DGCA RTR(A) Part 1 common mistakes
DGCA RTR(A) Part 1 · Understand the traps and how to avoid them.
Reading back a clearance by repeating only the numbers (for example "two five zero") while dropping the instruction verb, the unit, the callsign, or the condition attached to it, so the readback is incomplete.
Candidates memorise the numeric part because it feels like the 'real' content of the clearance, and under time pressure they treat the surrounding instruction words as filler. In practice the verb, unit, and aircraft identification are what make a readback legally and operationally complete, and examiners mark an incomplete readback as a failure even when every digit is correct.
What to do instead
Practise a fixed readback template: callsign, instruction verb, value with unit, any condition, then callsign again. Rehearse with a partner who deliberately gives long clearances containing a heading, an altitude, a speed, and a frequency, and refuse to speak until you have silently tagged each element. Record yourself and replay to check that every element appears in your readback in the same order as the clearance.
Using non-standard or plain-language phrasing in place of prescribed ICAO phraseology, such as saying 'please descend to' or 'turn left a bit' instead of the standard instruction wording, or inventing abbreviated forms of standard phrases.
Candidates whose first exposure to aviation English is general English carry conversational habits into the exam, and candidates who have listened to real-world recordings hear controllers and pilots using relaxed language and copy that. The exam tests the standard phraseology, not real-world shorthand, and non-standard wording is marked as a communication error even when the meaning is clear.
What to do instead
Build a personal phrase bank organised by function (level changes, heading instructions, frequency changes, approach clearance, emergency) and drill each until it is automatic. When you hear a non-standard phrase in a recording, write the standard equivalent beside it. In practice sessions, have your partner stop you the moment you use a conversational form and require an immediate correction.
Failing to read back an ATC clearance in full when the clearance contains a conditional or a route/level instruction, or omitting the readback of a clearance that changes a previously issued level or heading.
Candidates learn the readback rule as applying to 'numbers' and do not realise that the readback obligation covers the whole clearance, including conditions and the identity of the clearance being amended. They also assume a short clearance needs no readback, or that a clearance given as part of a longer transmission is exempt.
What to do instead
Learn the readback requirement as a complete list of what must be read back, and apply it mechanically: every clearance, every instruction that affects the flight path or level, and every conditional clearance. Practise with clearances that amend earlier ones, and always read back the amended value plus the fact that it is an amendment, so the controller can confirm the change was understood.
Treating a conditional clearance as effective immediately, or reading back only the condition and not the clearance itself, so the aircraft acts before the condition is satisfied.
The conditional clearance structure places the condition first and the clearance second, and candidates under pressure latch onto the first clause they hear. They also assume the readback of the condition implies acceptance of the clearance, and so they omit the second half of the readback.
What to do instead
Drill the structure explicitly: condition, then clearance, then readback of both in the same order. In simulation, have your partner issue conditional clearances that are not yet satisfied and require you to state aloud that you are holding and will not act until the condition is met. Test yourself on clearances where the condition is satisfied immediately versus later, and on what to do if the condition never occurs.
Confusing similar-sounding digits and letters when transmitting or reading back, particularly five/nine, two/three, and the standard spelling alphabet for letters, or using the wrong pronunciation of a digit group.
Candidates rely on context to disambiguate numbers, which works in a quiet room but fails in the exam's audio-only format and in real radio conditions. They also learn the spelling alphabet as a written list rather than as spoken sounds, so recall under time pressure produces substitutions such as confusing similar code words.
What to do instead
Drill digit pairs aloud in random order until discrimination is automatic, and use the standard pronunciation for each digit. For the spelling alphabet, practise by spelling your own callsign, waypoints, and arbitrary three-letter groups aloud, and have a partner write down what they hear so errors surface. Include group transmissions such as frequencies and squawk codes where digits run together.
Misunderstanding or misapplying the phonetic spelling alphabet, or failing to use it when a callsign or fix is ambiguous, and instead repeating the word in plain speech or spelling letters with ordinary letter names.
Candidates often know the alphabet passively from reading it but cannot produce it fluently, and they default to ordinary letter names when under stress. They also fail to recognise when the standard requires spelling, such as when a callsign is easily confused with another.
What to do instead
Practise producing the full alphabet aloud from memory in both directions, then in random order, then embedded in callsigns. Have a partner read out a callsign in code words and require you to write the letters, and vice versa. Include the standard practice of spelling a callsign when there is a risk of confusion, and rehearse the phrase that introduces the spelling.
Selecting or setting the wrong radio or navigation frequency, or failing to confirm that the selected frequency and the standby/active arrangement match the instruction, including forgetting to switch the active frequency after setting standby.
Candidates learn frequencies as numbers to memorise rather than as a procedure with a sequence of actions, and they skip the confirmation step. In the exam's equipment questions, the distinction between setting a standby frequency and making it active is often the exact point being tested, and candidates answer from memory of the number rather than the procedure.
What to do instead
Learn every frequency change as a fixed sequence: set standby, confirm the digits by reading them back, select active, confirm the change on the display, then report. Practise on a real or simulated radio until the sequence is automatic. For navigation equipment, learn what each unit displays and what confirmation looks like, and be able to describe the sequence in words for the oral or written question.
Answering licensing questions from general knowledge or from what 'must be true' rather than from the specific provisions of the RTR Rules, 2025, such as the validity period, the conditions attached to the licence, and the privileges and limitations of the holder.
Candidates treat the regulatory domain as common sense and do not study the rule text closely, so they guess at validity, renewal, and scope of privileges. The rules contain specific numbers and conditions that cannot be inferred, and a plausible-sounding answer is frequently wrong.
What to do instead
Work through the RTR Rules, 2025 provision by provision and build a one-page summary of every number, condition, and defined term. For each provision, write the question you would expect to be asked and the exact answer. Pay particular attention to validity, renewal, suspension, and the boundary between what the licence does and does not authorise, and test yourself on the boundary cases.
Failing to use standard distress, urgency, and safety prefixes correctly, or using the distress prefix for a situation that is only an urgency situation, and not knowing the correct order of the transmission that follows the prefix.
Candidates learn the three prefixes as vocabulary but not as a hierarchy with distinct triggering conditions and distinct transmission structures. Under exam pressure they pick the most dramatic-sounding prefix, and they cannot recall the order of the elements that follow it.
What to do instead
Learn the three prefixes as a decision tree with explicit trigger conditions, and learn the fixed structure of the transmission that follows each one. Practise by classifying scenarios aloud and then transmitting the full call. Include the cancellation and the correction procedures, and the rule about silence on the distress frequency, because these are commonly examined alongside the prefixes.
Losing situational awareness during a long or fast exchange, so the candidate responds to the last thing heard rather than to the whole transmission, or fails to notice that a clearance conflicts with the current assigned level or route.
Candidates focus on decoding words and have no spare capacity to track the flight state, so they miss the second instruction in a transmission or accept a clearance that contradicts what they were previously given. This is a capacity problem, not a knowledge problem, and it shows up as errors on compound clearances.
What to do instead
Build a habit of writing every clearance down in a fixed shorthand and reading it back from the paper, not from memory. Practise with compound clearances given at increasing speed, and after each one state aloud your current callsign, level, heading, and frequency before responding. Include exercises where the controller issues a clearance that conflicts with the previous one, and require you to query it rather than accept it.