Saab 340B, Operation Manual

Page: 203 / 670

AUTOFLIGHT, CAT II
Operation
Aircraft Operations Manual
3.2
O
PAGE 5
Apr 01/15
2. NORMAL OPERATION (Cont’d)
CONDITIONS NORMAL PROCEDURES
2.1 AUTOPILOT
GENERAL The autopilot and its various modes shall normally be used to the greatest pos-
sible extent.
As a general rule, the pilot flying the aircraft (1/P) shall operate the autopilot.
The AP modes shall be monitored by use of the EADI. The light in the mode
buttons in the MSP shall only be regarded as a reminder of depressed but-
tons. There are two FDs and either of them can be connected to the AP.
Selection of L/R FD to the AP is performed by pressing the APXFR button
on AP CONTROL PANEL AND ANNUNCIATED IN EADI by
AP / AP (AP connected L resp R FD).
When the autopilot is used below 1 500 ft., 1/P must keep one hand on the con-
trol wheel and have his feet on the rudder pedals, prepared to disengage the au-
topilot and take over manual control if necessary.
NOTE
2.2 FLIGHT
DIRECTOR,
GENERAL The FD V − shaped (magenta − colored) command bar shall normally be selected
on both EADIs. However, the displayed command bars can be deselected by
pressing the FD button on the DCP except in APPR mode. Between L/R FD
there is a cross talk function active in all modes except APPR and HALF BANK.
The cross talk function is used to synchronize a selected mode on one side to
the other. After selection of APPR mode reactivation of the cross talk function is
performed by selection of another lateral mode on both sides MSP or by press-
ing GA button on either power lever.
At manual flight using FD in VS or IAS mode. If selecting a different Vertical
Speed or Airspeed than present and thereafter selecting AP XFR, split will occur
between the Flight Directors. The (XFR) selected FD will capture the present VS
or IAS, and the other FD remains with the selected VS or IAS. However, pressing
VERT SYNC button on the failing side or engaging the AP will synchronize the
Flight Directors.
NOTE
2.3 FD COMMAND
BARS
ACTIVATION/
DEACTIVATION 1. FD button on DCP panel PRESS . . . . . . . . . . . . . . . . . . . . . . . . .
− Check FD command bar to appear/disappear on EADI.