SECTION 7
CESSNA
MODEL 172R (180 HP)
AIRPLANE & SYSTEMS DESCRIPTION
The overhead speaker is located in the center overhead console.
Volume and output for this speaker is controlled through the audio
panel.
I
Each control wheel contains a miniature push-to-talk switch. This
switch allows the pilot or front passenger to transmit on the Com
radios using remote mies.
Each station of the airplane is wired for aviation-style headsets.
Mic and headphone jacks are located on each respective arm rest
and allow for communications between passengers and pilot. The
lsystem
is wired so that microphones are all voice-activated.
Additional wiring provisions inside the audio panel ensure that only
the pilot or front passenger can transmit through the com radios.
NOTE
To ensure audibility and clarity when transmitting with the
handheld microphone, always hold it as closely as possible
to the lips, then key the microphone and speak directly into
it. Avoid covering opening on back side of microphone for
optimum noise canceling.
STATIC DISCHARGERS
Static wicks (static dischargers) are installed at various points
throughout the airframe to reduce interference from precipitation
static. Under some severe static conditions, loss of radio signals is
possible even with static dischargers installed. Whenever possible,
avoid known severe precipitation areas to prevent loss of
dependable radio signals. If avoidance is impractical, minimize
airspeed and anticipate temporary loss of radio signals while in
these areas.
Static dischargers lose their effectiveness with age, and
therefore, should be checked periodically (at least at every annual
inspection) by qualified avionics technicians, etc.
7-48
Oct 4/01
Содержание 172R180HP
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