Aviation Splits Level 6 Into Its Own Separate Test

Most language exam families are one test with a range of results. Aviation built something different.

The ICAO recognised suite is three tests, and the top level has an exam entirely to itself.

SpeakShark is free for the skill the top aviation test actually measures, three AI conversation sessions a day with no card.

In this guide: three tests · why split · the inversion · confirmed not graded · scale · the discrepancy · what to aim at · limits · method · FAQ

Key takeaways

• Three tests: ELPAC ATC, ELPAC pilots, and a separate ELPAC level 6.
• The first two assess ICAO levels 4 and 5. Level 6 has its own exam.
• Level 6 rewards adapting to a weaker speaker, not displaying range.
• ICAO language proficiency requirements have been in place since 2011.
• Published figures: 66 organisations, 22,000+ candidates, 300 examiners, 91% first attempt.

Three tests, not one

Two things are unusual here at once.

The suite splits by role. Controllers and pilots do the same job in one sense, keeping an aircraft safe over a radio, and completely different jobs in another. One is managing many aircraft from a fixed position; the other is flying one of them. The test acknowledges that.

The top level splits off entirely. Levels 4 and 5 are outcomes of an exam. Level 6 is a separate exam.

Nothing else in this series does that. IELTS awards 9.0 through the same paper that awards 5.0. Cambridge publishes separate exams by level, but each of those still grades a range around its level. Here the top band has been lifted out of the scale and given its own instrument.

Why Level 6 is separated

The answer is in what ELPAC says its level 6 test measures.

Traditional language exams, it observes, award the highest scores to candidates who impress with the range of their vocabulary or the complexity of their grammar.

Its level 6 test does something else. It assesses the ability to:

• adapt to a less proficient speaker, or to a speaker from a different cultural background
• deal with misunderstandings
• identify and resolve ambiguity

Those are not harder versions of what levels 4 and 5 measure. They are a different construct, and a different construct needs a different test.

We covered what that inversion means for a candidate in ICAO Level 6 rewards adapting to a weaker speaker.

The inversion at the top

It is worth sitting with how strange this is compared with every academic exam.

In an academic speaking test, the way to a top band is to show what you have: wider vocabulary, more complex structures, more sophisticated organisation. That is what Cambridge speaking criteria by level rewards, and it is a reasonable design for its purpose.

In aviation at the top level, the way to expert is to make yourself understood by somebody who is struggling, and to notice and fix a misunderstanding before it matters.

Those two designs can pull in opposite directions in the same person. A speaker whose instinct under pressure is to reach for a more precise but less common word is doing the right thing in one exam and the wrong thing in the other.

The nearest thing to this outside aviation is the Cambridge Interactive Communication criterion, which credits keeping the exchange going rather than performing alone, covered in Interactive Communication.

Confirmed rather than graded

The structural point is confirmed by how a national authority actually administers the top level.

The UK Civil Aviation Authority's approved examiners can award Level 6 only, and cannot upgrade a candidate from Level 4 or 5. If an examiner has doubts about any element of the descriptors, no level is recorded at all and the candidate is referred for formal assessment. We work through that in the examiner must have no doubt.

So both the test provider and the regulator treat Level 6 as a confirmation rather than a position on a scale. The provider gives it a separate exam. The regulator gives it a separate, all-or-nothing procedure with its own evidence requirements, covered in aviation's top English level asks about your childhood.

Two independent bodies arriving at the same structural treatment is stronger evidence about what Level 6 is than either would be alone.

How widely it is used

ELPAC publishes four figures about its own reach:

These are provider-published numbers, not audited ones, and the last is the one to read carefully.

A 91 per cent first attempt pass rate is not evidence that the test is easy. Aviation candidates are already licensed or in training, already working in an English-medium technical environment, and generally sitting the test because their employer or authority requires it at a point when they are ready. A high pass rate in a screened population says less than the same rate in an open one.

ICAO language proficiency requirements were put in place in 2011, with ICAO Doc 9835 as the reference standard, so the regime has more than a decade of operation behind it. That is longer than most sectors in this series have had a formal language standard at all.

One discrepancy to know about

Two published statements do not fully agree, and both are worth having.

The ICAO list of recognised tests shows recognition for ELPAC ATC and ELPAC Pilot.

The ELPAC site describes the ATC test as fully recognised by ICAO for being in compliance with ICAO Doc 9835, and says the pilot test is being reviewed by ICAO.

We are not going to pick one. They may be describing different stages of the same process, or the same fact at different times. What matters to a candidate is that recognition status is a live question worth confirming with your own national authority before booking, because the authority that reads your certificate is the one whose view counts.

What to actually aim at

The honest answer is not Level 6, and it comes from the regulator rather than from us.

