7 questions on this topic, recalled by candidates after DGCA sittings between 2021 and 2026. Together they were asked 16 times; the most repeated come first. Pick a year to see only what was asked that year.
A. Green flashes alternating with white flashes
A land aerodrome beacon shows green flashes alternating with white (or white only), 20-30 flashes a minute. A water aerodrome beacon uses yellow.
C. D
Series D covers changes at military-controlled airfields used by domestic flights. Series A is international distribution; B is for information valid more than 30 minutes but less than 2 hours.
B. B
Series B carries information valid for more than 30 minutes but less than 2 hours. Series A is for information of international importance lasting more than 2 hours.
A. Fixed blue lights
Taxiway edge lights show blue and taxiway centre-line lights green. Runway edge lights are white; threshold lights green; runway end lights red.
B. Green
Fixed unidirectional green lights, showing green towards the approach. Runway end lights are red.
B. Yellow
Taxiway, runway turn-pad and stand markings are yellow; runway markings are white. In India, apron safety lines are red.
A. C
Series A carries information of international importance valid for more than 2 hours; Series B shorter international items with limited distribution; Series C changes at locations used by domestic flights only; Series D military-controlled airfields used by domestic flights.
These are candidates' recollections, not official DGCA papers: wording can differ from the paper as set. Every answer was checked against the DGCA CARs, AIP India, ICAO documents or worked calculation (independent check completed 17 Oct 2026). Spotted a mistake? Tell us and we will check it against the source.