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10 Cards in this Set
- Front
- Back
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Where is the E/E compartment? |
Behind the nose gear, underside of aircraft. |
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When the OAT is above 45°F, is the skin heat exchanger operating? Why? |
No, Boeing says the weather is too warm for the heat exchanger to work and opened the exhaust overboard valve. |
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Does the cooling configuration change after 2 engines are started? |
Yes, the inboard supply valve closes
AND...
When warmer than 45°F the exhaust valve closes and skin heat exchanger valve opens. |
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On the ground, when is the inboard supply valve open? |
Anytime before 2 engines are started. |
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When will the NO COOLING light come on? |
When E/E cooling is in a non-normal config with OVRD selected and reverse flow cooling is NOT working. (After 1min inhibit) |
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What does STBY selection accomplish? |
Forces valves to correct configuration electrically for flight and both fans running. |
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What does OVRD accomplish? |
Forces reverse flow config. Opens Smoke and Manifold interconnect, and closes Inboard Supply, Overboard Exhaust, Skin Heat Exchanger Valves, and depowers Supply and Exhaust fans. |
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When switched to OVRD, how long will the NO COOLING light be inhibited? |
1 min |
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When will the skin heat exchanger valve be open? |
-On the ground and OAT is less than 45°F -Anytime 2 engine running. (In flight logic) |
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Does the OVRD selection open the manifold interconnect valve? |
Yes. |
