SARPs — Standards and Recommended Practices

What Are SARPs

SARPs are the two-tier system ICAO uses to set international civil aviation requirements under the 1944 Chicago Convention. They are published as the 19 Annexes to the Convention and cover subjects from personnel licensing and airworthiness to air traffic services, aerodromes, and environmental protection.

How They Become National Law

SARPs are not directly enforceable law on their own; they take effect only when a member state adopts them into its own aviation regulations. This is why SARPs are often described as binding in intent rather than automatically binding.

Filing Differences

Under the Chicago Convention, a state that cannot or does not intend to comply fully with a Standard is expected to notify ICAO of the difference. These filed differences are compiled and published, giving pilots, airlines, and regulators visibility into where a country's rules diverge from the ICAO baseline — something flight crews are expected to check before operating into unfamiliar states.

Development Process

New or amended SARPs move through ICAO's technical panels and the Air Navigation Commission before adoption by the ICAO Council, with the cycle from proposal to formal adoption commonly taking around two years. Once adopted, an Annex amendment enters into force for all states unless a sufficient number formally object within a set registration period.

Why SARPs Matter

With nearly every country in the world an ICAO member, SARPs create a common technical baseline that lets aircraft, crews, and air traffic systems from different countries interoperate safely — the same reason a landing in Tokyo or Toronto uses recognizably similar instrument procedures, phraseology, and safety oversight structures. Many other standards in this knowledge base — from separation minima to navigation performance requirements — ultimately trace back to a Standard or Recommended Practice in one of the 19 Annexes.