Question

ELECTRIC PANEL: What does a FAULT light (accompanied with an ECAM caution message) indicate on the AC ESS FEED pushbutton?

A) A fault in the air conditioning system
B) A fault in the essential AC power supply
C) A fault in the engine anti-ice system
D) A fault in the emergency lighting system

Answer 1

The FAULT light on the AC ESS FEED pushbutton indicates a fault in the essential AC power supply, which is vital for aircraft operation.

Step-by-step explanation:

The FAULT light on the AC ESS FEED pushbutton accompanied with an ECAM caution message indicates B) A fault in the essential AC power supply. This is part of an airplane's electrical system that deals with the power distribution to essential systems. When the FAULT light illuminates, it suggest there is an abnormal condition or issue within the essential feed of the alternating current (AC) supply.

The essential AC power supply is critical as it supplies power to vital systems that are necessary for the safe operation of the aircraft. Pilots or maintenance personnel need to address this issue immediately to ensure the systems that rely on this essential feed are not compromised.