How about this?
Flight director interface with the AP/FD button:
– Press and Hold the TCS:
– Synchronizes the Flight Director with the current airplane attitude.
– Release the TCS:
– The Flight Director returns to the lateral and vertical selection when
the TCS was pressed.
– With Roll/VS/FPA modes the FD maintains the airplane attitude
when the TCS is released.
– Autopilot interface with the AP/FD button:
– If the AP is engaged, pressing and holding the TCS will momentarily
override the AP. Releasing the TCS, the AP resumes airplane
control.
PM