SECTION 7 CESSNA
AIRPLANE AND SYSTEM DESCRIPTION MODEL T182T NAV III
GFC 700 AFCS
U.S.
ENGINE (Continued)
ENGINE INSTRUMENTS (Continued)
RPM (TACHOMETER)
Engine speed is shown by the RPM indicator, found on all EIS pages
below the manifold pressure indicator. The tachometer indicator uses a
circular scale with moving pointer and a digital value. The pointer
moves through a range from 0 to 2700 RPM. The numerical RPM value
is displayed in increments of 10 RPM in white numerals below the
pointer.
The normal engine speed operating limit (red line) is 2400 RPM. When
engine speed is 2472 RPM or more, the pointer, digital value, and label
(RPM) turn red to show engine speed is more than the limit. The digital
value and label (RPM) will flash. The engine speed (tachometer) is
displayed in the same configuration and location on the LEAN and
SYSTEM pages. If engine speed becomes 2472 RPM or more, while
on the LEAN or SYSTEM page, the display will return to the ENGINE
page.
A speed sensor, mounted on the engine tachometer drive accessory
pad, provides a digital signal to the engine and airframe unit which
processes and outputs the RPM data to the EIS. A red X through the
RPM indicator shows the indicating system is inoperative.
FUEL FLOW
Fuel flow is shown on the ENGINE page by the FFLOW GPH horizontal
indicator. The indicator range is from 0 to 26 gallons per hour (GPH)
with 2 GPH graduations. A green band from 0 to 18 GPH is the normal
operating range, and a green mark at 24 GPH is the minimum fuel flow
for maximum power (32 in.hg. manifold pressure and 2400 RPM). A
white pointer shows the measured fuel flow.
The fuel flow indicator has a white index mark at 16 GPH. This white
index mark and a white index mark on the manifold pressure indicator
at 25 in.hg. show fuel flow and manifold pressure for a normal climb
power setting at 2400 RPM.
(Continued Next Page)
T182TPHBUS-00
7-32
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