Final answer:
The indication of an APU OIL PRESSURE LOW condition will appear on the aircraft's Engine Indicating and Crew Alerting System (EICAS) or a dedicated APU control panel, depending on the aircraft.
Step-by-step explanation:
An APU OIL PRESSURE LOW condition will typically be indicated on the aircraft's Engine Indicating and Crew Alerting System (EICAS) or a dedicated APU control panel, depending on the type of aircraft. Modern aircraft are equipped with sophisticated monitoring systems that alert the crew to a range of operational issues, including low oil pressure in the Auxiliary Power Unit (APU). The APU is a critical component that provides energy for various systems when the main engines are not running, particularly during pre-flight and post-flight operations. When the system detects low oil pressure, it will display an alert or warning on the EICAS, which is an integrated system that consolidates engine performance and aircraft system surveillance onto a singular display interface for the cockpit crew. Alternatively, some aircraft might have a separate APU control panel that displays the status and alerts for the APU directly.