Hi.
I´ve got an issue with the parking brake of the A300: I have prepared the plane completely in any aspect (loading, FCU, MCDU) and I am ready to taxi but the parking brake cannot be released. If I press the "v" key on the keyboard the parking brake handle twichtes a little bit, but it does not release the brake. If I simultaneously press the brake pedals while pressing the "v" the handle came out completely but does not turn and release the brake, but goes back into the set position.
The strange thing is that releasing the parking brake works without any problems in codl and dark state (and maybe somewhere between this state and fully prepared). Even if I release the parking brake in cold and dark state and secured the plane by the chocks somewhere in the prepeartion phase of the MCDU, the FMS, EFB or whatever the parking brake automatically activates and I cannot release it.
I would appreciate any help.
A300-600R(F) v1.13