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24 Cards in this Set
- Front
- Back
Hydraulic System
SELECT ------------ MANUAL |
Both lights = system switched to manual mode. Press to lock in MANUAL.
MANUAL Lt = System operating in manual mode. |
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Hydraulic System 1,2 or 3 PRESS Light indicates what?
Consequence? |
< 2400 psi or > 3500 psi
Right pump turns ON |
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Electric Aux Pumps location
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both in right well well
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How do you start the Electric Aux Pumps?
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Aux Pump switch(es) on Overhead or Brake Control Panel, ADG Handle, HYD Test Switch
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When does the Electric Aux Pump go OFF automatically?
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First fuel switch ON during start
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Where do Electric Aux pumps get power?
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Normal Ground Service Bus and Emergency from ADG
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RMPs turn ON when?
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<2400 psi any system (Taxi, TO, Lndg)
<45% N2 any engine (Taxi, TO, Lndg) Fire handle pulled Auto Slat Extension (stick shaker) Second engine or hyd sys loss in cruise Hydraulic Test Manual reversion from Auto mode |
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RMPs OFF when (auto mode)
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Reservoir qty <1 gal on either side of RMP
ADG deployed (Elec switch OFF) Cruise with 2 systems operative Engine start in flight |
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Hydraulic pump switches
FAULT ----------- OFF (6 times) |
Fault = Low press (<2400 psi) or Hi temp (>245 deg)
OFF = Commanded OFF System or pump pressure low or hi Fluid quantity <2.5 gals System Temp Hi During Engine Start Fire Handle Pulled |
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RMP location
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Center Wheel Well
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What is an NRMP?
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Non-reversible Motor Pump (2-1, 3-2).
Alternate source of hydraulic power to the rudder and stab when system 1 or 2 is lost |
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What fluid does the NRMP use?
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Has its own fluid / lines
- Compensator - 1 gal capacity - <1 qt NRMP SOV closes and NRMP inop |
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When does the NRMP activate?
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When system 1 or 2 press drops below 2000 psi +/-200
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NRMP Powers what?
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Hyd System 1 loss - 2-1 NRMP powers Upper Rudder and Horizontal Stab
Hyd System 2 loss - 3-2 NRMP powers Lower Rudder |
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Hydraulic Reservoir(s) Location
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1 - Left Wheel Well
2 - Tail 3 - Right Wheel Well |
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Hydraulic Reservoir(s) Capacity
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12.0 Gallons
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Minimum Hydraulic Quantity for Dispatch
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System 3 - 6 gallons
System 1&2 - 4.75 gallons |
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HYD QTY LO (alert)
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<6.0 gallons - system 3 (engines OFF)
<4.75 gallons - sys 1&2 (engines OFF) 2.5 gallons - all systems, engines running |
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HYD SYS FAIL (alert)
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respective system quantity 1 gallon
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What is powered by Hydraulic System 1?
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[SAFER R NTSB]
Spoilers Ailerons Flaps Elevators Rudder (upper) Reverser (PW) Nosewheel Steering Trim Slats Brakes |
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What is powered by Hydraulic System 2?
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[SAFER R]
Spoilers Ailerons Flaps Elevators Rudder (lower) Reverser (PW) |
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What is powered by Hydraulic System 3?
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[SALE R NTSB]
Spoilers Ailerons Landing Gear Elevator Reverser (PW) Nose wheel steering Trim (stab) Slats Brakes |
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1 - What is the Enhancement Valve?
2 - When does it operate? 3 - What are the remaining flight controls? |
1 - Valve that closes to protect flight controls with hydraulic system 3 loss
2 - System 3 </= 4.75 gals (HYD 3 ELEV OFF) Valve at pressure bulkhead in System 3 closes 3 - Spoilers, Ailerons, Stab Trim |
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Autopilot use with hydraulic system loss
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Loose system 1 - use AP 1
Loose system 2 or 3 - use AP 2 |