Originally Posted by
AerocatS2A
Beware the effect on the hydraulics if the APU should fail on the ground however (not at all uncommon in hot weather.)
Your Standby Gen. driven off the Green system will retain some AC power, and will suck all your Green Hyd system services.
You always have yellow and if your brakes are selected to be running on Yellow (as they should be!), ya should always have braking. Don't need no fancy electrical at all on the 146 for Yellow system braking.
You will loose your nosewheel steering though! (eeek...Green)
Ya those bloody APUs. Only time we taxi 2-engine on the Smurf-Jet was just quick maintenance runs.