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SkyView
HDX System
General Maintenance Manual, Revision F
6.3
SV-ADAHRS-200 ADAHRS Module
ADAHRS is an acronym for Air Data Attitude Heading Reference System. The Primary Flight
Display (PFD) functions on a SkyView HDX display are generated using data from a group of
calibrated sensors built into an SV-ADAHRS-200 module (see
). All sensors are solid
state (i.e., there are no moving parts). These sensors include accelerometers, which measure
forces in all three directions; rotational rate sensors, which sense rotation about all three axes;
pressure transducers for measuring air data; and magnetometers on all three axes for measuring
magnetic heading.
Pitot, Static, and AoA lines are connected to an SV-ADAHRS-200 module
.
An OAT sensor can
also be connected to an SV-ADAHRS-200.
Figure 25: SV-ADAHRS-200
for a mapping of PFD functions and ADAHRS inputs and sensors.
Table 4: ADAHRS Inputs and Sensors and PFD Functions Matrix
PFD
Functions
GPS Pitot
Static AoA
Internal
Magneto
meter
Remote
Magneto
meter
Rate
Sensors
Accelero
meter
OAT
Airspeed
✓
✓
Altitude
✓
Angle of Attack (AoA)
✓
✓
Attitude
(GPS used during Pitot
failure)
✓
*
✓
✓
✓
✓
Slip
✓
Density Altitude (DA)
✓
Flight Path Marker
(Internal Magnetometer)
✓
✓
✓
✓
✓
✓
Flight Path Marker
(External Magnetometer)
✓
✓
✓
✓
✓
✓
Ground Speed (GND)
✓
Heading (HDG)
(Internal Magnetometer)
✓
✓
✓
✓
✓
