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18 Cards in this Set
- Front
- Back
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Describe ground pneumatic air.
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Unconditioned, supplied to right side of pneumatic manifold from right side of airplane, no cockpit controls.
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Dual bleed condition:
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APU bleed valve is open, #1 engine bleed is on. Same w/ #2 and isol valve open.
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Describe the APU bleed valve.
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Electrically controlled, pneumatically actuated.
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What does AUTO position of the ISOLATION VALVE switch do?
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Opens and closes with reference to the position of the pack and engine BLEED switches.
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When do the WING-BODY OVERHEAT lights illuminate?
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-test
-overheat in the area surrounding the pneumatic ducting |
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What things can the TRIP RESET Button reset if the cause no longer exists?
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-Engine Bleed Trip
-Pack Trip -Duct Overheat |
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What extra things does the WING BODY OVERHEAT left light look at?
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Keel Beam and APU bleed duct.
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What 4 things does the Air Condition system do?
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-pax crew comfort
-heat cargo compartments -cool electronic equipment -air for pressurization |
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One pack can pressurize to what at what altitude? Can it keep us warm and cool too?
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8000' up to 37,000. Yep, all altitudes.
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When is NORMAL pack flow available?
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One pack is in AUTO and on the ground, or in air with flaps down.
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When do packs go to high flow?
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-switch HIGH
-one pack AUTO, in flight, flaps up -one pack AUTO, APU bleeding w/ both engine bleed switches off |
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When is APU in high flow?
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-one pack in HIGH
-APU bleed valve open -On the ground |
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Describe air mix valve operation.
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After hot and cold air are mixed, the air mix manifold gets all the air from the right and 80% of the left. The remaining 20% goes right to the cockpit
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WHen does the ram inlet door move to the full open position?
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On the ground or in the air with the flaps extended.
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Where is the probe for the supply duct?
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Left cabin supply duct, monitors air from the air mix manifold.
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When is recirc fan operating if its switch is in AUTO? (3 bags of air)
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-Fan is on during normal operating configuration
-Off if both packs are on and one or both is in HIGH. |
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Equiment cooling system consists of what?
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Two supply fans, two exhaust fans, exhaust valve and port, and no airflow sensors or lights.
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PACK TRIP OFF lights indicate?
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-Excessive pack temp or supply duct temp.
-pack valve closes and airmix valve drives full cold |
