Discover ISIS (Integrated Standby Instrument System), the ultimate backup for critical flight information.

An Integrated Standby Instrument System (ISIS) is a crucial component of an aircraft’s instrument panel that provides pilots with essential flight information in case of primary flight instrument failure. It is intended to serve as a backup in case the standard glass cockpit instrumentation fails, ensuring the availability of critical flight data to pilots, and enabling them to maintain control and safely navigate the aircraft.

With a single multifunction display, the ISIS is designed to replace traditional analogue standby instruments, such as the altimeter, airspeed indicator, and attitude indicator. This advanced technology saves space and weight in the cockpit, enhances the pilot’s situational awareness, and provides accurate flight information, even during emergencies.

Various aspects of ISIS are defined by its function of being a backup to conventional instrumentation. Following this principle, it has been designed to operate with a high level of availability and reliability, as well as being as independent as possible from the aircraft's primary instrumentation and sensors alike.

The ISIS system displays the following information:

‐ Attitude

‐ Airspeed and Mach

‐ Altitude

‐ Barometric pressure

‐ LS function

‐ Bugs

System Information :

The ISIS consists of two main units: the Electronic Standby Instrument (ESI) and the Control Panel Unit (CPU). The ESI is a standalone display that provides pilots with primary flight, navigation, and engine data. It is designed to be easily readable even in low light conditions, ensuring that pilots have access to critical information at all times.

The CPU, on the other hand, acts as the interface between the aircraft’s avionics system and the ESI. It receives data from various sensors and systems and processes it to provide accurate and real-time information to the ESI. The CPU also includes buttons and knobs that allow pilots to control and configure the ISIS system.

The ISIS is installed in the cockpit, usually on the centre instrument panel. It is positioned within easy reach of both pilots, ensuring quick and convenient access to critical flight information. The system is designed to be highly reliable and capable of operating autonomously for extended periods, even during electrical power interruptions.

During normal flight operations, the ISIS remains in standby mode, displaying basic flight parameters such as attitude, airspeed, altitude, and vertical speed. It continuously monitors the status of the primary flight instruments and avionics systems, ready to take over in case of a failure or loss of data.

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