PPRuNe Forums - View Single Post - Too much reliance on QRH?

15th Feb 2006, 10:21

#15 (permalink)

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Mmh, maybe you are talking about 2 different NNC. the "PACK" NNC (-400) asks for ISOLATION VALVE SWITCH CLOSE. The "PACK TRIP OFF" NNC (-300) does NOT ask for ISOLATION VALVE switch to be placed CLOSE.