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Fc744 Hydraulics
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Fc744 Hydraulics

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  • Transcript

    • 1. B747-400 Flight Crew Conversion HYDRAULICS www.theorycentre.com
    • 2. HYDRAULIC CONTROL PANEL ENGINE HYDRAULIC PUMP CONTROL SWITCHES ON – Engine driven pump (EDP) will pressurize system with engine rotating PRESS – Low pressure from engine driven pump
    • 3. HYDRAULIC CONTROL PANEL
      • DEMAND HYDRAULIC PUMP CONTROL SWITCHES
      • AUTO – Pump will operate for the following reasons:
      • Low EDP pressure
      • Engine fuel control switch in cutoff position
      • Systems #1 and #4 demand pumps will operate when flaps are in transit
      • ON – Demand pump will operate continuously
      • PRESS – Demand pump OFF/AUX or commanded to operate and has low pressure
    • 4. HYDRAULIC CONTROL PANEL AUXILIARY HYDRAULIC PUMP CONTROL SWITCH AUX – Selects Auxiliary pump to operate NOTE: Electrical power is from Ground Handling Bus (GHB) Pump will stop operating if EDP is producing pressure
    • 5. HYDRAULIC CONTROL PANEL SYS FAULT LIGHT Light will illuminate for 3 reasons: Low hydraulic quantity - >HYD QTY LOW Hydraulic fluid overheat - HYD OVHT SYS Low system pressure - HYD PRESS SYS NOTE: HYD PRESS SYS is a caution level EICAS message
    • 6. HYDRAULIC SYSTEM 1,2, & 3 1,2, 3 T RETURN P P P Q
    • 7. HYDRAULIC SYSTEM 4 T RETURN P P P Q
    • 8. HYDRAULIC SYSTEM 4 RETURN GROUND HANDLING BUS ON GROUND ONLY P P P
    • 9. HYD QTY APU: HYD PR HYD TEMP EGT OXY PR : CREW MAIN BATT V - DC APU BATT V - DC A - DC A - DC PASS 1 2 3 4 1.00 0.25 LO 0.55 RF 1.00 3250 3250 3250 3250 50 50 50 108 750 100.1 85.5 0.35 RF N1 N2 OIL QTY 1750 1650 28 15 27 38 CHG DIS RUD AIL SPL ELEV AIL SPL Hydraulic System Data Quantity Pressure Temperature RF < 0.75 to 0.35 (inhibited in flight) LO < 0.34 HYDRAULIC SYSTEM INDICATIONS ELEC FUEL ECS HYD DRS GEAR ENG STAT CANC RCL
    • 10. HYDRAULIC SYSTEM SYNOPTIC
    • 11. HYDRAULIC SYSTEM P&W ENGINE THRUST REVERSERS
    • 12. THE END