The UK CAA states that Level 6 proficiency is not an essential requirement for successful aeronautical communication, and quotes ICAO Doc 9835 that attaining it should be considered beyond the realistic expectations of most second or foreign-language learners.

Level 4, Operational, is the working requirement. Level 5 is Extended.

• Aim at 4 or 5 unless your linguistic history makes 6 realistic.
• Take the test for your role. Controllers and pilots sit different exams.
• Check recognition with your own authority before booking.
• Expect a validity period. Even Level 6 expires, at nine years for UK controllers.
• Practise the interactive skill, because that is what the scale is built on.

The ability to notice that somebody has not understood you, and to fix it without a script, only develops against another speaker. Role play scenarios and a daily speaking partner are the practical routes, testing your speaking level free shows where you stand, and CEFR levels for speaking explains the general scale. Nine years for controllers covers validity, cabin crew interview questions covers the adjacent aviation role, and English certificates that expire compares validity across bodies.

What we could not verify

We did not read ICAO Doc 9835. It is cited by ELPAC and by the UK CAA, and we have used their accounts of it.

We did not verify the usage figures independently. All four are published by the provider.

We did not resolve the recognition discrepancy. Both statements are reported as found.

We did not sit or observe any of the three tests. Task types and timings are not described here.

We did not check the levels 4 and 5 descriptors. The UK CAA page we read reproduces the expert level only.

This is not licensing advice. It is a reading of a test provider's published description alongside a national authority's guidance, both linked below.

How we researched this guide

We came back to this one with a gap we had written down and could not close. An earlier round recorded that the ICAO level scale itself was missing, that the ICAO documents page was genuinely dead rather than bot-blocked, and that the way in would be a national aviation authority that republishes the scale.

That is exactly what happened. The UK Civil Aviation Authority publishes the expert level descriptors in full, and its procedural rules turned out to say as much about the structure of the scale as the descriptors do.

Recording the gap in that form is what made it closable. A note saying ICAO scale missing would have sat there. A note naming the route back in, a national authority that republishes it, is a task rather than a regret.

The structural finding came from putting the two sources together. ELPAC gives Level 6 its own test; the CAA gives it its own all-or-nothing procedure. Neither is describing the other, and both are treating the top level as a different kind of thing from the levels below it.

We left the recognition discrepancy open, as an earlier round had decided to. Two published statements disagreeing is information, and picking the more convenient one would have destroyed it.

Practise speaking, from SpeakShark

SpeakShark is an AI English speaking practice app, and aviation's top level describes what we are actually for better than most exam criteria do.

Adapting to somebody who is struggling. Noticing a misunderstanding. Resolving an ambiguity before it becomes a problem. None of those is knowledge, and none of them improves by reading.

You talk, the AI answers what you actually said, and you get speaking feedback while the conversation is still running. The free tier gives basic feedback; the detailed pronunciation and grammar breakdown is on Premium.

Being straight about the limits: a free session runs five minutes with four turns, we issue no certificates, and we do not teach radiotelephony phraseology or assess against the ICAO scale. We are not affiliated with ELPAC or ICAO.

Start free with three sessions a day and no card. Paid sessions run ten minutes with unlimited turns. Limits are on the pricing page, and how it works walks through a session. Sign up here if handling a real conversation is what you need to practise.

We are a speaking improvement tool. We are not an exam preparation provider, and we are not affiliated with Cambridge English, the IELTS partners, Pearson or any exam board. For test format, booking and official practice material, go to the exam body directly. Use SpeakShark to make your spoken English stronger, and use official material to learn the test.

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Sources

• ELPAC, English Language Proficiency for Aeronautical Communication: the three test suite of ELPAC ATC, ELPAC pilots and a separate ELPAC level 6, the statement that ATC and pilot tests assess ICAO levels 4 and 5, the description of level 6 as assessing adaptation to a less proficient speaker, handling misunderstandings and resolving ambiguity rather than rewarding range of vocabulary or complexity of grammar, the 2011 introduction of ICAO language proficiency requirements, ICAO Doc 9835 as the reference standard, and the published figures of 66 organisations, more than 22,000 candidates, 300 accredited examiners and a 91 per cent first attempt pass rate, alongside the statement that the ATC test is fully recognised and the pilot test is being reviewed by ICAO
• UK Civil Aviation Authority, language proficiency: the expert level descriptors from AMC 2 FCL.055, the rule that any doubt means no level is recorded, the statement that an approved examiner can award Level 6 only and cannot upgrade from Level 4 or 5, and the statements that Level 6 is not essential for successful aeronautical communication and is beyond the realistic expectations of most second or foreign-language learners
• UK Civil Aviation Authority, ATCO English language proficiency endorsements: the nine year validity period for a Level 6 endorsement
• Council of Europe, CEFR Table 1, common reference levels global scale: the general level scale used for comparison across this series

FAQ