3. B. (7) (g) 5
Turn Knob
When the TURN knob is rotated out of detent, with the
autopilot engaged, any previously selected flight director
roll mode is cancelled and a turn knob signal is applied to
the FZ-820 Flight Guidance Computer to change the aircraft’s
roll attitude reference (refer to Figure 259, sheet 1). The
turn knob command is limited to t30
degrees by knob
excitation and is routed to Figure 259, sheet 4. The turn
knob command is then routed to the aileron servo drive, as
previously described in paragraph 3.B.(7)(g)~.
Returning the TURN knob to detent will return the airDlane
to a win~s-level condition and
mode.
Other lateral modes can
knob is returned to the detent
~ Go-Around (Wings Level)
The go-around mode is normally
then engages the headi;g-hold
be selected after the TURN
position.
used to transition from an
ILS approach to a climb out condition when a missed approach
has occurred. The pilot selects go-around by pressing the
TOGA button located on either outboard throttle handle.
With go-around selected, all armed and active flight
director modes are cancelled, and the autopilot is
disengaged. Laterally, the pilot sees a wings level command
on the PFD.
After go-around mode selection, HDG SEL mode can be selected
to cancel the wings level roll command.
The go-around mode is cancelled by selecting another pitch
mode, engaging TCS, or engaging the autopilot.
The go-around mode is annunciated on the PFD by a green GA.
22-14-00
Page 298.100
Aug 15/91
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