3.2 The importance of the hydraulic system

 

    The hydraulic system is just high pressure fluid ran through many pumps and lines essentially but this system powers many of the aircrafts major components. It generates the power for the landing gears to move up and down, and many of the flight controls are powered by the hydraulic system. The system has a gage reading in the cockpit showing the pressure level so you can know if the system is failing or not, but what would happen if there was a failure? You could lose your ability to control your flight controls, or you could lose the ability to use your breaks. That’s exactly what happened in April 2018 to an airbus A320 leaving Melbourne, after takeoff they noticed low hydraulic pressure and called it in. They were advised to return to Malborne, and to land without breaks and nose steering. The made the landing safely and were towed to the terminal. The loss of hydraulic pressure was cause by a break in the line from rubbing of a bolt next to the line causing fretting on the line ultimately leading to its break. 

    Due to this incident they ordered inspections on all hydraulic lines on similar aircraft within their fleet. This could have been avoided by being more aware during their inspections and obviously its poor design too.  we as mechanics do countless inspections on each aircraft before they fly. Multiple people look over and sign off saying everything is safe for flight meaning if someone was just a little more thorough in their inspections that day then this incident wouldn’t have happened.

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