Title: Understanding AUTO/BRK Modes for Airbus Pilots
As an Airbus professional pilot, understanding the intricacies of the AUTO/BRK system is paramount for safe and efficient landings. The AUTO/BRK system, detailed in the DSC-32-30-20 performance manual, offers two modes: MED (medium) and LO (low). Each mode is carefully designed to cater to specific landing scenarios, providing pilots with the necessary tools to control deceleration during touchdown and rollout.
During normal landing operations, MED or LO mode is typically selected based on runway length and environmental factors. Let's delve into the specifics of each mode:
- LO Mode (Low):
- In LO mode, the system initiates progressive pressure to the brakes approximately 2 seconds after the deployment of ground spoilers.
- The purpose of LO mode is to facilitate a controlled deceleration of the aircraft at a rate of 2 meters per second squared (6.6 feet per second squared).
- This mode is suitable for standard runway lengths and typical landing conditions where a moderate deceleration is sufficient for a safe rollout.
- MED Mode (Medium):
- Conversely, MED mode also triggers progressive brake pressure 2 seconds after the deployment of ground spoilers.
- However, in MED mode, the system applies a higher rate of deceleration, targeting 3 meters per second squared (9.8 feet per second squared).
- MED mode is particularly useful in situations where the runway length is limited, or environmental conditions necessitate a more rapid deceleration to ensure the aircraft stops within the available runway distance.
Selecting the appropriate mode requires careful consideration of various factors such as runway length, weather conditions, aircraft weight, and any operational constraints. Pilots must assess these factors during approach and landing, making informed decisions to ensure the safety and efficiency of the landing operation.
Moreover, it's crucial for pilots to adhere to standard operating procedures and manufacturer guidelines when utilizing the AUTO/BRK system. This includes understanding the limitations of each mode and applying them judiciously to achieve optimal landing performance.
In conclusion, the AUTO/BRK system in MED and LO modes plays a crucial role in the safe and effective deceleration of Airbus aircraft during landing. By understanding the nuances of each mode and applying them appropriately, pilots can enhance the overall safety and efficiency of landing operations, contributing to the seamless flow of air traffic worldwide.