General Authority of Civil Aviation (GACA) Aeronautical Information Publication (AIP) Practice Exam

Disable ads (and more) with a membership for a one time $4.99 payment

Study for the General Authority of Civil Aviation (GACA) Aeronautical Information Publication (AIP) Exam. Utilize our expertly crafted quizzes with flashcards and multiple choice questions, complete with hints and explanations. Prepare efficiently and excel in your exam!

Practice this question and more.

What is the function of the SAARU in relation to the ADIRU?

Provides position data
Acts as a primary source for SPD, ALT, ATT
Serves as a secondary source for SPD, ALT, ATT
Provides fuel data

The correct answer is: Serves as a secondary source for SPD, ALT, ATT

The function of the SAARU, or the Secondary Autonomous Attitude Reference Unit, in relation to the ADIRU (Air Data Inertial Reference Unit) is to serve as a secondary source for speed (SPD), altitude (ALT), and attitude (ATT) data. In an aircraft, the ADIRU is responsible for primary measurements and provides critical flight data, including airspeed, altitude, and aircraft orientation. The SAARU serves as a backup in case of failures or inaccuracies in the ADIRU's data, ensuring that the flight crew still has access to crucial flight parameters necessary for safe operations. This secondary role is essential for enhancing safety, as it allows for redundancy in flight data collection. Should there be a malfunction in the primary system, having a secondary source means that the crew can still maintain situational awareness and respond effectively to any anomalies or emergencies.