Specifications

SECTION III
INSTRUMENTATION AND AVIONICS
MODEL 560
The ADF bearing information may be selected on the "O" bearing needle of the pilot's electronic
primary flight display (PFD). If dual ADFs are installed, the "
~ " bearing pointer will display ADF 2, when
selected. Selection is accomplished by means of the bearing knobs (O and
~ ) on the respective DC-550.
On the PFDs the single bar needle displays ADF 1 (when ADF is selected) and the double bar needle
displays ADF 2 (when selected, if installed). In the standard single ADF installation, ADF information is not
available to the “
~ ” needle.
C-14D COMPASS SYSTEM (PILOT'S)
The flight director and the flight director display on the pilot’s DU-870 Primary Flight Display (PFD), the
autopilot (except when AP XFER FD 2 is selected), and the standby horizontal situation indicator are driven
by the pilot's C-14D slaved gyro system. The system consists of a directional gyro, a flux detector, a mode
selector switch, a remote compensator, and a slaving indicator on the primary flight display (PFD). The
directional gyro operates on 28 volts DC from the emergency bus, therefore power is available whenever
the battery switch is placed in the BATT position or the EMER position. In the event of a DC power failure,
placing the battery switch to the EMER position will regain the pilot's C-14D and provide gyro stabilized
heading information through the standby HSI. The mode selector switch is located on the left switch panel
and is labeled LH GYRO SLAVE. It has two positions; MAN and AUTO. In MAN position, the C-14D gyro
operates in unslaved (gyro) mode. In the AUTO position, it operates in slaved (gyro stabilized magnetic)
mode. When MAN is selected, the HSI compass card can be moved left or right at a rate of 30 degrees
per minute by toggling the LH/RH switch, located to the right of the MAN/AUTO switch, to the RH or LH
position. Manual operation gives accurate short term heading reference when magnetic information is
unreliable.
Under normal operating conditions, the pilot's C-14D gyro slave switch should be left in the AUTO
position. Fast slaving in the AUTO mode occurs at a minimum rate of 30 degrees per minute and will
continue at that rate until the gyro is slaved to the magnetic compass heading. It will then continually
maintain a slow slaving rate of 2.5 to 5.0 degrees per minute. If the gyro slave switch is in AUTO position
at power-up, the system will slave itself. If the gyro has obtained operating speed in the MAN position, or is
otherwise unslaved while operating, the LH/RH switch must be activated to start fast slaving action in the
AUTO mode.
C-14D COMPASS SYSTEM (COPILOT'S)
The copilot's C-14D compass system is the same as the pilot's C-14D. The copilot's C-14D system
drives the copilot’s flight director and the flight director display on the copilot’s PFD, and when AP XFER FD
2 is selected on the autopilot transfer switch, it provides heading guidance to the autopilot through the
pilot’s IC-600 Display Guidance Computer.
Two RH GYRO SLAVE switches, marked MAN/AUTO and LH/RH, are located low on the copilot's
instrument panel. Operation of the switches is the same as described above in the pilot's C-14D system.
MARKER BEACON SYSTEM
The marker beacon, VOR, localizer and glideslope receivers are all combined into one navigation
receiver. Each NAV receiver encompasses all of those functions. System operation is similar and equally
automatic if either the standard or optional VHF radio systems are installed.
NAV 1 provides signals to the following:
1. Marker beacon data to the pilot's marker beacon annunciators on the center right side of his
primary flight display (PFD).
2. VOR, localizer (ILS), and marker beacon signals to the audio control panels.
NAV 2 provides signals to the following:
1. Marker beacon data to the copilot's marker beacon annunciators on the center right side of his
primary flight display (PFD).
2. VOR, localizer (ILS), and marker beacon signals to the audio control panels.
I 3-32 Configuration AA 56OMB-01