Hi Guys,
When I was looking at the Pack system of B747 Freighter, I found something I couldn't understand exactly.
You may find Dump Valves(SMACCS) in Pack's(No.1 and No.3)
The question is Why Freighter needs Dump valve.
Manual just said Dump valve restrict airflow to Pack's But I just thought FCSOV has this function(Shut off) and I found this valve is related to fire protection system for main deck cargo.
I know that fire in main deck cargo can be removed with depressurizing it.
can anyone explain that to me?
