The superior aerodynamic efficiency of your airplane manifests
itself in the normal indicated cruise speeds. Your airspeed in-
dicator
is
marked with a green arc to 150 mph and a yellow arc
starting at 150 mph and ending at 189
mph, When cruising at
altitudes below approximately 8,000 feet, it
is
possible to cruise
at indicated airspeeds above 150 mph and in the yellow
cautfon-
ary arc. The yellow arc indicates speeds at which the pilot must
exercise caution
when encountering rough air or severe gusts.
Rough air is considered to be a condition uncomfortable to pilot
and passengers. Therefore, under these conditions, do not operate
at airspeeds within the yellow arc.
'The following
mahod
is
useful for monitoring remaining fuel,
After take-off with both tanks full, use one tank only until one
hour of
fuel
is
depleted from it. Then switch to the second tank
and record the time
of
switcla-over on the elapsed
time
indicator
on
the panel clock.
Use
all the fuel in the second tank. Then,
the
time of fuel remaining in the first tank
is
the
time it took
to deplete
the second tank, less one hour. &fo%~yever, this
will
be
correct only
if
the cruise altitude and power setting remain un-
changed,
If
a
tank runs dry and the engine loses power, retard
the throttle before restarting. Restarting with advanced throttle
may
causf ngine over-speeding and can lead to mechanical
rnalfuncei
LET-DOWN
PROCEDURES
It
is
recommended that power let-downs be made in order to
keep
the engine from cooling too rapidly. By reducing the n-ian-
ifoM pressure to some figure below cruise setting and then re-
taining cruise speed, a let-down can be
n~adc. without excessive
cooling of the engine.
Do
not open the co~rl flaps for let-down.
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