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SECTION 9
SllPPLEMENT 7
Figure 7-1 (cont)
PIPER AIRCRAFT CORPORATION
PA·28R·201, ARROW
8.
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. Glideslope coupling is
inhibited in the Back Course Approach mode.
9.
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, RNA V or
LOC signals plus Glideslope coupling in the case of an ILS. 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. On the KA 185 Remote Mode Annunciator,
APR ARM will annunciate until the automatic capture sequence is
initiated. At beam capture, APR CPLD will annunciate.
10.
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 will flash until the automatic
capture sequence is initiated. On the KA 185 Remote Mode
Annunciator, NA V ARM
will
annunciate until the automatic
capture sequence is initiated. At beam capture, APR CPLD
will annunciate.
II. HEADING (HDG) MODE SELECTOR BUTTON - When
pushed, will select the Heading mode, which commands the air-
plane 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 22°. Selecting HDG mode will
cancel N A V, A PR or BC track modes.
12. ALTITUDE HOLD (ALT) MODE SELECTOR BUTTON -
When pushed. will select the Altitude Hold mode. which commands
the airplane to maintain the pressure altitude existing at the
moment of selection. Engagement may be accomplished in climb,
descent, or level flight. In the APR mode, altitude hold will auto-
matically disengage when the glideslope is captured.
13. FLIGHT DIRECTOR (FD) MODE SELECTOR BUTTON -
When pushed, will select the Flight Director mode (with KC 192
Autopilot Computer only), bringing the Command Bar in view on
the KI
256
and will command wings level and pitch attitude hold.
The FD mode must be selected prior to Autopilot engagement.
REPORT: VB-1365
ISSlIED: SEPTEMBER 15, 1988
9·68,
14 of 28
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