Which Emergency Procedure is associated with hydraulic warnings such as PRI/SEC HYD PRESSURE indications on the EICAS page or PRI SERVO P / SEC SERVO P warnings?

• A. ICU Failure
• B. LPCAP Failure
• C. Hydraulic Indicating System Failure
• D. SFI Failure

Answer: (C)

Hydraulic warnings that show PRI/SEC HYD PRESSURE on EICAS or PRI SERVO P / SEC SERVO P warnings point to a fault in the hydraulic indicating system itself, not necessarily a loss of hydraulic pressure. The indicating system provides readings for both the primary and secondary hydraulic circuits and their servo pressures; when that system fails, the indicators can generate those specific warnings. The Emergency Procedure tied to this situation is Hydraulic Indicating System Failure, which guides you to treat the readings as unreliable, verify actual system status by alternate means, protect critical hydraulic loads, and prepare for reduced or more cautious control as required. Other failures listed would involve different subsystems and would produce different cues, so they don’t match these particular warnings.