Elite PI-121, Operator'S Handbook Manual

Page: 221 / 390

199
CHAPTER 5: AIRCRAFT
Altitude alerting is provided by the KAS 297B and alerts
the user with a two second aural tone at +/- 1000 ft from
the target altitude. An ALERT annunciation comes on with
the tone and stays on until 300 ft from the target altitude.
The aural tone also sounds again for two seconds when
the aircraft reaches its selected altitude. The system also
provides an aural warning any time the aircraft’s altitude
varies more than 300 feet from the selected altitude after
level off.
Vertical Speed Pre-Select - to pre-select a vertical speed
the unit must fi rst be indicating FT/MIN. If not, pull the inner
concentric knob when using a mouse or fl ip the toggle
switch to V/S when using an ELITE avionics panel. Use the
knob(s) to select the desired vertical speed. The indicated
up/down arrows show whether a climb or descent has been
selected. To engage the selected rate press ENG and VS
will appear on the indicator. Engaging the vertical speed
function will cancel the ALT mode if being used. There are
several ways to change the rate of vertical speed once the
function is engaged:
by rotating the knob while in V/S mode 1.
by pressing the 2. CWS button on the yoke and
pitching to a new vertical speed value
by pressing the vertical trim switch on the 3.
autopilot. Using the vertical trim switch will
affect a 100 feet per minute change in vertical
speed for every second it is pressed