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SECTION 9
SUPPLEMENT 8
Figure 7-1 (continued)
PIPER AIRCRAFT CORPORATION
. PA-28R-210, ARROW
9.
ALTITUDE CAPTURE (CAPT) ANNUNCIATOR - Indicates
the KAS 2978 has switched the autopilot from pitch. attitude hold
(
or vertical speed hold mode into the pitch round out mode (CAPT).
The point, just prior to transfer into altitude hold, at which the
CAPT mode becomes active varies with the vertical speed, i.e. the
higher the rate of climb, the sooner the CAPT mode becomes active;
at low rates of climb the activation of the CAPT mode and transfer
to altitude hold occur almost simultaneously.
10. ALTITUDE SELECT ARM (ARM) ANNUNCIATOR -Indicates
that the altitude select mode is armed to capture the selected altitude.
11. ALTITUDE SELECT MODE (ARM) BUTTON - When pressed
and the selected altitude is displayed, will arm the altitude select
mode. The altitude select (ARM) mode will cancel altitude hold
(ALT) if ALT is already engaged. If altitude select (ARM) mode is
present when GS couple occurs, the GS mode will cancel altitude
select (ARM) mode. The engagement of ALT by the pilot's use of
the ALT switch will cancel the altitude select (ARM) mode.
12. CONTROL WHEEL STEERING (CWS) BUTTON (Not Shown)-
When pressed, in addition to the normal autopilot functions the
("
CWS also interfaces with the KAS 297B. When operating in the
vertical speed hold mode, the CWS will re-sync the vertical speed
hold mode to the current vertical speed of the airplane. If altitude
is displayed when the CWS is pressed, the display will auto-
matically display vertical speed as long as the CWS is depressed.
CWS does not affect the altitude select mode.
13. VERTICAL TRIM CONTROL (Not Shown) - When in the
vertical speed hold mode this control can be used to slew the vertical
speed up or down at
100
fpmJor every second the rocker switch is
held down. If altitude is being displayed at the time the rocker
switch is depressed, vertical speed will be displayed until I to 2
seconds after the rocker switch is released.
REPORT: VB-136S
ISSUED: SEPTEMBER 15, 1988
9-88,
6 of 8
(
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