Hyd 2 Off

[trisager 2]

The MD-11 is a wonderful aircraft with so much automation that it very quickly becomes utterly boring to fly. So I've enabled failures, and on this particular flight I got hit by a complete loss of hydraulic fluid in system 2. That caused some excitement since apparently AP1 depends on this system in some way and so disconnected.Anyway, one of the consequences displayed on the SD CONSEQ page is "FLAPS MAY NOT EXTN > MAX LDG WT". It makes sense that the ability to extend flaps is reduced with the loss of a hydraulic system, but what is the connection to landing weight? If someone could explain this message I would be grateful.TomFYI, the complete list of consequences was:AUTOPILOT 1 NOT AVAILABLEFLAPS MAY NOT EXTN > MAX LDG WTMAX 35 FLAPS FOR LANDINGHYD SYS MAY BE USED FOR APPR & LDG

[tcas_climb 45]

It is speed related. If above MLW, the Hydraulics may not be able to push the flaps down to landing setting if flying at the Vref speed at that weight

[trisager 2]

Ah, that makes sense. Thanks :)Tom

[mburkhard 23]

Tom,way to go! :) I'm happy to see people starting to use failures! That's what the professional simulators are there for anyway :)Regards,Markus