Final answer:
A steady FAULT light on the IR unit of the ADIRS PANEL indicates a malfunction in the Inertial Reference System, which needs immediate attention by maintenance personnel for the safe operation of the aircraft.
Step-by-step explanation:
When referencing the ADIRS PANEL on an aircraft, a steady FAULT light on the IR indicates a malfunction in the Inertial Reference system. The IR (Inertial Reference) unit is part of the ADIRS (Air Data Inertial Reference System), which provides critical flight data such as attitude, airspeed, and navigational information. If the IR unit has a steady FAULT light, it suggests that the system has detected an internal inconsistency or a failure that could affect the accuracy of the data it provides. Maintenance personnel should address this issue immediately to ensure the safe operation of the aircraft.
A steady FAULT light on the Inertial Reference (IR) light on the ADIRS panel indicates a problem with the IR system. This could mean that one or more of the Inertial Measurement Units (IMUs) are not functioning correctly. The IMUs are responsible for providing accurate navigation data to the aircraft's systems, and a fault light indicates that there may be an issue with this data.