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Old 19th Jun 2019, 13:17
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NoTraps
 
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This is because ENG 1+2 Fire bottle 1 squibs A+B are supplied by the 28VDC HOT BUS (direct from batteries)

And ENG 1+2 Fire bottle 2 squibs A+B are supplied by the 28VDC BUS 2 (from TR2)
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