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ALT HLD.
FL CH
Flight level change mode is used for airspeed dependant climbs or descents. For climbs the
AFDS pitch control maintains pitch for selected airspeed and the autothrottle maintains climb
thrust. For descents the power is reduced to flight idle while the AFDS adjusts pitch to maintain
airspeed.
VERT SPD
If vertical speed is not being used the VERT SPD display will be blank. The VERT SPD window
only becomes active when the V/S mode is engaged by pressing the V/S button. When flying at
the altitude selected in the ALT window the V/S mode will not engage. To change altitudes
using vertical speed select a new altitude in the ALT window. Then press the V/S button at
which time 0000 will appear to indicate the plane is in level flight and is ready to start a
climb/descent. Adjust the desired rate using the mouse click area on the control wheel.
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If a climb/descent using FL CH or VNAV has been started the climb may be continued using
vertical speed mode at any time by pressing the V/S button. The current V/S will be shown in
the VERT SPD window and can then be adjusted. Selection of vertical speed mode causes the
autothrottle to automatically select SPD mode.
Altitude Hold
The altitude set in the ALT window is an "armed" altitude. When reaching this altitude using FL
CH or V/S mode the aircraft will level off and enter the altitude hold mode (ALT HLD). VNAV
does not use ALT HLD since it manages this function itself.
The altitude displayed in the ALT window is changed using the mouse clicks on either side of
the knob. Once the altitude in this window is set the aircraft will not change modes or start any
vertical movement until vertical mode is selected. If a new altitude selected and no other modes
are selected the aircraft will remain in ALT HLD mode.
The aircraft can be leveled at any time by pressing the HOLD button at which time the HOLD
bar will light up and ALT HLD will annunciate on the EADI. In this case the aircraft will level
off at the current aircraft altitude regardless of what is displayed in the ALT window. A
climb/descent can be continued by selecting another vertical mode.
The ALT HLD mode is overridden by VNAV when VNAV is in use.
Heading Modes
The AFDS has 2 separate heading hold modes: Heading Hold (HDG HLD) and Heading Select
(HDG SEL). Additionally there is a bank limiter that functions to limit the bank in a turn to 5,
10, 15, 20, and 25 degrees.
HDG WINDOW
The heading in this window is selected using mouse click. The heading displayed in the HDG
window is the heading the autopilot will roll to and maintain in HDG SEL mode.
HDG HLD
This mode is engaged by pressing on the HOLD button. The autopilot will maintain whatever
heading the aircraft is currently on regardless of the heading selected in the HDG window. This
mode allows selection of any heading in the HDG window without the aircraft following the
change.
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HDG SEL
This mode is engaged by pressing the SEL button which is incorporated into the heading knob.
With HDG SEL the autopilot will roll to and maintain the heading selected in the HDG window.
The autopilot will also follow any new headings selected in the HDG window as well.
BANK LIMIT
The degrees of bank that the autopilot will command is set by changing the "bank limit When
the little black tick mark is pointed at AUTO the bank limit is calculated based on airspeed and
altitude. To select 25 press on the mouse click area over "25". To move the tick back toward
AUTO press on the mouse click area over "5". The default setting is AUTO.
Navaid Tracking Modes
LNAV
Lateral navigation is normally associated with an FMC (just like VNAV). But since the FS2000
B767 does not have an FMC the LNAV mode is set to function as a VOR tracking mode.
Engaging LNAV will cause the autopilot to intercept and track the currently selected Nav 1 VOR
course.
BCRS
Selection of BCRS will cause the autopilot to track a localizer backcourse approach. A white
B/CRS means it is 'armed' for backcourse interception and that HDG SEL mode is active. Upon
intercept the B/CRS would move down and turn green to indicate it is the active mode.
LOC
Selection of LOC will cause the autopilot to track the localizer only. It will not pick up the
glideslope even if available. This mode is used to fly a localizer only approach or to intercept
the localizer when you have not yet been cleared for the full ILS approach. The EADI example
　
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