GTG 3 air systems. The alarm indicators are
labeled ENG ROOM 1 and ENG ROOM 2 are
identical to those on the ENG ROOM 1 and ENG
identical as to the systems monitored, but they
ROOM 2 sections. There is a slight difference in
differ in the engines monitored. We will describe
the labeling of the last alarm indicator. It is
the alarm indicators only in the ENG ROOM 1
labeled STARTER AIR OVERTEMP vice
and GTG 3 sections. The alarm indicators
START AIR OVERTEMP. Both alarm indicators
that are the same on the GTG 3 section
have the same function.
and ENG ROOM 1 section will not be described
separately.
PORT SHAFT DEMANDS PANEL
ENG ROOM 1 SECTION.--Under this
heading are three alarm indicators that monitor
This panel is functionally identical on both
the engine room air systems. The alarm
consoles, but has slight physical differences. The
indicators are labeled PRAIRIE AIR TEMP
panel shown in figure 5-9 is for the DD console.
HI, START AIR OVERTEMP, and HIGH
It has the start/stop and emergency controls for
PRESS AIR LO. These indicators illuminate
GTM 2B, DDIs to monitor shaft speed, an alarm
red when the parameter of the applicable system
test section, a power supply monitoring section,
monitored exceeds or drops below its designed
and a console malfunction monitoring section. It
set point.
is located on the left-hand side of the PACC in
The GTM air systems for ENG 2A, ENG 2B,
bay No. 1. This panel is divided into six
and GTG 1 are each monitored by three identical
sections labeled PORT SHAFT PROPULSION
alarm indicators. These alarm indicators are
DEMANDS, 2B EMERGENCY CONTROLS,
labeled ICING, ANTIICING INSUFFICIENT,
MALFUNCTION, TEST, 2B START/2B STOP,
and DUCT PRESS LO. Either alarm indicator
and POWER.
illuminates red if the monitored parameter for that
engine exceeds or drops below its designed
operating parameter. The next two alarm
PORT SHAFT PROPULSION
indicators, labeled MASKER AIR OVERTEMP
DEMANDS Section
and BLEED PRESS LO, are located under the
headings ENG 2A and ENG 2B, respectively. As
This section has two thumbwheels and two
these systems are common to both engines, only
DDI displays. The PACC operator uses the
one of each alarm indicator is required in each
thumbwheels to select a plant parameter address
engine room. These alarm indicators illuminate
which will be displayed in the adjacent DDI.
red if the monitored parameter is not in the
These selected parameters are displayed in the
designed operating range.
appropriate units of measurement. The PORT
SHAFT PROPULSION DEMANDS section on
GTG 3 SECTION.--This section has five
the CG console is functionally the same, but it
alarm indicators and is used to monitor the
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