Piper Turbo Saratoga PA-32-301T Pilot's Manual page 297

PIPER AIRCRAFT CORPORATION SECTION 9
PA-32-301T,
TURBO
SARATOGA SUPPLEMENTS
Figure 7-1
(cont)
6. PREFLIGHT TEST
(TEST) BUTTON
-
When momentarily
pushed, initiates preflight test sequence which automatically
turns
on
all annunciator
lights, tests the roll rate monitor,
checks the
manual
trim drive voltage, checks the manual electric trim
monitor
and
tests all autopilot valid and dump logic.
If
the preflight
is,
successfully passed, the AP annunciator light will
flash for
approx-
imately 6 seconds
(an
aural tone will also
sound simultaneously
with the annunciator
flashes).
The
autopilot
cannot
be engaged
until the preflight
test
is
successfully
passed.
7.
BACK COURSE
APPROACH
(BC)
MODE
SELECTOR
BUTTON
-
When pushed,
will select
the Back Course Approach
mode. This
mode
functions
identically to the
approach mode
except
that response to LOC signals is
reversed.
8.
APPROACH (APR)
MODE
SELECTOR
BUTTON
-
When
pushed,
will select
the
Approach
mode. This
mode provides all
angle intercept
(with HSI) or
a
fixed angle intercept of 45°
(with
DG), automatic beam capture
and tracking
of VOR, RNAV or
LOC
signals.
The tracking gain of the APR mode is greater than
the gain in the NAV mode. The APR annunciator will
flash until
the automatic
capture
sequence
is initiated.
9. NAVIGATION (NAV) MODE
SELECTOR
BUTTON
-
When
pushed,
will select the Navigation mode. The mode provides
all
angle intercept (with
HSI) or a fixed angle intercept of 45°
(with
DG),
automatic beam capture and tracking
of VOR, RNAV or
LOC
signals. The NAV annunciator
wil
flash until the automatic
capture sequence
is initiated.
10. HEADING (HDG)
MODE
SELECTOR BUTTON
-
When
pushed,
will select
the Heading
mode,
which
commands the
airplane to turn to and maintain the heading selected by the heading
bug on the DG or HSI. A
new
heading may be selected
at
any
time
and
will result in the
airplane
turning to the new heading with
a
maximum
bank angle of about 20°. Selecting
HDG mode will
cancel NAV, APR or BC track modes.
ISSUED: AUGUST
6, 1982 REPORT:
VB-1070
9-73