TCH.1C-27J-2-27JG
WARNING
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MAKE CERTAIN THAT THE CONTROL
SURFACES AND THE SURROUNDING
AREA ARE CLEAR OF TOOLS THAT
COULD INTERFERE WITH CONTROL
SURFACES MOVEMENT.
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CAUTION
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To prevent any damages to components
of directional trim control system, do not
operate the system unless the aircraft
hydraulic system is pressurized.
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2-2.1
GENERAL
Before carrying out the functional test bleed
completely spoiler and rudder control hydraulic
systems. Noise, buffeting and vibration of these
surfaces are symptoms of presence of air in the
hydraulic system.
2-2.2
PREPARATION
1.Connect hydraulic supply to aircraft.
2.Connect external AC power supply to aircraft (refer to
).
3.Connect headset to the external socket of the
interphone system and switch on the system (refer to
NOTE
When the templates installation are required,
apply a light force on the template itself in
order to reduce or annull the possible offset
due to skin surface waveness.
27-00-25
2-4