Airplane Flight Manual Supplement

190-00682-02 Rev. D Hawker Beechcraft C90A and C90GT King Air
Page 65 of 117
OTHER PROCEDURES
AUTOPILOT OPERATION
Autopilot/Flight Director mode annunciations on the PFDs displayed in green indicate active
autopilot/flight director modes. Annunciations displayed in white indicate armed
autopilot/flight director modes. Normal mode transitions will flash inverse video green/black
for 10 seconds before becoming steady green. Abnormal mode transitions will flash amber
for 10 seconds before the default mode is annunciated as the active mode.
Default autopilot/flight director modes are Pitch (PIT) and Roll (ROL) modes.
The XFR button on the mode control panel selects the navigation, attitude, and air data
inputs the autopilot / flight director uses. Pressing the XFR button transfers these selections
to the opposite side and causes the autopilot / flight director to drop selected lateral and
vertical modes and engage the default PIT and ROL modes. The pilot must re-select the
desired modes.
VERTICAL MODES
VERTICAL SPEED (VS) MODE:
1. Altitude Preselect................................................................................... SET to Desired Altitude
2. Press VS Button .............................................GREEN ‘VS’, White ‘ALTS’ annunciated on PFD
3. Vertical Speed Reference...........................................................ADJUST using UP / DN Wheel
4. Green ‘ALT; ....................................................................VERIFY UPON ALTITUDE CAPTURE
FLIGHT LEVEL CHANGE (FLC) MODE:
1. Altitude Preselect................................................................................... SET to Desired Altitude
2. Press FLC Button .........................................GREEN ‘FLC’, White ‘ALTS’ annunciated on PFD
3. AIRSPEED Reference................................................................ADJUST using UP / DN Wheel
4. Green ‘ALT; ....................................................................VERIFY UPON ALTITUDE CAPTURE
NOTE
If the altitude preselect is not changed before selecting FLC, the autopilot may re-capture
the current altitude immediately after entering FLC mode. Always ensure that the altitude
preselect is adjusted prior to selecting FLC.
Pressing the SPD button while in FLC Mode toggles the airspeed reference between
KIAS and Mach. FLC will automatically transition from Mach to KIAS reference during a
descent when the current Mach reference equals 220 KIAS. FLC will not automatically
transition from KIAS to a Mach reference during a climb.