If you’re a pilot flying international routes — or planning to — you’ve probably heard of the ICAO ELP certification. But what exactly is it, and what’s the difference between Level 4, 5, and 6?
I’m an active First Officer based in Japan, and I’ve been through this test myself. Here’s what you need to know.
What is the ICAO ELP?
The ICAO English Language Proficiency (ELP) certification is a mandatory qualification for pilots and air traffic controllers operating on international routes. It’s set by the International Civil Aviation Organization (ICAO) and assesses your ability to communicate in real aviation situations — not just recite phrases from a textbook.
Unlike TOEIC or TOEFL, this isn’t a written exam. It’s an oral test conducted face-to-face with an examiner, and it evaluates how you actually communicate under pressure.
The 6 Assessment Criteria
Your performance is scored on six dimensions:
- Pronunciation — Can the examiner understand you clearly?
- Structure — Do you use correct grammar and sentence patterns?
- Vocabulary — Can you express aviation concepts accurately?
- Fluency — Do you speak at a natural pace without excessive hesitation?
- Comprehension — Do you understand what’s being said to you?
- Interaction — Can you hold a real conversation and respond appropriately?
The key point: this test measures real communication ability, not just language knowledge.
Level 4 vs Level 5 vs Level 6 — What’s the Difference?
There are three levels you can achieve:
- Level 4 (Operational) — The minimum requirement for international operations. Must be renewed every 3 years.
- Level 5 (Extended) — A higher level of proficiency. Valid for 6 years before renewal.
- Level 6 (Expert) — The highest level. Permanent — no renewal required.
Most Japanese pilots hold Level 4. Level 5 requires significantly more preparation. Level 6 is rare among non-native speakers, but it’s not impossible — and if you achieve it, you never have to take the test again.
What Does the Test Actually Look Like?
The test typically includes three types of tasks:
- Picture description — You’re shown a photo or sequence of images and asked to describe what you see, then answer follow-up questions
- ATC communication scenario — A simulated radio exchange where you respond to ATC instructions
- Open conversation — The examiner asks about your experience, opinion on aviation topics, or hypothetical situations
The questions often connect: a picture of an emergency situation might lead to “Have you ever experienced something like this?” or “What would you do if…?”
How to Prepare
Based on my own experience and reports from other pilots, here’s what actually works:
- Study real exam reports — Knowing what topics and questions actually appeared in past tests is the most efficient preparation. Generic aviation English textbooks won’t prepare you for the specific scenarios that come up.
- Practice picture description out loud — The picture description section trips up many pilots because they try to translate from Japanese in real time. Practice describing images spontaneously in English until it becomes natural.
- Build aviation vocabulary in context — Focus on words you’d actually use to describe emergencies, weather, ATC procedures, and aircraft systems.
- Output practice every day — Passive reading and listening isn’t enough. You need to speak English about aviation topics regularly.
Where to Start
The single most useful resource I’ve found is reading real exam reports from pilots who’ve already taken the test. Knowing that certain scenarios come up repeatedly, and what questions follow them, fundamentally changes how you prepare.
That’s exactly what ELP Review is built around — a growing archive of real exam reports from pilots across Japan and Asia, submitted after taking the test. Browse the reports, see what’s actually being asked, and prepare accordingly.