DGCA Air Regulations: Aeronautical Communications Questions

Correct answer: B. 30 minutes of EAT

After radio failure, the pilot must arrive over the destination and land within 30 MINUTES of the EAT Expected Approach Time) or the last acknowledged EAT. ATC will hold other traffic and protect the airspace for 30 minutes. Squawk 7600, fly the FPL, and land within 30 minutes of EAT. This is per ICAO Annex 2 and DGCA procedures.

Correct answer: A. VOR radial

ATC identifies you on radar using SQUAWK IDENT — you press the IDENT button on your transponder and your blip flashes or appears distinctively on the radar scope. ATC does NOT ask for your VOR radial to identify you on radar that's a non-radar position report technique). Radar identification uses the transponder, not navaid information.

Correct answer: B. Proceed in accordance with the Flight Plan FPL)

In case of Radio Communication Failure RCF) in IMC, the pilot must PROCEED IN ACCORDANCE WITH THE FLIGHT PLAN. Squawk 7600 radio failure code) AND follow the filed FPL. ATC will clear the airspace based on the expected FPL routing and timing. Never deviate from the FPL during RCF in IMC — ATC is predicting your position based on it!

Correct answer: A. Land at the nearest suitable aerodrome maintaining VMC and inform ATC

In VMC with radio failure inside controlled airspace — squawk 7600 AND land at the nearest suitable aerodrome while maintaining VMC staying in good visibility). You have visual conditions so use them — land safely and quickly, then tell ATC what happened.

Correct answer: B. Three thousand five hundred

When transmitting altitudes or heights in aviation radio communication, you say them as whole numbers: 3500 = three thousand five hundred. This is one of the exceptions to the digit-by-digit rule used for other numbers. Altitude readouts use the natural spoken format to avoid confusion.

Correct answer: A. Readable but with difficulty

The readability scale goes from 1 to 5. Readability 3 = Readable but with difficulty. Think of it as a bad phone call where you can just barely understand the other person but have to concentrate hard. Scale: 1=unreadable, 2=barely readable, 3=with difficulty, 4=readable, 5=perfectly clear.

Correct answer: B. Try to get contact on other frequencies either ground or aircraft stations - Transmit blind indicating important details required 2 times

In IMC with radio failure, you should first try other frequencies AND also transmit blind talk even if you cannot hear a reply) with important details, at least twice. Think of it as shouting in a dark room — you cannot hear anyone but you still shout your location just in case someone hears you.

Correct answer: C. Continue to fly in VMC, land at the nearest suitable aerodrome, report its arrival

If you lose radio on an IFR flight but you are in VMC you can see outside — good weather), you should stay in VMC, land at the nearest suitable airport, and let ATC know you arrived. You have eyes and good weather — use them to land safely as soon as possible.

Correct answer: B. PAN PAN, spoken three times

PAN PAN said three times is the urgency signal. Think of it as the yellow alert — serious but not yet life-threatening. MAYDAY red alert) is for when lives are in immediate danger. PAN PAN means I have a serious problem but I am not about to crash right now.

Correct answer: C. You should maintain that airway by use of your own navigation equipment

Resume own navigation means ATC has pointed you in the right direction and now you must use your own navigation instruments to follow the airway. It is like a GPS giving you directions and then saying you know the way from here — now it is your job to stay on the route using your avionics.

Correct answer: B. Read back the mode and code to be set

When ATC tells you to set a transponder mode and code, you must read back BOTH the mode AND the code. This is like repeating your homework assignment back to the teacher so both of you confirm it is correct.

Correct answer: C. In the initial call to the aerodrome control tower and the approach control unit

Heavy aircraft only need to say Heavy in their INITIAL call to the tower and approach control. Think of it as the first introduction — you say your full title once when you first meet someone. After that, they already know you are heavy so you do not need to keep repeating it.