What does the MFD need to be prior to engine start?

For the proper operation of the King Air 350, the Multi-Function Display (MFD) must be operational prior to engine start. This is critical because the MFD provides essential data and system monitoring capabilities that are vital for a safe and efficient engine start procedure. An operational MFD allows the flight crew to monitor engine parameters, check system statuses, and ensure that all necessary pre-start checks can be completed.

While having the MFD turned on is a part of this process, simply turning it on does not guarantee that it is functional and displaying the required information. Calibration and resetting the MFD are not typical pre-start requirements, as these actions are generally performed during maintenance or troubleshooting rather than as part of routine pre-flight checks. Therefore, ensuring the MFD is fully operational encapsulates the need for it to be ready to function actively during the pre-start phase.