Sanden SN3500, Installation Manual

Page: 84 / 150

Appendix D: Sample Airplane Flight Manual Supplement
82005-IM-K Sandel SN3500 Installation Manual Page 10-2
If the remote directional gyro (DG) becomes inoperative, the magnetic fluxgate will
provide the heading, and the resulting heading display will respond much more
slowly than normal. The compass rose changes color from white to amber, and
digital heading numbers will be redlined.
If the fluxgate fails, the SN3500 Navigation Display will continue to display
heading based on the directional gyro (DG) input. The compass rose changes
color from white to amber, heading numbers will be redlined.
Add following text if FCS outputs are Used:
If the “FCS FDBCK ERR” message appears when in autopilot coupled NAV or
APPR mode, immediately monitor the lateral and vertical deviation indicators. If
they are not tracking properly, immediately disable the autopilot and flight director
NAV or APPR mode for the duration of the flight. HDG mode may still be used if
the autopilot tracks the SN3500 HDG bug properly.
Add following text if FCS outputs are not used:
If the “FCS FDBCK ERR” message appears it has no effect on the autopilot
system and no pilot action needs to be taken.
SECTION IV NORMAL PROCEDURES
The SN3500 NAV pushbutton selects the primary navigation source NAV1, NAV2
or GPS1. The selected source will drive the SN3500 deviation indicator and the
autopilot.
ILS override will prevent selection of the GPS as long as an ILS frequency is
tuned on NAV1 or NAV2. This will be annunciated on the SN3500 Navigation
Display.
The SN3500 BRG pushbutton selects the bearing pointer 1 / 2 / both. The ‘M’
pushbutton followed by the BRG pushbutton selects the bearing pointer sources
NAV1, NAV2, GPS1, GPS2, or ADF.
Annunciation of all GPS modes is accomplished by messages on the GPS
receiver as well as on-screen annunciation on the SN3500 .
Add following text if Traffic is installed:
The traffic display mode is annunciated next to the TFC button. There are three
different modes available which control how the traffic targets are displayed.
Press the TFC button repeatedly to cycle through the different modes.
ON: Enables display of all targets within the selected map range (limited by
the maximum range of the installed traffic system).
M: Manual mode. Traffic will be displayed at the selected map range only
when alerting traffic is present, without auto ranging. Display range can be
changed manually.