Specifications

SECTION III
INSTRUMENTATION AND AVIONICS
MODEL 560
Outer, middle, and inner marker receivers are incorporated in the VIR-432 receivers. The visual
marker beacon annunciators are located in the PFD display, on the center-right side. Refer to the
Electronic Flight Instrument System (EFIS) discussion in this section. The copilot’s system is a duplicate of
the pilot’s, except for the fact that there is no autopilot guidance capability internal to the copilot’s IC-600
display Guidance Computer (DGC).
VIR-432 VHF NAV SELF-TEST
During self-test, the VIR-432 provides VOR, ILS, and marker beacon test outputs. The following steps
provide the procedures required and the results to be expected when performing the self-test.
It is designed to give the pilot a simple and accurate method of checking VHF NAV system integrity. It
is not a substitute for FAA required periodic accuracy checks.
NOTE
The NAV TEST should not be performed while the autopilot is
coupled to the flight guidance system.
ILS TEST
1. Tune appropriate NAV receiver to any localizer frequency (any frequency between 108.1 and
111.9 that ends in an odd number). A signal on the frequency will not interfere with the test.
The NAV to be tested must be selected on the DC-550 display controller.
2. Press the TEST button on the CTL-432.
3. The NAV and GS flags will come into view.
4. After approximately 3 seconds, the flags will go out of view, the EHSI or HSI lateral deviation bar
will deflect right approximately 2/3 of full scale and the glideslope pointer will deflect down
approximately 2/3 of full scale.
5. The VIR-32 will return to normal operation after approximately 15 seconds, even if the TEST
button is held.
6. The marker beacon annunciators in the pilots PFDs will illuminate and blink with the NAV test. A
30-Hz tone will be heard over the marker audio if it is selected.
VOR Test
1. Tune appropriate NAV receiver to an operable VOR frequency. A specific frequency is not
required. A signal on the frequency will not interfere with the self-test. Rotate the bearing
pointer to approximately 0 degrees. The NAV to be tested must be selected on pilot's DC-550
display controller.
2. Press the TEST button on the CTL-432.
3. The NAV flag will come into view.
4. After approximately 2 seconds, the flag will go out of view, the HSI lateral deviation bar will
approximately center, and a TO indication will appear.
5. The bearing pointer(s) selected to the VIR-432 being tested will indicate approximately a 0
degree magnetic bearing.
6. The VIR-432 will return to normal operation after approximately 15 seconds, even if the TEST
button is held.
7. The DME will also test and blink, finishing with an indication of AOK and a display of 100 nautical
miles on the indicator and on the PFD.
8. Test procedures using a VOT are standard. With the NAV receiver tuned to the published
frequency of the test facility, the HSI will indicate 0° when centered with a FROM flag, and 180°
centered with a TO flag.
I 3-28 Configuration AA 56OMB-01