What's the Flashing B on the controls indicator?

[Mikkall]

I know... stupid, but I can't find a reference.  Anyone know what it means?  F

[MAXsenna]

I know... stupid, but I can't find a reference.  Anyone know what it means?  F

Wheel brake.

Edit: Locked lever I believe.

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[Mikkall]

heh.. thanks.  Never would have guessed that.