A320 [cracked] | Sierra Pattern
Auto brakes must remain OFF during a touch-and-go sequence to ensure the aircraft does not aggressively decelerate upon touchdown.
Because the A320 utilizes advanced fly-by-wire technology and auto-trimming, pilots must memorize these precise physical target metrics to effectively manage manual flight when automated systems are disconnected. ✈️ Purpose of Sierra Patterns
: In Normal Law, the A320 automatically trims for pitch. When a pilot moves the side-stick, they are commanding a load factor demand, not a direct surface deflection. Once the stick is released, the aircraft maintains the flight path vector. In a rapid Sierra configuration sequence (dropping gear, extending heavy flaps), pilots must resist the urge to over-control or "fight" the side-stick. The key is making small, deliberate inputs and allowing the FBW system to stabilize. sierra pattern a320
The A320 was designed as a "fly-by-wire" machine with layers of envelope protection. The Sierra pattern exploits this automation to reduce pilot workload during a high-stress event. Consider a low-visibility CAT III approach at London Heathrow (EGLL) or Frankfurt (EDDF). If a go-around is called at 50 feet, the pilot’s visual reference may be zero.
This guide applies to FMS standard 1A/2A (Thales) and 1A/2A (Honeywell) found on A320ceo (2000-2010s) and A320neo (2016+). On very old FMS (pre-1995), Sierra patterns were not computed automatically—pilots had to fly them manually using selected altitude. Auto brakes must remain OFF during a touch-and-go
Operational Analysis and Safety Review: The "Sierra" Pattern (A320) Date: October 26, 2023 Prepared For: Flight Operations / Training Department Subject: Approach Strategies, Energy Management, and Descent Profile Analysis
In certain airports, procedures may be labeled with the suffix "S" (Sierra). For example, a "DEPARTURE 1S" or "ARRIVAL 1S." When a pilot moves the side-stick, they are
Gone are the days of only studying from a heavy, thousand-page manual. While the official Flight Crew Operating Manual (FCOM) remains the ultimate source, today's pilots have a wealth of modern tools to build their mental patterns.
When a pilot decides to abort a landing (Go-Around), they press the (Take-Off/Go-Around) switch on the thrust levers. This triggers a pre-programmed sequence: The aircraft automatically changes from Approach Law to Normal Law, the thrust levers advance to the Go-Around detent, and the Flight Director (FD) displays a specific pitch attitude target (usually 15 degrees nose up).
Do attempt to fly a continuous idle descent. You must actively manage the level segment.