Integrated Standby Flight Display (ISFD)
Detection of a momentary out-of-limit ISFD condition may cause the attitude
display to blank and the WAIT ATT or ATT:RST message to display. Operation of
the attitude reset switch is required in response to the ATT:RST message. This
will reset the horizon line with the airplane symbol.
- Note: Operation of the attitude reset switch will not correct an inaccurate
alignment.
On the ground, operation of the attitude reset switch must be performed with the
airplane stationary. In flight, operation of the attitude reset switch must be
performed with the airplane in wings level, non-accelerated flight. During the
process, the ATT 10s message displays. Failure to maintain straight and level
flight for 10 seconds may result in an ATT:RST message. If the reset attempt is
unsuccessful, the ATT:RST message remains displayed and the ISFD does not
enter normal operation.