Sierra Pattern A320 -

While the term “Sierra Pattern” might sound like classified military jargon or a cryptic line from an aviation manual, it is actually a logical, geometry-based flight path designed to transition an A320 from a low-energy, landing configuration back to a safe altitude for re-entry into the traffic pattern.

To ensure accurate FMS programming:

Note: These values fluctuate based on aircraft weight, center of gravity, and environmental conditions. Common Pilot Errors and How to Avoid Them

For A320 pilots, mastering the Sierra Pattern means respecting the automation, flying a smooth offset climb, and always keeping the runway in sight until you are safely re-sequenced. Whether you are a trainee in a full-motion simulator or a line Captain flying into London City or LaGuardia, the "S" shape should be as instinctive as flaring for landing.