pressing the ALTSEL button on the mode selector.
The desired altitude is selected on the altitude pre-
select controller. Pitch hold, VS, or IAS may be
selected as a mode to fly to the selected altitude.
When outside the altitude bracket trip point, the ALT
SEL ARM annunciator along with the selected pitch
mode is illuminated on the mode selector. When
reaching the bracket altitude, the system automatically
switches to the ALTSEL CAP mode and the previously
selected pitch mode is cancelled. At bracket, a
command is generated to asymptotically capture the
selected attitude. When the altitude is reached, the
ALT SEL CAP mode is automatically cancelled and
the FD switches to the ALT hold mode. If the air data
computer is not valid, the ALTSEL cannot be selected.
The command cue will bias out of view if the VG is not
(m) Standby Mode. The Standby (SBY)
mode is selected by pressing the SBY button on the
mode selector. This resets all the other flight director
modes and biases the command cue from view. While
pressed, SBY acts as a lamp test causing all mode
annunciators to illuminate and the flight director
warning flag on the EADI to come in view. When the
button is released, the mode annunciator lights
extinguish and the flight director warning flag retracts
(n) Go-Around Mode. The Go-Around
(GA) mode is selected by pressing the remote
go-around switch. When selected, all other modes are
reset and the remote GA annunciator is illuminated.
The command cue receives a wings level command
(zero command when roll is zero). The command cue
also receives the go-around command which is a 7
pitch up attitude command. Selecting GA disconnects
the autopilot. The yaw damper remains on.
Once go-around is selected, any roll mode can
be selected and will cancel the wings level roll
command. The go-around mode is cancelled by
selecting another pitch mode or TCS.
Controller provides the means of engaging the
autopilot and yaw damper as well as manually
controlling the autopilot through the turn knob and
pitch wheel, Figure 3B-15. The autopilot system limits
are provided in Table 3B -7.
(1) Pitch Wheel. Movement of the pitch
wheel will cancel only ALT HOLD and ALTSEL CAP.
With vertical modes of VS or IAS selected on the
mode selector, rotation of the pitch wheel will change
the respective displayed vertical mode reference. VS
or IAS mode may be canceled by pressing the mode
button on the mode selector. If VS or IAS are not
selected, the pitch wheel works as described above.
The pitch wheel is always disabled during a coupled
(2) Bank Limit. Selection of the Bank Limit
mode on the autopilot controller provides a lower
maximum bank angle while in the Heading Select
(HDG) mode. LOW will illuminate on the BANK LIMIT
switch. The lower bank limit is inhibited and LOW is
extinguished during NAV mode captures. If HDG is
again engaged, BANK LIMIT will again be illuminated.
Pressing BANK LIMIT when illuminated will return
autopilot to normal bank limits.
(3) SOFT RIDE Push Button. Soft ride
reduces autopilot gains while still maintaining stability
in rough air. This mode may be used with any F/D
(4) TURN Knob. Rotation of the turn knob
out of detent results in a roll command. The roll angle
is proportional to and in the direction of the turn knob
(5) YD ENGAGE Push Button. When the
autopilot is not engaged, the yaw damper may be
utilized by pressing the YD ENGAGE push button.
(6) AP ENGAGE Push Button. The engage
switch is used to engage the autopilot. Engaging the
autopilot automatically engages the yaw damper. The
autopilot may be engaged with the aircraft in any
reasonable attitude. Refer to Table 3B-7 for autopilot
system limits. Autopilot is normally disengaged by
momentarily pressing the control wheel AP DISC
switch. Autopilot may also be disengaged by any of
the following methods.