An "EHYD PX LO" light signals what condition?

The "EHYD PX LO" light indicates that the emergency accumulator pressure is below a specific threshold. This warning is crucial because the emergency accumulator is a vital component in hydraulic systems, especially in aircraft, as it provides hydraulic pressure when the primary system fails or if there is a loss of pressure. Maintaining adequate pressure in the emergency accumulator is essential to ensure that critical systems remain operational in case of an emergency. When this light is illuminated, it alerts the crew to check the hydraulic system's pressure and take necessary actions to manage the situation effectively, safeguarding the aircraft's operational integrity.

Understanding that this warning pertains to accumulator pressure is important for immediate troubleshooting and maintaining safety protocols, distinguishing it from alerts related to fluid levels, overheating, or engine performance.