What use is a 'config' button if it simply stays silent when you press it?
In my present type we do a config check at the start of each taxi.
Press the button- no sound- announce "Flap x config check"
The config could easily have failed!
On my last type (Embraer 145) She (the aircraft config aural)used to say
" take off- OK"
So you knew:
1. Config system working.
2. Take off config OK.
On my present type you press the button- hear nothing _so you know:
EITHER:
1. Configured or
2. Config system gone tits up!
When people talk a bout 'lining up the holes in the cheese'- this is one hole that could easily be filled in- permanently!