How to do CANPA approach if FAF is not published?
  28. How is FAF crossing height determined?
  29. How can the height of cloud base be calculated using weather radar?
  30. How do you navigate on poles?

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Also Read: How is RNP approach different from RNAV approach?

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