The four-part call
Almost every first call has the same four parts, in this order:
- Who you call (the station).
- Who you are (your call sign).
- Where you are (position or stage of flight).
- What you need (the request or message).
Example: “Delhi Ground, VT-ABC, stand 12, request start-up.” Station first, then you, then where, then what you want.
The reply and the read-back
Air traffic control answers with the clearance or information. For items that affect safety, such as clearances, runway in use, altimeter settings and headings, you repeat the key parts back. A read-back shows both sides heard the same thing.
Example: “VT-ABC, taxi to holding point runway 27, QNH 1012.” You answer: “Taxi to holding point runway 27, QNH 1012, VT-ABC.”
Standard words that carry fixed meanings
| Say | Meaning |
|---|---|
| Say again | Repeat all or part of your last transmission. |
| Roger | I have received all of your last transmission. It does not mean yes. |
| Wilco | I understand and will comply. |
| Affirm | Yes. |
| Negative | No, or that is not correct. |
| Standby | Wait; I will call you. |
| Correction | An error was made; here is the right version. |
Practise the alphabet
You will spell call signs and place names all through the exam. Use the trainer below until the words come without thinking.
Tap a letter, say the word aloud, then tap again to hide it.
Habits that help on the practical
- Listen first. Check the frequency is clear before you press the button.
- Think before you speak. Know your whole message, then say it in one go.
- Speak slightly slower than normal, and keep a steady pace.
- Keep it short. Leave out courtesies that are not part of the phraseology.
Quick answers
What is a read-back?
It is when you repeat the safety-critical parts of a message so the controller can confirm you understood correctly.
Does “Roger” mean yes?
No. Roger only says you received the transmission. Use “Affirm” for yes.
Why is the order of a call fixed?
A consistent order lets the listener find the information fast, even on a noisy channel.
Answer questions on this topic, or run a full radio call out loud.
This guide is general study help written by RTR Exam. It is not an official publication of DGCA or ICAO. Confirm rules, fees, dates and syllabus with DGCA's latest notice.