Page 37 - March19

In-Flight Operation
When the Furnishing/Interiors Master switch has
been placed in the on position the MSU will cause all
windows to assume whichever state is commanded
by the cabin shades master switch located in the
cockpit. This will terminate the 10-minute pre-
boarding timer if it was still in effect. If the Cabin
Shades Master switch is set to “DARK” this will
override the individual control panels and cause all
cabin shades to assume a dark state.
If the Cabin Shades Master switch is set to “CLEAR”
this will override the individual control panels and
cause all cabin shades to assume a clear state.
If the Cabin Shades master switch is set to “PAX,”
then the individual control panels at each window
location will become active and will initially default
to full clear.
Window shades are designed to cycle from dark
to clear or clear to dark in 10 seconds using a
continuous press or five momentary presses at typical
indoor temperatures. The factory acceptance test
is performed in a hangar. It has been noted that
at altitude, the extreme cold on the outside of the
window can cause window shades to take much
longer to transition.
There is also a lightning bolt switch which will cause
the shade to skip to either be clear or opaque at its
current level of shade.
Post Flight / De-Boarding Operation
At the end of the flight when the aircraft is shut
down and the Furnishing/Interiors Power Switch
is turned off, the windows all go to a clear state for
approximately five minutes. At the end of this time
period if the cabin door hasn’t been opened then the
windows will return to dark. If the door has been
opened, or the B300’s entry light switch has been
pressed, then the windows will begin a new timer to
remain clear for 10 +/- one minute before returning to
full dark.
Emergency Egress Window Operation
The windows located just forward of the door on
the LH side or in the emergency escape hatch
are equipped with independent emergency power
supplies. When either the five-minute timer at system
shutdown or the 10-minute timer door open/entry
switch end or if the main control unit loses power on
MARCH 2019 KING AIR MAGAZINE •
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