Originally Posted by
Hodd
Is there any sort of guidance as to the maximum time the nose gear can be airborne after the main landing gear has touched down?
simply:
No.
The way you land an A320 and 330 340 350 380 is different.
complicated:
A320 Touchdown you select Reverse immediately. The Nose drops and you need to slow it down by pulling the six firm 1-2 times so the Nosewheel doesn't drop to hard.
A330 touchdown of course you select the reverse immediately but you need to get the whole boogie down. you keep the nose up a little longer so that all main wheels touch the ground, and then you need to fly the nose to the ground a bit.
And it all depends a little from the auto brake, there are different softwares, old and new ones. you can fly with two AC of the same MSN number . both 5XXX for example and both may brake differently. Old ones sometimes first trigger the Automarke when Nosewheel touches down, others simply the preselected seconds after main wheel touchdown.
But you should never try to keep the nose in the air! some dudes try to airbrake the 320 keeping the nose up, this is totally wrong. but when VMU is reached the Nose will just drop very hard ...