True or False: If the emergency accumulator is discharged, the EHYD PX LO annunciator will remain illuminated until the system pressurizes.

The assertion is true because the EHYD PX LO (Emergency Hydraulic Pressure Low) annunciator is designed to alert the pilot when the hydraulic system pressure falls below a certain threshold, which can happen if the emergency accumulator is discharged. When the accumulator is discharged, it cannot provide additional pressurization to the system, leading to a low hydraulic pressure condition. Until the hydraulic system is successfully pressured again, whether through regular operation or emergency procedures, the EHYD PX LO annunciator will remain illuminated to indicate to the pilot that there is a critical issue that requires attention. The ongoing alert serves to remind the pilot of the importance of addressing the hydraulic system's condition before it potentially affects aircraft control or performance.