You cannot remove Pilot Mode from your system. It's a feature like all the others and is there whether you use it or not.
There are:
1. A few different ways to disable Airplane Mode. Read back thru the answers here for ways to turn it off. There's a function key control, a Setting to turn it on or off, and another couple ways to access turning it off. You didn't me ntion anything
about your system, OS or anything to provide direct help, so you'll have to figure it out on your own.
You could also check Help for info on turning it on and off. Turn it OFF, and never touch it again.
2. There is a so far unadmitted bug in Windows that can cause it to turn ON and then refuse to turn OFF again. You tell Airplane Mode to turn OFF and it starts to, and then turns right back on all by itself. For whatever causes this problem, and it's not
known even after all these years, or at least MS won't admit it happens. The only reliable way to get rid of it is to back up 100% of your data to DVD or external drive, and then delete and recreate the partitions on your hard drive, let Windows reinsall,
and then reinstall all your programs and settings again. A simple Format will NOT accomplish getting rid of the problem; in 99% of the cases it also requires the deletion and recreation of the Boot Drive's partitions. You can look back thru these posts from
me for a more detailed description, almost step by step, on how to accomplish this, but I've lost track of where that message/s might have been posted.
Be aware also that Win 10, which I assume you have (it's also impacting 7 & 8) since you gave no information, there is a huge upgrade going on, the Anniversary Update, which is in process right now and goes through to the first part of November: It may
or may not have a fix for this problem. Somehow, code for this problem is being written to supposedly inacessible addresses on the boot drive but I've never been able to pin it down successfully for lack of disk editing/searching software.
We're (me, NOT MS) waiting to see if anyone reports this problem after the October Anniversary Update is over with but so far nothing has come to light. Also note that the last Anniversary Update piece that was sent out caused some computers to go into
a constant boot mode it never exits: The only way to fix that is to go into Safe Mode and use the KB uninstaller to kill that update or, wait for MS to send out the fix for it. It does NOT do that to all machines, and appears with varying symptoms too but
some computers are unaffected by it. MS admits to this one and claims it will send out a "fix" but nothing has shown up yet.
If you get desparate, return here and post again giving ALL details, inlcluding dates, time, brand, RAM, Windows Version, and precise description of anything to do with the problem; it might make it possible to make a more accurately targetted response.
When asking for help like this, ALWAYS include ALL pertinent data you can think of or even wonder about.