The Electrical Override bypasses which module to command gear extension?

• A. Proximity Sensor Electronics Module (PSEM)
• B. Hydraulic Control Unit
• C. Gear Door Controller
• D. Landing Gear Limit Switch

Answer: (A)

Electrical Override bypasses the Proximity Sensor Electronics Module to command gear extension. The Proximity Sensor Electronics Module is the part of the system that processes signals from the gear proximity switches and feeds the gear control logic with position information. When you use the Electrical Override, that sensor-processing path is skipped, and the extension command is sent directly toward the hydraulic actuation path so the gear can extend. The Hydraulic Control Unit is the hydraulic power path that actually moves the gear, and the other components—Gear Door Controller and Landing Gear Limit Switch—deal with door sequencing and end-of-stroke sensing, not the direct electrical command path for extending the gear.