b. Ground Handling Safety Practices. Aircraft
equipped with turboprop engines require additional
maintenance safety practices. The following list of
safety practices should be observed at all times to
prevent possible injury to personnel and/or damaged
or destroyed aircraft:
1. Keep intake air ducts free of loose articles
such as rags, tools, etc.
2. Stay clear of exhaust outlet areas.
3. During ground run-up, ensure the brakes
are firmly set.
4. Keep area fore and aft of propellers clear
of maintenance equipment.
5. Do not operate engines with flight control
surfaces in the locked position.
6. Do not attempt towing or taxiing of the
aircraft with flight control surfaces in the
7. When high winds are present, do not
unlock the control surfaces until prepared
to properly operate them.
8. Do not operate engines while towing
equipment is attached to the aircraft, or
while the aircraft is tied down.
9. Check the nose wheel position. Unless it
is in the centered position, avoid operating
the engines at high power settings.
10. Hold control surfaces in the neutral
position when the engines are being
operated at high power settings.
11. When moving the aircraft, do not push on
propeller deicing boots; damage to the
heating elements may result.
c. Moving Aircraft on Ground. Aircraft on the
ground shall be moved in accordance with the
(1) Taxiing. Taxiing shall be in accordance
with Chapter 8.
qualified person should be in the pilot's
seat to maintain control by use of the
brakes. When towing, do not exceed nose
gear turn limits, Figure 2-46. Avoid short
radius turns, and always keep the inside or
pivot wheel turning during the operation.
Do not tow aircraft with rudder locks
installed, as severe damage to the nose
steering linkage can result. When moving
the aircraft backwards, do not apply the
brakes abruptly. Tow the aircraft slowly,
avoiding sudden stops, especially over
terrain. In Arctic climates, the main gears
must tow the aircraft because an immense
breakaway load, resulting from ice, frozen
tires, and stiffened grease in the wheel
bearings, may damage the nose gear.
Do not tow or taxi aircraft with deflated
(2) Towing. Towing lugs are provided on the
upper torque knee fitting of the nose strut. When it is
necessary to tow the aircraft with a vehicle, use the
vehicle tow bar. Never exceed the turn limit arrows
displayed on the placard located on the nose gear
assembly. Refer to Figure 2-46.
d. Ground Handling Under Extreme Weather
Conditions. Extreme weather conditions necessitate
particular care in ground handling of the aircraft. In
hot, dry, sandy, desert conditions, special attention
must be devoted to finding a firmly packed parking and
towing area. If such areas are not available, steel
mats or an equivalent solid base must be provided for
these purposes. In wet, swampy areas, care must be
taken to avoid bogging down the aircraft. Under cold,
icy, Arctic conditions, additional mooring is required,
and added precautions must be taken to avoid
skidding during towing operations.