Embraer EMB145 Operation Manual page 89

GENERAL
VERSION 20.5
The EICAS 20.5 features implemented in the software are described
below:
Air conditioning system
"BLEED 1(2) VLV CLSD" message logic improved in order to avoid

spurious alarms.
Fuel System
"FUEL VENT OPEN" and "FUEL XFER INOP" messages logic

improved in order to avoid spurious alarms (only applicable to
EMB-145 XR model).
Powerplant System
"ENG1(2) REV DISAGREE" message logic improved in order to

avoid spurious alarms.
Pressurization System
"HI ALT LDG-T/O" message changed from caution to advisory

(only applicable to airplanes properly equipped for High
Altitude Operation).
Navigation System
The Radio Altimeter indication was modified in order to reduce the

discrepancy between the current altitude of the airplane and the
PFD Radio Altitude indication.
Autopilot System
Pitch Wheel Command Integrator - Correction to avoid poor

Autopilot response when using the Pitch Wheel while coupled to
the copilot's Flight Director, which may cause the Autopilot logic to
reset an integrator, resulting in sluggish Autopilot response.
Pitch Axes - Correction to avoid Autopilot nuisance disconnection

due to the Pitch Primary Monitor during the Coupled Autopilot Go-
Around test (only applicable to EMB-145 XR model).
General Changes
New AZ-950 MADC Maintenance Page on PFD.

Page
8
1-00-30
AIRPLANE
OPERATIONS
MANUAL
Code
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REVISION 41