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An engine failure or inflight shutdown (engine fire or severe damage).
The primary goals of practicing the Sierra Pattern in a commercial airliner like the A320 include:
In the world of Air Traffic Control (ATC) and avionics, "Sierra" is the phonetic code for the letter . On the A320, one of the most critical "Sierra" patterns isn't painted on the fuselage; it is the Squawk Code . sierra pattern a320
The Sierra Pattern is a standardized simulator training profile designed to test a pilot's capacity to handle compounding abnormalities while maintaining precise aircraft control. Named after the traditional "S-pattern" instrument training geometries, the modern Airbus Sierra Pattern focuses heavily on task prioritization, crew resource management (CRM), and the fluid transition between fully automated flight and raw-data manual flying.
In an Airbus A320, the flight control computers provide envelope protection under Normal Law. If a failure drops the aircraft into Alternate or Direct Law, these protections are lost or modified. The Sierra Pattern ensures that pilots retain the fundamental stick-and-rudder skills required to manually stabilize a 70-ton airliner without digital safeguards. 3. Task Prioritization (Aviate, Navigate, Communicate)
The deployment of thrust reversers is strictly forbidden during a touch-and-go. If the PF accidentally opens the reverse thrust blocker doors, the crew is committed to a full-stop landing and cannot take off again due to the mechanical transition time required for the doors to restow. This public link is valid for 7 days
At the expiration of the 45-second timer, the PF initiates a 20∘20 raised to the composed with power bank turn toward the base leg and calls for FLAPS 2 .
Cruise FL350 ---> Idle Descent ---> [Sierra Pattern: Level segment at 10,000ft] ---> Idle Descent ---> IAF at 3,000ft
The "standard" S-1 pattern typically involves the following: Can’t copy the link right now
), the pilot calls "Flaps 1." The slats extend, and the pilot observes the change in pitch attitude required to maintain level flight.
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A large commercial profile makes the aircraft an easy target if it loiters on a standard civilian glide path. Anatomy of the Sierra Pattern