Ducktpressure?
Remember that the demandpumps 1 and 4 are running on bleed, so if you turn them off helps a lot. its like closing a big hole in the duckt...
etc. Starting engine 3 and switching Dem. Pum 1 off and R ISLN makes your ductpressure rise from 9 to 25
its not an official procedure but might make your day....
Why are you running both demand pumps? Surely you should be running the #4 system on the electric AUX pump (or #1 and #4 AUX if you have two AUX pumps fitted).
Didn't realise these aircraft had such leaky ducts.
"Queen"... popularized by the Microsoft Flight Simulator community
