ICAOICAO Annex 6
ICAO Annex 6 — Operation of Aircraft
Read the official ruleAnnex 6 governs how aircraft are operated: flight-crew duties, operator responsibilities, performance and equipment requirements, flight and duty time, and safety management. It's split into Part I (international commercial air transport — aeroplanes), Part II (general aviation), and Part III (helicopters). National operating rules (Parts 121/135, EASA Part-CAT/NCC) derive from it. *Summary only — consult ICAO and your national authority.*
This is an original plain-English explanation for training and reference, not legal advice and not for navigation. Always rely on the current official rule linked above. Last reviewed June 2, 2026.