Day 3-4 Progress Check Flashcards
Which system in the Boeing 777 provides alternate brake operation during an emergency?
The center hydraulic system
What is the role of the pressure transducer in the Boeing 777 hydraulic system?
It measures and transmits hydraulic pressure data to the flight deck
How does the Boeing 777 prevent over-pressurization of hydraulic systems?
Through pressure relief valves that automatically activate
What is the primary purpose of the Ram Air Turbine (RAT) in the Boeing 777?
To provide hydraulic power during emergencies
What is the function of the nose gear isolation valve in the Boeing 777?
To allow nose gear steering at low speeds
What powers the hydraulic systems during an engine failure in the Boeing 777?
The ram air turbine (RAT)
What does the CHIS (Center Hydraulic Isolation System) do in the Boeing 777?
It isolates parts of the center hydraulic system during fluid loss to maintain critical systems
What triggers the Power Transfer Unit (PTU) in the Boeing 737 hydraulic system?
A system B failure and flaps between 0-15 degrees
Which hydraulic system in the Boeing 777 powers the center thrust reverser and landing gear?
Center hydraulic system
How are the hydraulic pumps in the Boeing 737 system cooled?
By heat exchangers located in the main fuel tanks
How does the landing gear transfer unit in the Boeing 737 function during failure?
It transfers hydraulic pressure from system B to raise the landing gear when system A fails
What happens when a hydraulic filter in the Boeing 737 becomes clogged?
Fluid bypasses the filter, and an indicator alerts the crew
Which component ensures continuous fluid flow to the pumps in high-altitude operations?
Pressurized reservoirs
What is the purpose of the differential pressure indicator in hydraulic filter modules?
It indicates when filters need to be replaced
What is the function of the standby hydraulic system in the Boeing 737?
It powers critical systems like thrust reversers and rudder in case of A or B system loss
