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10 Cards in this Set
- Front
- Back
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Refr Ovrht Light |
PC: temperature in cooling duct exceeds safe limits. On ground: inoperative heat exchanger blower fans. Action: In flight, dump EDC. After light is out, operation is permitted in the manual mode at the two dot position or warmer. On deck, turn off ground air conditioning switch; investigate by checking the heat exchanger cbs on Bus B and blower ctrl cb on MEDC. If cbs are set and the light is out, operation is permitted in the manual mode two dot or warmer. |
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L/R Wing Hot light |
PC: air temperature in the wing plenum area exceeds safe limits. May be caused by a leak in the bleed air manifold or EDC plumbing. Action: a. Secure wing de-icing and get out of icing area. b. If lights remain on dump appropriate EDCS. |
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Leak test accept light |
Action: maintenance function. Refer to appropriate maintenance manuals. |
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Fus Duct Hot light |
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Engine bleed air open |
PC: when the valve begins to open, the light will be on. When the valve is closed, the light should be off. |
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Cabin press light |
PC: Light on at cabin altitude 10,000 ft +or- 500. Cabin press light out by 8,000 ft on descent. Action: refer to pressurization loss. |
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Start Valve |
a. During start sequence (normal). b. After start sequence or during engine operation (abnormal). PC: indicates one of the four engine start control valves is open. Action: check overhead panel for individual engine start control valve open light. |
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Starter control valve open |
PC: engine starter control valve is open. (Valve should close and light go out when starter button is pulled out at 57 to 64% RPM during normal start). Action: *if light remains on or comes on after start, secure engine by pulling emergency shutdown handle. |
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L/R Fus bleed air SOV light |
PC: when the valve begins to open, the light is on. When the valve is closed, the light should be off. |
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Master Press System |
PC: oil pressure low or oil temperature high on left or right EDC. Cabin exhaust fan inoperative. Refrigeration duct overheat warning. Action: locate fault on overhead panel. Secure faulty system. Reset for continued warning protection. |
