Hydraulics and Landing Gear Reference
Pump, reservoir, accumulator, actuator, gear-lock and brake system fundamentals.
Source: AMT-SIM original study manual
Hydraulic Power Loop — Pump to Actuator
An incompressible fluid transmits force through the loop. The pump makes pressure, the reservoir supplies it, the accumulator smooths demand, the selector valve meters it and the actuator converts it to movement. Contamination control is what keeps the loop alive.
Live readings
- System A pressure
- 3000 psi
- System A actuator
- 3000 psi
- Minimum to move
- 1000 psi
Inject a fault
Operate any outlined unit. A tripped breaker or an open valve is deliberate isolation, not a defect — only the injected faults are defects.
Reference notes
A hydraulic system uses a pump to create pressure, fluid to transmit force, valves to control flow, accumulators to store energy and actuators to produce movement. Filters, seals, correct fluid and contamination control are essential.
Landing gear maintenance includes struts, torque links, uplocks, downlocks, actuators, doors, proximity sensors, wheels, tires, brakes and emergency-extension provisions. Verify pressure, travel, locking and leakage against approved limits.
Never mix incompatible hydraulic fluids. Isolate pressure, use the specified servicing equipment and account for stored energy before disconnecting a line.
Books, manuals and source material
Aviation Maintenance Technician Handbook - Airframe (FAA-H-8083-31B)
Federal Aviation Administration · FAA-H-8083-31B, Airframe
Official FAA handbook covering structures, systems, hydraulics, landing gear, electrical, fuel, fire protection, instruments and avionics.
Open source resourceAcceptable Methods, Techniques, and Practices - Aircraft Inspection and Repair
Federal Aviation Administration · FAA Advisory Circular AC 43.13-1B, with changes
FAA-accepted practices for inspection, repair, structures, hardware, electrical work and systems when applicable.
Open source resourceA&P Technician Airframe Textbook Reference
Jeppesen · A&P Technician Airframe - use the learner's licensed edition and assigned chapter/pages
Course textbook reference for airframe structures and systems. AMT-SIM stores citations and study links, not unauthorized textbook reproductions.
Reference this title in the licensed or school-provided copy.
Related Learning
Related Simulator Faults
These faults can be practised in the Hangar after selecting a compatible aircraft.
This reference is an AMT-SIM study aid. Use current approved data and instructor guidance for real maintenance.