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APU - Start & Shutdown

🔧 Master the APU start procedure and shutdown sequence used by airline pilots worldwide. This essential overhead panel training breaks down every step of APU operations. In this comprehensive tutorial, you'll learn exactly how the Auxiliary Power Unit functions from the flight deck, including the critical role of the APU master switch and start switch in bringing the APU online safely and efficiently. *What You'll Learn in This Video:* ✈️ *APU Start Procedure Step-by-Step* How the master switch initiates the power-up sequence before engine start What happens when the ECB performs its self-test The automatic opening of the air inlet flap and fuel isolation valve How the dedicated APU fuel pump supplies pressure to the system ✈️ *Understanding the Start Sequence* The role of the electrical starter motor in APU ignition Why 60% N speed marks the critical "end speed" milestone How the APU accelerates to its normal 99-100% operating speed What the blue and green indicator lights tell you at each stage ✈️ *APU Bleed Air and Electrical Power Supply* How the APU generator integrates with aircraft electrical logic Proper use of the APU bleed push button on the air conditioning panel Critical warning: Why you should never use APU bleed with ground pneumatic connections ✈️ *APU Shutdown Procedure* The simple one-button shutdown process Understanding the 60-120 second automatic cooldown period Why the inlet flap closing is delayed until 7% speed This video is produced by MindSpaceX Aviation, delivering professional-grade flight training content for aspiring and current aviation professionals. 📚 Full aviation training courses can be found at www.MindSpaceX.com/Aviation Whether you're preparing for type rating exams, studying aircraft systems, or building your technical knowledge, understanding overhead panel APU controls is fundamental to safe flight operations. Video Timestamps: 00:00 - Introduction to APU Operations 00:16 - APU Master Switch: What It Actually Does 00:48 - The Self-Test Sequence Explained 01:05 - APU Fuel System Integration 01:36 - Operating the APU Start Switch 02:01 - Electrical Starter Motor & Ignition Sequence 02:46 - Understanding N Speed & Self-Sustaining Operation 03:21 - Green AVAIL Light: APU Ready for Service 03:52 - APU Bleed Air & Electrical Power Supply Logic 04:21 - Critical Warning: APU Bleed Safety 04:36 - APU Shutdown Procedure Made Simple 05:01 - Automatic Cooldown Period Explained This channel shares professional aviation knowledge from the MindSpaceX Aviation e-learning platform. MindSpaceX Aviation is the aviation branch of MindSpaceX which delivers learning content to professional pilots around the world. MindSpaceX Aviation focus on EASA compliant ATPL theory as well as type specific theory for common type ratings. We have made hundreds of videos available for free. Do you wish to take your training tot he next level then visit our eLearning platform you can access extensive question banks for exam preparation and high-res downloadable multimedia such as posters, guides etc. #APUStartProcedure #APUShutdownProcedure #OverheadPanelAPUControls #APUMasterSwitch #APUStartSwitch #APUBleedAir #APUElectricalPower #AircraftSystems #FlightTraining #PilotTraining #AviationEducation #TypeRating #CockpitProcedures #A320Systems #AirbusTraining #FlightDeckOperations #AviationStudent #ATPLStudy #PilotLife #LearnToFly #AircraftPowerSystems #AuxiliaryPowerUnit #MindSpaceXAviation #AviationKnowledge #FlightSchool