The antiskid failure (which as you point out could be for a varity of reasons) and subsequent inability to arm autobrake was oft seen in the sim.
As for anything else sadly I don't have access to 744 manuals at the moment - For those not familiar with the machine the gear lever has three positions and normally was placed to "Off" after takeoff once the gear has retracted and the gear doors were closed. The only situation I recall where you would fly around with Gear selected to "Up" was for a Gear Door (or similar) warning after takeoff, where you'd be trying to force and then hold the recalcitrant doors closed by the hydraulic systems, but I don't remember any comments in that NNC about then being unable to arm autobrake prior to selecting Gear down, but as I said it has been a while.....
Last edited by wiggy; 12th May 2017 at 12:17.