speeds attainable at
higher altitudes cause an increase in specic range with altitude, resulting in
an increase in the nautical miles covered per pound of fuel burn.
Anytime the outside air temperature is lower than 5°C (40°F) and visible
moisture is present, the pitot static heat and stall warning heat should
be turned on. Also, the inertial air particle separator should be placed in
BYPASS mode.
The fuel tank quantity should be monitored to ensure that a fuel unbalance
condition in excess of 250 pounds does not occur. Normally, both fuel tank
selector valves should be left in the ON position and fuel will ow equally
from each tank. If the fuel loading is approaching an unbalanced condition of
250 pounds, the fuel selector valve corresponding to the wing with the lower
fuel quantity should be turned OFF. Once the two tanks are returned to a
balanced condition, both selector valves should be placed in the ON position.
Supplemental oxygen should be used by all occupants when operating at
cruising altitudes greater than 12,500 feet. It is advisable to use supplemental
oxygen at cruising altitudes less than 12,500 feet when operating at night or
when experiencing fatigue or emotional stress. Excessive use of tobacco
products or alcohol will normally necessitate the use of supplemental oxygen,
even at altitudes lower than 10,000 feet.
WARNING: The ignition switch should be turned ON when operating in
heavy precipitation. Refer to the “Ignition Procedures” in this section for
more information concerning the use of the ignition system.
WARNING: Supplemental oxygen must be available and used as
specied by “14 CFR 91.211” to attain the maximum allowable operating
altitude of 25,000 feet.
WARNING: Oil, grease, soap, lipstick, lip balm, and other petroleum
based substances constitute a serious re hazard when in contact with
aviation oxygen. Ensure hands, face and clothing are all oil-free prior to
handling oxygen equipment.
CAUTION: Prolonged zero or negative “g” maneuvers could starve the
engine oil pump of oil, resulting in serious engine damage.
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