Pilot’s Operating Handbook
7-83
DO NOT USE FOR FLIGHT OPERATIONS
Section 7
AIRPLANE & SYSTEMS DESCRIPTIONS
100 SERIES
Systems
Ng
% RPM indicator is shown by the
indicator found on each EICAS
page. The instrument shows the percent of gas generator RPM based on a
gure of 100% at 37,500 RPM. The instrument is electrically-operated from
the compressor turbine tachometer-generator mounted on the lower right
portion of the engine accessory gearbox. The
Indicator uses a circular
scale with a moving pointer and a digital value indicating Gas Generator
Percent RPM in increments of 0.1%. The pointer moves through a range of
0.0% to 110.0%.
The instrument markings indicate a normal operating range (green arc) from
52.0% to 101.6%, and a red line at 101.6%. If the
speed is greater than
101.6% for longer than 2 seconds, the title, pointer and digits will ash red.
Otherwise, the title and pointer are white and the digits are green.
% RPM Indicator
Fuel Flow Indicator
A digital value for FLOW PPH is included on both the SYSTEM and FUEL
EICAS pages.
The fuel ow transducer is located in the fuel line between the fuel control unit
and the ow divider.
Figure 7-67 – Fuel Flow Indicator
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