King Air C90GTi, Руководство по подготовке пилотов

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Figure 16-46. AFD Reversions
KING AIR C90GTi/C90GTx PILOT TRAINING MANUAL
FOR TRAINING PURPOSES ONLY
16-23
for distribution to the appropriate display or
component. AHRS 1 data is displayed on the
pilot displays while AHRS 2 data is displayed
on the copilot display. Each AHRS can pro-
vide reversionary support to the other. The
AHRS switch on the reversionary control
panel controls reversionary operation.
Compass controls are provided for control of
the slaving operations for the pilot and copi-
lot compass systems. The controls are labeled
DG–FREE–NORM and SLEW + / – (Figure
16-45) . The DG switch selects whether the re-
spective heading is “slaved” to the compass
(NORM) or acting as an unslaved, free unit
(FREE). When the FREE Mode is selected,
the pilot can manually adjust the heading by
moving the SLEW switch to either the + or –
position.
Figure 16-45. Heading Slave and Slew
REVERSIONARY
OPERATIONS
AFD Reversion
The pilot’s PFD and the MFD are designed to
provide reversionary support to each other in
the event of a single display failure. Rever-
sionary display switching for the pilot’s PFD
or the MFD is accomplished via the PILOT
DISPLAY switch on the reversionary control
panel (Figure 16-46). Selecting the remaining
AFD will display a composite image.
When an AFD fails a xTLK annunciator will
appear on the remaining display. This indicates
that the other displays have lost communica-
tion with the failed display. This helps identify
that an actual display failure has occurred, not
a brightness control problem.
The selection of PFD or MFD is always
made toward the unit that is still functional
(e.g., if the PFD is still operating, select
PFD). If the PFD position of the PILOT
DISPLAY switch is selected, the composite
display will appear on both the pilot and
copilot PFDs. Selecting the MFD position of
the switch will result in the composite display
appearing on only the MFD
(Figure 16-47).
16
A
VIONICS