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PIPER AIRCRAFT CORPORATION
PA-28R-201, ARROW
Figure 7-7 (cont)
SECTION 9
SUPPLEMENT 6
I.
KI 525A HORIZONTAL SITUATION INDICATOR (HSI) -
Provides a pictorial presentation of aircraft deviation relative to
VOR radials or localizer beams. It also displays glideslope devi-
ations and gives heading reference with respect to magnetic north.
2.
NAV FLAG - Flag is in view when the NAV receiver signal is
inadequate. When a NA V flag is present in the navigation indicator
(CDI or KI 525A) the autopilot operation is not affected. The pilot
must monitor the navigation indicators for NA V flags to ensure
that the Autopilot is tracking valid navigation information.
3.
LUBBER LINE - Indicates airplane magnetic heading on compass
card
(10).
4.
HEADING WARNING FLAG (HOG) - When flag is in view the
heading display is invalid. If a HOG flag appears and a lateral mode
(HOG, NA V, APR or APR BC) is selected, the Autopilot will be
disengaged. The Autopilot may be re-engaged in the basic wings
level mode. The CWS switch would be used to manually maneuver
the airplane laterally.
S.
COURSE BEARING POINTER - Indicates selected VOR course
or localizer course on compass card
(10).
The selected VOR radial
or localizer heading remains set on the compass card when the
compass card
(10)
rotates.
6.
TO/FROM INDICATOR FLAG - Indicates direction of VOR
station relative to selected course.
7.
DUAL GLIDESLOPE POINTERS -Indicate on glideslope scale
(8) aircraft displacement from glides lope beam center. Glideslope
pointers in view indicate a usable glideslope signal is being received.
8.
GLIDESLOPE SCALES - Indicate displacement from glideslope
beam center. A glides lope deviation bar displacement of 2 dots,
represents full scale (0.7°) deviation above or below glideslope
beam centerline.
9.
HEADING SELECTOR KNOB (
~
) - Positions heading Bug
(14)
on compass card
(10)
by rotating the heading selector knob.
The Bug rotates with the compass card.
10.
COMPASS CARD - Rotates to display heading of airplane with
reference to lubber line
(3)
on HSI or DG.
II.
COURSE SELECTOR KNOB - Positions course bearing pointer
(5) on the compass card (10) by rotating the course selector knob.
12.
COURSE DEVIATION BAR (D-BAR) - The center portion of
omni bearing pointer moves laterally to pictorially indicate the
relationship of airplane to selected course. It indicates in degrees of
angular displacement from VOR radials and localizer beams or
displacement in nautical miles from RNA V courses.
ISSUED: SEPTEMBER 15, 1988
REPORT: VB-1365
15 of 20,
9-49
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