Cessna 172N - Page 12

CESSNA
MODEL
172N
Standard
Tempera-
ture
Pressure
Altitude
SECTION
1
GENERAL
is 15"C
at
sea
level
pressure
altitude
for
each 1000
feet
of
altihrde.
Pressure Altitude is the
altitude
read
from an altimeter
when
the
altimeter's
barometric
scale has
been
set to 29.92
inches of mercury
(1013
mb).
ENGINE
POWER TERfiIINOtOGY
BraEe Horsepower is
the
power
developed
by the
engine.
Revolutions
Per
Minute
is engine
speed.
Static RPM is ergine
speed
attained during
a full-throttle
en-
gii.e
mnup
when the airplane is on
the
ground
and
stationary.
PERFOR'VIANCE
AND
FTIGHT PTANNING
TER'UINOLOGY
BHP
RPM
Static
RPM
AIR
PtA
N E
Demon-
Demonstrated
Crosswind Velocitv
is the
velocitv
of the cross-
strated e control
of the
airplane
Crosswind during
takeoff and
landing
was acfually
demonstrated
during
Velocitv certification
tests.
The
value
shown
in
not
considered
to be
Iimiting.
Usable Fuel
Unusable
Fbel
GPH
NMPG
Usable
F\rel
is
the fuel available for flight
planning.
Unusable
Fuel is the
quantity
of
fuel that
can
not be
safely
GaA-in
Titrfri.
Gallons
Per
Hour
is the amount of fuel
(in gallons)
consumed
ffi
Nautical Miles Per
Gallon
is
the
distance
(in
nautical
miles)
gallon
of fuel consumed
at
a
spe-
cific
engine
power
setting
and/or
flight configuration.
g g
is
acceleration
due
to
gravity.
WEIGHT
AND BALANCE TER'VIINOLOGY
Reference
Reference
Datum is
an imaginary
vertical
plane
from
which
Datum
ffitances
are
measured
for
balance
purposes.
Station
Station
is a
location along
the
airplane
fuselage
given
in
Tffis
of
the distance from
the
reference datum.
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