Embraer EMB145 Operation Manual page 321

LIMITATIONS
 For RNAV operations in terminal airspace, obstacle clearance
protection, up to the Final Approach FIX (FAF), will assume that
airplane comply with the required RNAV accuracy requirements;
 Obstacle clearance altitude is based upon the infrastructure giving
the poorest precision;
 The minimum flight crew are 2 Pilots;
 The system must display essential information in the Pilot's primary
field of view such as:
 Lateral deviation;
 TO/FROM waypoints;
 Failure flag (failure of RNAV system);
 Where DME/DME/IRS is used, the flight crew must ensure
initialization on the runway either by means of a manual runway
threshold or intersection update, as applicable. This is to preclude
any inappropriate or inadvertent position shift after takeoff;
 Where GNSS is used, the signal must be acquired before the takeoff
roll commences and GNSS position may be used instead of runway
update;
 Where reliance is placed on the use of radar to assist contingency
procedures, its performance has been shown to be adequate for that
purpose, and the requirement for a radar service is identified in the
AIP;
 RNAV operations must use FMS to control all lateral navigation
functions. For FMS limitations, refer to Section 1-01-60 (Limitations,
System: FMS) of AOM;
 The airplane RNAV system must display the following information to
the flight crew:
 The active (TO) waypoint and distance/bearing to this point;
 Ground speed or time to the active (TO) waypoint;
 For P-RNAV, automatic tuning of VOR and DME used for
position updating together with the capability to inhibit
individual NAVAIDs;
 RNAV
navigation information, that is sufficient to perform cross-
checks.
REVISION 40
AIRPLANE
OPERATIONS
MANUAL
system failures;Alternate
SUPPLEMENTARY
PROCEDURES
NAVIGATION
means of displaying
Page
1-02-80
Code
17 01