User manual

Page 59
Aircraft Operation Manual
Piper Cheyenne I, IA, II, IIXL
For ight simulation use only
Operation on BC is identical to front course operation including setting the HSI
Course Pointer to the front course heading, except that automatic Glideslope
capture is „locked out” by the switching circuitry. Localizer deviation on HSI will
have the proper sensing if the front inbound Localizer course was set on the
HSI.
SPECIAL NOTE: Back course mode is only available after selecting APPR mode.
GO-AROUND Mode
The Go-Around mode is primarily designed to assist the pilot in establishing the
proper pitch attitude under missed approach conditions. The Go-Around switch
is located on the autopilot panel in the upper left corner in form of a hidden click
spot.
Activating the Go-Around mode during an approach cancels all Flight Director
modes and disengages the Autopilot, if it is engaged. A wings-level and pitch-up
command is displayed by the FCI and „GO AROUND” is lighted on the Annuncia-
tor Panel. The magnitude of the pitch-up command is adjustable to match Flight
Manual criteria for each aircraft model.
The Go-Around mode may also be used on takeoff for climb-out attitude guidance.
When used for takeoff, the Go-Around mode may be followed with HDG for con-
tinuous heading control during departure. NAV and APPR modes may also be
armed for automatic capture and guidance during the departure sequence.
Go-Around may be cancelled by use of Vertical Trim, Altitude Hold mode, Control
Wheel Steering mode or by turning off the Flight Director.
ALTITUDE SELECT (ALT ARM) Mode
This mode allows the pilot to select an altitude and, upon approaching that selec-
ted altitude, obtain an automatic visual pitch command on the FCI to capture and
hold the preselected altitude. To operate in this mode the pilot must:
1. Set the desired altitude into the „selected altitude” window of the KAS 297
Altitude Selector.
2. Establish a climb or descent as appropriate.
3. Depress the ARM button on the Altitude Selector. This may be done at any
time during the climb or descent before the selected altitude has been at-
tained. „ALT ARM” will light on the Annunciator Panel and on the Altitude
Selector.