A320 family - hyd. System pressurization on ground
Hello
There’s something in the FCOM that bothered me without being able to find a direct answer .
In the very first pages of the FCOM / SOP , there is a : “WARNING : Do not pressurize the green hydraulic system without clearance from ground personnel, if any gear door is open.”
So far so good , this makes sense . But on the succeeding SOP chapter there are a few instances of other warnings saying : “WARNING Do not pressurize hydraulic systems without clearance from ground crew.”
Notice that now it speaks in general about the hydraulic systems ( not just about the green if gear doors are open ) .
Since in the preliminary cockpit preparation you have verified that aircraft systems using hydraulic pressure are at some fixed position , what consideration would you then have if needing to pressurize a hydraulic system ?