Embraer EMB145 - Page 376

SUPPLEMENTARY
PROCEDURES
HGS OPERATION
AIRPLANE
OPERATIONS
MANUAL
1-02-85
Page
8
Code
01 REVISION 39
AOM-145/1114
WINDSHEAR PREVENTION/RECOVERY
The HGS will display a “WDSHEAR” message when the
GPWS/EGPWS detects a windshear.
In the event of a windshear, the HGS will display a “WDSHEAR” on the
combiner and on the PFD. A voice message will be presented in case
of a red “WDSHEAR” indication on the PFD.
When the go around mode is selected after a windshear warning, the
primary mode is selected and a windshear guidance cue is provided.
TRAFFIC AND COLLISION AVOIDANCE
The HGS will display TCAS Resolution Advisories (RA) to alert the
crew to traffic conflicts. Preventive and Corrective Resolution
Advisories provided are similar to MFD indications.
Preventive Advisories do not require that action be taken by the crew
to alter the flight path of the airplane, but indicate an unsafe zone.
Corrective Advisories displayed on the HGS require a vertical evasive
maneuver.
Preventive and corrective resolution advisory use angled lines to guide
the fly path to box or preventive bracket to indicate the unsafe or no-fly
zone.
In this case, the lines out of the box bottom will flash until the flight path
is positioned within the safe zone.
Preventive RA procedure:
− Ensure the airplane flight path remains clear of unsafe zones.
Corrective RA procedure:
− Fly the airplane to box and outside of the unsafe zone indicated
by the lines off the fly-to box.
− Maintain action as required by TCAS RA.
NOTE: In case the operating Transponder fails, the “TCAS FAIL” flag
will not be displayed on the Combiner.