Which of the following is a required condition for the MFD before engine start?

The requirement for the multifunction display (MFD) to be operational before engine start is critical for safe and effective aircraft operation. An operational MFD ensures that all necessary flight information and data are available to the pilot, including navigation, engine parameters, and systems status. This is vital for pre-flight checks, where the crew assesses engine and system readiness, ensuring everything is functioning correctly before initiating the start sequence.

If the MFD were not operational, it would hinder the pilot’s ability to monitor important systems, potentially leading to undetected issues that could compromise safety during start-up and subsequent flight operations. Thus, having the MFD operational is a fundamental requirement that supports overall flight safety and facilitates a thorough pre-start inspection of aircraft systems.