be1d066e___LPRs____English_For_Aviation__5
[0] PRONUNCIATION Assumes a dialect and/or accent intelligible to the aeronautical community. [1] Pronunciation, stress, rhythm, and intonation, though possibly influenced by the first language or regional variation, almost never interfere with ease of understanding. [2] Pronunciation, stress, rhythm, and intonation, though influenced by the first language or regional variation, rarely interfere with ease of understanding. [3] Pronunciation, stress, rhythm, and intonation are influenced by the first language or regional variation but only sometimes interfere with ease of understanding. [4] Pronunciation, stress, rhythm, and intonation are influenced by the first language or regional variation and frequently interfere with ease of understanding. [6] Performs at a level below the Elementary level. [5] 
Pronunciation, stress, rhythm, and intonation are heavily influenced by the first language or regional variation and usually interfere with ease of understanding.
ICAO Language Proficiency Requirements (LPRs) - English For Aviation
5