(i) Any instructor or observer can enter the loop by pressing the ICS
(j) If more than one instructor or observer are in the loop, any one can
disengage from the loop without deselecting the whole loop.
(k) When ICS is deselected, the light is extinguished and ICS audio is dis-
(1) ICS communication is terminated by the last instructor or observer in
the loop by:
1 Pressing the ICS switchlight.
2 Selecting another interlocked switchlight.
(2) In independent mode:
( a ) The pilot instructor, pilot observer, and pilot trainee can communicate
on the ICS, provided the pilot ICS is operational.
(b) The CPG instructor, CPG observer, and CPG trainee can communicate on the
ICS, provided the CPG ICS is operational.
( c ) The effects of instructor, observer, or trainee switchlight selections
and transmissions are as in integrated mode, except that such effects are confined
to each cockpit.
f. Computer Room Communications.
The following criteria apply:
(1) The instructors can each communicate with computer area personnel, and
(2) The COMP ROOM CALL switchlight on the IOS forward control panel (figure
is not interlocked with the other switchlights
on the IOS console
panel. This allows instructor communications to the computer area even while in
communication with a trainee or another instructor.
(3) When an instructor presses the COMP ROOM CALL switchlight, the switch-
lights on the IOS COMM panel and on the computer room audio control panel flash and
a chime sounds in the computer area.
(4) Computer room personnel can call either instructor by pressing the corres-
pondingly identified switchlight on the computer roan audio control panel.
(5) When this happens, the COMP ROOM CALL switchlight at the COMM panel of the
desired instructor, as well as the switchlight on the computer room audio control
(6) The flashing lights are extinguished if the caller presses the switchlight
(7) The flashing lights become steadily lit when the called party answers by
depressing the flashing switchlight. A communications path between them is then