The Standby (secondary) Attitude Air Data Reference Unit (SAARU) is an essential component of the Boeing 737 aircraft system. It plays a crucial role in providing accurate and reliable information to pilots, assisting them in maintaining safe flight operations. The SAARU is responsible for measuring various parameters that affect the aircraft’s attitude, such as pitch, roll, and yaw, as well as airspeed and altitude.
How does the SAARU Work?
The SAARU operates by collecting data from various sensors located on the aircraft. These sensors include accelerometers, pitot-static probes, and gyroscopes. The accelerometers measure the acceleration forces acting on the aircraft, allowing the SAARU to determine the aircraft’s pitch and roll. The pitot-static probes, on the other hand, measure the aircraft’s airspeed and altitude. Lastly, the gyroscopes provide information about the aircraft’s yaw or heading.
All of these data are processed by the SAARU’s internal computer, which calculates the aircraft’s attitude and other important parameters. The SAARU then displays this information on the standby attitude indicator, enabling pilots to quickly and easily interpret their aircraft’s position in relation to the horizon and other reference points. This is particularly useful in situations where the primary attitude indicator or other flight instruments may not be functioning correctly.
Importance of the SAARU
The SAARU is designed as a secondary system to provide backup information in case the primary attitude indicator or other flight instruments fail. It acts as a reliable backup system that assists pilots in maintaining control of the aircraft during abnormal situations. This redundancy is essential for flight safety, as it ensures that pilots always have access to critical flight information.
In addition to its role as a backup system, the SAARU also plays a crucial role in the aircraft’s maintenance and testing procedures. By providing accurate data about the aircraft’s attitude and other parameters, the SAARU allows maintenance technicians to diagnose and troubleshoot any issues more effectively. It also aids in the calibration and testing of other flight instruments, ensuring that they are functioning correctly.
Conclusion
The Standby (secondary) Attitude Air Data Reference Unit (SAARU) is a vital component of the Boeing 737 aircraft system. It provides backup information to pilots in case of primary instrument failure, allowing them to maintain control and ensure flight safety. By collecting data from various sensors, the SAARU calculates the aircraft’s attitude and other important parameters, displaying them on the standby attitude indicator. Furthermore, the SAARU aids in aircraft maintenance and testing procedures, facilitating effective troubleshooting and calibration. Overall, the SAARU is an essential system that enhances the reliability and safety of the Boeing 737 aircraft.
For More: What is EEC on Boeing 737? (Electronic Engine Control)