Ginger wrote:
No. As Dptdexys says, units in reserve must be allocated to a means of entering the table, and once that is done it may not be changed. So units in a spacecraft or aircraft may not be changed to use the webway or teleport.
Should a unit leave the table by some means, it may only re-enter by the same means; when in an aircraft you have to return in the same aircraft, and if using portals or the webway, units cannot return in an aircraft etc.
I can certainly understand why you wouldn't be able to get out of an aircraft, but it's a shame on webways and and teleporting to a degree given Necron Flayed ones can do it, and it would give a bit more flexibility to the i think 3 other units in the game that have teleport in armies with some manner of portals.
Just for reference from the Necron army list:
Any formations in the army other than the Æonic Orb or the Abattoir may begin the game in reserve. Formations in reserve may enter play using their teleport
ability, or via a portal using an action that allows movement.
Granted necron portals are more flexible than webways anyway given you can go back into reserves through them as well.