Audio Panel '7-43 - Piper ARCHER III Pilot Operating Handbook

PA-28-181,
ARCHER
IrI
SECTION
7
DESCRIPTION & OPERATION
Autopilot (Optional)
(continued)
AUTOPILOT FEATURES (continued)
Expanded
Engagement Envelope
(Optionat)
Expanded engagement envelope
allows autopilot
engagement
up
to
the
pitch
and
roll
attitudes shown
in
the autopilot
limitations of
Section
2. rf
the
autopilot
is
engaged
at
a
pitch or roll
attitude
within
the expanded engagement envelope
but beyond the maximum autopilot command limits,
the airplane
will
be
pitched
or rolled to
the
maximum autopilot command limits.
Audio
Panel
The
audio panel contains
traditional transmitter and receiver
selectors, as
well
as an
integral intercom
and marker beacon system. The marker
beacon
lights
appear on the PFD
and the
marker
beacon
audio
can be heard over
the
headsets
or
cockpit
speaker.
In
addition,
a
clearance recorder records
the
last 2Vzminutes
of
received audio.
Lights
above
the
audio panel selection buttons
indicate
which
selections are
active.
If
a
failure of
COMI
and
COM2
occurs, a
fail-safe
communications path is
available between the
pilot's
headset/microphone
and
COMI.
The fail-safe
communications path
is
activated
by pulling
the
AUDIO
MKR
circuit
breaker located on the circuit
breaker panel.
The
PILOT knob
located towards the bottom of
the audio panel allows switching
between
volume
and squelch control
as
indicated by illumination
of
VOL
or
SQ.
Turn
the
knob to
adjust
intercom volume or
squelch. The
MAN
SQ
key must
be
selected
to
allow
squelch adjustment.
The red DISPLAY
BACKUP button at the bottom
of
the
audio panel allows
manual selection
of
the
reversionary display
mode.
REPORT: VB-2749
7_43
ISSUED:
December 22,
2017