V speed in a Seneca:
Vr = 77kts Vx = 76kts Vy = 89kts Vyse = 89kts Vmca = 68kts Vne = 195kts Vno = 163kts Va = 121kts
Alternate air is an alternate source of air, it can for example be used during ice, when the normal filter is blocked to have a backup source available.
Alternate air is unfiltered air and should not be used during ground operation because the unfiltered air may contain dust and other contamination.
Seneca uses MOGAS (red) or AVGAS (Blue)
If you pitch up in a Seneca the speed IAS will decrease, because of the constand speed drive (in the propeller hub).
The propellers want to maintain the original RPM. Therefore the blades will go to a more fine blade setting.
Only hydraulic gear.
Live side to oppose the yawing moment.
Yes, feathering locks engage at 800 RPM on the Seneca.
We feather to stop windmilling and reduce drag.
No, you mechanically change a valve that changes the air intake to air that runs past the exhaust manifold and is therefore heated.
No, it’s not required as the Seneca has a fuel injection system and engine icing normally forms around the venturi of the carb.
Ice can still form in in a fuel injection system in icing conditions, an alternate air source is available in this situation which takes warm air from inside the engine cowling.