ATPL Communications (091 and 092): Readbacks and Standard Phraseology

Two Short Papers That Reward Exact Wording

EASA ATPL theory covers radiotelephony in two dedicated subjects: 091 VFR Communications and 092 IFR Communications. They are among the smallest papers in the syllabus, and that is exactly why they punish vague knowledge. Most questions come down to whether you know the exact standard call, the exact list of readback items, or the exact meaning of a standard word, and the answer options often differ by a single word.

The material is finite and pattern-based. The phraseology both papers draw on is defined in ICAO Annex 10 Volume II (communication procedures), ICAO Doc 4444 (the PANS-ATM phraseologies), and in Europe the SERA rules. Learn the patterns once and both exams draw from the same well. Our 091 VFR Communications guide and 092 IFR Communications guide cover how each paper is structured; this article walks through the phraseology itself.

What Must Be Read Back, Always

The core rule of the whole subject: the flight crew reads back the safety-related parts of ATC clearances and instructions transmitted by voice. The items on the list include:

• Route clearances, including a clearance direct to a waypoint
• Clearances to enter, land on, take off from, hold short of, or cross any runway
• The runway in use
• Level instructions, including restrictions such as "at or above" or "at or below"
• Heading and speed instructions
• SSR (transponder) codes, for example "squawk four two one six"
• Altimeter settings, for example "QNH one zero one three"
• Newly assigned frequencies after a "contact" hand-off
• Taxi instructions, with the taxiway designators in the order they were given

The authoritative lists live in ICAO Doc 4444 (4.5.7.5.1) and SERA.8015(e). Exam questions test both directions: which items require a full readback, and which calls can be answered with an acknowledgement alone.

"Roger" Is Not a Readback

Standard words carry defined meanings, and the exams test those definitions directly.

• Roger means "I have received all of your last transmission". Nothing more. It does not promise compliance and it never replaces a required readback.
• Wilco means "I understand your message and will comply with it". It answers an instruction that carries no readback items.
• Conversational fillers such as "okay" or "copy" are not standard words and cost marks in the exam and clarity on a real frequency.

A useful habit: information gets "roger", an instruction gets "wilco", and anything with numbers or a clearance in it gets read back in full.

Numbers: Niner, Tree, Fife, and Decimal

Numbers are transmitted digit by digit, and several digits have exam-favourite pronunciations from the ICAO table: 9 is spoken "niner", 3 is "tree", and 5 is "fife". The decimal point in a frequency is spoken "decimal", so 121.3 becomes "one two one decimal three".

Levels flown on standard pressure take the words "flight level" before the figures. "Flight level eight zero" is a valid readback; a bare "eight zero" is not. That distinction appears in questions and in the daily discipline of instrument flying.

Finish With Your Callsign

A readback is terminated by your own callsign, so the controller knows which station answered and can catch a wrong aircraft reading back someone else's clearance. Dropping the callsign, or burying it in the middle of the call, is one of the most common habits an examiner will pick on, and one of the easiest to fix.

Runway Phraseology That Trips Students

Runway calls carry the highest stakes, so the wording is strict:

• "Line up and wait" clears you to enter the runway and wait. It is not a take-off clearance. Read it back in full and hold position until you are cleared for take-off.
• The word "take-off" is only used when the take-off clearance itself is issued or cancelled. At all other times the word is "departure", which is why a controller asks if you are "ready for departure" but clears you "for take-off".
• Hold short and crossing instructions are always read back in full, with the runway identifier.

Distress, Urgency, and the Special Calls

The emergency and special-situation calls are short, and the exams expect precision:

• Mayday, preferably spoken three times, begins a distress call, followed by the distress message with as many of the required elements as time allows.
• "Minimum fuel" tells ATC the flight is committed to land at a specific aerodrome and can accept no additional delay. The controller acknowledges it and tells you what delay to expect; it is information, not a request for priority.
• "Go around" instructs an immediate missed approach, and the pilot reply is "going around" followed by the callsign.

Revise these separately from routine phraseology. They are small in number, they are easy marks, and mistakes in this area are the most avoidable ones.

How to Drill This Until It Is Automatic

Reading a phraseology table is not the same skill as producing the call under time pressure. What works:

• Practise the calls out loud so the patterns become natural, not just recognisable.
• Group calls by stage of flight (clearance, taxi, departure, enroute, approach) so the context stays attached to the wording.
• Close the loop: hear a clearance, read it back, and get corrected on what you missed.

That loop is what our free ATC communications simulator is built for. You fly 100 scripted scenarios from a glass-cockpit panel, listen to the controller, read each clearance back, and get per-item scoring against ICAO phraseology with notes on anything non-standard, including the "roger vs wilco" and "flight level" habits above. It runs in the browser with no sign-up. It is a practice aid rather than a complete 091 or 092 course, so use it alongside your ATO material and the official documents.

Key Takeaways

• 091 and 092 are small papers that reward exact wording, not general understanding
• Learn the mandatory readback list from Doc 4444 and SERA and apply it every time
• "Roger" confirms receipt, "wilco" promises compliance, and neither replaces a readback
• Numbers go digit by digit: "niner", "tree", "fife", "decimal", and "flight level" before the figures
• Every readback ends with your callsign
• Drill the calls out loud and close the loop with graded readback practice