An autopilot preflight check must be conducted
and found satisfactory prior to each flight on which the
autopilot is to be used.
A pilot must be seated at the controls with the
seat belt fastened when the autopilot is in operation.
Operation of the autopilot and yaw damper is
prohibited during takeoff and landing, and below 200
feet above terrain. Maximum speed for autopilot
operation is 247 knots/0.47 Mach.
During a coupled ILS approach do not operate
the propellers in the 1750 to 1850 RPM range.
5-10. FUEL SYSTEM LIMITS.
contains a form of lead which has
an accumulative adverse effect on
gas turbine engines. The lowest
octane AVGAS available (less lead
content) should be used. If any
AVGAS is used the total operating
time must be entered on DA Form
Operating Limits. Operation with FUEL PRESS
light on is limited to 10 hours. Log FUEL PRESS light
on time on DA Form 2408-13. One standby boost pump
may be inoperative for takeoff. (Crossfeed fuel will not
be available from the side with the inoperative standby
boost pump.) Operation on aviation gasoline is time
limited to 150 hours between engine overhaul and
altitude limited to 20,000 feet with one standby boost
pump inoperative. Crossfeed capability is required for
climb, when using aviation gasoline above 20,000 feet.
Fuel Management. Auxiliary tanks will not be
filled for flight unless the main tanks are full. Maximum
allowable fuel imbalance is 1000 lbs. Do not take off if
fuel quantity gages indicate in yellow arc (less than 265
lbs. of fuel in each main tank). Crossfeed only during
single engine operation.
conforming to MIL-I-27686 PRIST will be added to
commercial fuel, not containing an icing inhibitor, during
fueling operations, regardless of ambient temperatures.
The additive provides anti-icing protection and also
functions as a biocide to kill microbial growth in aircraft
5-11. BRAKE DEICE LIMITATIONS.
The following limitations apply to the brake deice
The brake deice system shall not be operated at
ambient temperatures above + 15°C.
The brake deice system shall not be operated
longer than 10 minutes (one timer cycle) with the
automatically terminate approximately 10 minutes after
gear retraction, turn the brake deice switch OFF.
Maintain 85% NI or higher during simultaneous
operation of the brake deice and surface deice systems.
If adequate pneumatic pressure cannot be provided for
simultaneous operation of the brake deice and surface
deice systems, turn OFF the brake deice system.
In order to maintain an adequate supply of
systems pneumatic bleed air, the brake deice system
shall be turned OFF during single engine operation.
5-12. PITOT HEAT LIMITATIONS.
Pitot heat should not be used for more than 15
minutes while the aircraft is on the ground.
The pneumatic surface deice system shall not be
operated at ambient temperatures below -40'C.