OPERATOR’S MANUAL
CMA-9000 FLIGHT MANAGEMENT SYSTEM
SECTION 12
NAVIGATION SENSORS
GENERAL
When configured for civil navigation, the FMS’ navigation function follows a hierarchical navigation mode system
characterized by the following decreasing priority order:
• GPS (using TSO-C129a B1/C1sensor)
• DME/DME (using TSO-C66c DME receiver)
• VOR/DME (using TSO-C66c DME receiver and TSO-C40c VOR receiver)
• Inertial (using TSO-C4c, TSO-C6d units)
• Dead reckoning
The FMS will use GPS data for navigation provided the GPS Horizontal Integrity Limit (HIL) meets the phase of
flight requirement. Otherwise, the FMS will select the next best navigation mode meeting the TSO-C115b
accuracy requirement (95% confidence factor) for the phase of flight, following the above priority order.
The civil navigation configuration option is intended to fully comply with TSO-C129a, TSO-C115b, AC20-138A
and AC20-130A.
The FMS supports the following navigation modes: GPS, DME/DME, VOR/DME, Inertial and Dead-Reckoning
(DR). The availability of specific navigation modes depends on the equipment configuration.
Available sensors are selected in the following order of priority, based on nominal accuracy performance and
assuming good geometry:
Navigation modes Applicability
GPS GPS sensor
DME/DME DME sensor
VOR/DME NAV, DME sensors
Inertial IRS sensor
Dead Reckoning N/A
If one or several equipment supporting a navigation mode is not configured, then only a sub-set of the above
mentioned navigation modes will be available.
Transition from one mode to another is automatic. Manual deselection of all the navigation modes is also
possible using the DESELECT 1/1 page (as described in Section 17).
Page 12-1
August 17, 2010
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