Piper SENECA III - Page 292

SECTION
9
PIPER
AIRCRAFT CORPORATION
SUPPLEMENT 5
PA-34-120T,
SENECA
III
(i)
VOR
PROCEDURES
(1)
Tune NAV
receiver
to
appropriate
frequency.
(2) Set
desired
heading with
the
HDG
BUG
to
intercept
radial
and
engage
HDG
and AP.
(Maximum
recommended
intercept
angle
90°.)
(3)
Select
desired
radial
and
engage
NAV. The FCS
will remain
on
H
DG
as
indicated
on
the annunciator panel and in AR M
on
the
NAV
mode.
When the
airplane
approaches the
beam,
the
system
will
automatically couple,
HDG
will
decouple and
track
in
NAV
mode
and
indicate
CPLD
on
the annunciator
panel.
(4)
A
new
course
may
be
selected
over
the
VOR
station
when
operating
in
the
NAV
mode, by
selecting
a new
radial
whenthe
To-From
indication
changes.
(5)
For
VOR
approach,
see
approach procedure.
(j)
APPROACH
PROCEDURES
(1)
Tune
ILS
or
VOR.
(2)
Set
CDI
for
front
course.
(3) Set
Heading
Bug
and
engage
AP and HDG
tointerceptselected
CDI
course
beam
at
desired angle. (Maximum
recommended
intercept
angle
90°.)
(4)
Engage
APPR
and
note
APPR
ARM
on
the
annunciator.
(5)
When
airplane
approaches the
selected
CDI
course,
APPR
will
couple,
HDG will
decouple, the AP
will track LOC,
or
VOR,
and
CPLD
will
illuminate
on
the
annunciator
panet
(6)
When
the
glide
slope
beam
is intercepted,
the
glide slope (GS)
will
couple
automatically
and
indicates GS
on
the
annunciator
panet
If the
ALT
mode
was
engaged
prior
to
intercepting
the
glide
slope,
it
will
automatically
disengage
when
GS
couples.
The
AP
will
now
track
LOC and
GS. Adjust
throttles
to
control
speed
on
descent.
Set
HDG
bug
for
missed approach
but do
not
engage
HDG.
(7)
When
middle
marker
signal
is
received,
system
will
auto-
matically
switch
to
a
more
stable track
mode.
NOTE
Operation
of
marker
test
function after
APPR
CPLD
will reduce
the
flight control
system
gains.
If this
should
occur,
the
APPR
switch
should
be
recycled.
REPORT:
VB-1Ìtà.
ISSUED:
APRIL
21,
1981
|
9-44b,
14 of 16