Talk to any check captain about why an otherwise sharp first officer keeps getting written up, and three times out of four it's the same answer: radio work. Not the flying — the flying is fine. It's the moment the frequency goes hot and a thirty-something pilot with two thousand hours suddenly can't get a clean readback out without three "say agains" from approach. Aviation English on the radio is its own skill, and it isn't taught well almost anywhere in the world.
The frustrating thing is that radio comms are the most predictable English you'll ever use in your career. There are perhaps two hundred phrases, an ICAO-approved way to say every number, and a structure to every transmission. Once you internalise it, the workload of speaking on frequency drops to almost nothing — and your hands and eyes get to do the flying. Here's how to get there.
Use Standard Phraseology — Plain English Is the Problem
Pilots whose English is otherwise excellent often radio worse than pilots whose English is poor, because they default to conversational English. The frequency is not a place for natural English. It's a place for ICAO Doc 4444 phraseology, which exists precisely because everyday English is ambiguous, regional, and slow.
"We'll go ahead and start our descent now if that's alright with you" is a perfectly polite sentence and completely wrong for the radio. "Request descent" is the correct one. Two words, no ambiguity, no controller having to translate. Every ATC transcript reviewed after an incident reads the same way: the standard call is short, clear, and unmistakable. The non-standard call is what triggered the next four exchanges. Learn the standard phrases for what you do every day — taxi, push, cleared, established, descending, levelling off, going around. Drill them until the standard version is the one your mouth produces under pressure, not the conversational version you'd use over a coffee.
The Readback Rule — Repeat What Actually Matters
Every controller in the world wants to hear five things repeated back: the runway, the squawk, the level, the heading, and the frequency. If your readback contains those five items, said in the same order they were given, you'll never get told off for poor readback.
What gets pilots in trouble is paraphrasing. "OK, climbing up to six thousand" sounds fine but reads like noise to a controller — they want "Climb flight level six zero", in those exact words. Same instruction, dramatically clearer. And critically: read back what you were told, not what you wish you were told. If the controller says "expect lower in five", do not read back "descend"; read back "expect lower in five". Mishearing an instruction and reading it back wrongly is the single most common factor in level busts, and it's almost always a language slip, not a hearing one.
Numbers Are the Hard Part — Speak Them the ICAO Way
Numbers cause more confusion on frequency than any other category of language. ICAO has a way to say every digit, and it isn't optional. Nine is "niner". Five is "fife". Three is "tree". They sound a little ridiculous in your head — they exist because nine and five collapse into "noi" or "fie" across radio static, and "tree" separates three from a Russian- or French-accented "free".
Levels, altitudes, headings, and frequencies all have their own conventions. FL360 is "flight level three six zero", not "thirty-six thousand". A heading of 030 is "heading zero three zero", not "thirty". 118.1 MHz is "one one eight decimal one", not "one eighteen point one". Practise reading aloud from a chart at home — pick a STAR, read every number on it the ICAO way, then check yourself against a recording. Ten minutes a day for two weeks fixes ninety percent of pilots' number problems.
Slow Down — Then Slow Down Again
Native English-speaking pilots are the worst offenders here. London Heathrow Tower at peak speaks at a speed even Australian pilots ask for clarification at, and they reduce the entire international standard to a competitive sport. The solution is not to keep up. The solution is to speak at the speed of the listener whose English is most likely to be challenged — which on any international frequency is most of the room.
Aim for around one hundred words per minute on the radio. That's roughly half conversational speed. It feels painfully slow when you're learning it. It also means controllers in Frankfurt, Dubai, and Lagos understand you on the first call. A slow, clean transmission saves time overall because nobody has to ask you to repeat it.
Listen Like You're Filtering for Your Callsign
The hidden half of radio work isn't talking — it's listening. On a busy frequency you might hear forty calls before your callsign comes up. The pilots who lose situational awareness are the ones who tune out the others. The pilots who fly clean are the ones tracking the whole picture: who's ahead of them in the descent, who's been told to expedite, who got vectored off the procedure for traffic. None of that is in your clearance — all of it is on the frequency.
Train this on the ground. Play a LiveATC stream of a busy airport for thirty minutes while you do something else — cooking, ironing, whatever. Don't try to follow every call. Just track a single callsign through the frequency from check-in to handoff. You'll be amazed how much extra information sits in the calls that aren't directed at you, and how quickly your scan improves on the actual flight deck.
Strong radio English isn't a talent — it's a trained skill, and it transfers directly to every other element of your career, from briefings to checkrides to the simulator. Our Aviation English course at Kensington English drills standard phraseology, readbacks, number conventions, and listening discipline with live instructors and real-frequency recordings — the same way the regulators actually test you for ICAO Level 4 and above.
