Embraer EMB145 - Page 1664

AIRPLANE
OPERATIONS
MANUAL
CREW
AWARENESS
REVISION 38
2-04-30
Page
43
Code
01
AOM-145/1114
STEEP APPROACH OPERATION
Some airplanes may be optionally equipped with Steep Approach
function. Steep approaches are approach operations performed with
glide slope angle equals to or above 4.5°. This kind of operation
implies to the airplane a vertical speed higher than the normal,
requiring means to change the range of the EGPWS Mode 1 envelope
in order to avoid nuisance messages.
The Steep Approach mode is selected by means of two pushbuttons
installed on the glareshield panel, one at each side. When either
pushbutton is pressed, an internally preset mode of the EGPWS
changes the references to sound the SINK RATE and PULL UP aural
warnings.
When the airplane is in flight and the flaps are selected to 45°, the
STEEP white light illuminates on the Steep Approach pushbutton
indicating that the Steep Approach mode is available. When either the
flaps are retracted to a position other than 45° or airplane lands, the
STEEP white light extinguishes indicating that the Steep Approach
mode is no longer available.
The pushbutton lower portion has two status lights, amber and green.
The green light indicates that the Steep Approach mode is engaged
and the amber light indicates a failure condition.
If the amber light turns on, it indicates that the Steep Approach mode
is failed and steep approach operations must not be performed. In this
situation, the Steep Approach mode is not engaged and the airplane
must land in an airport that does not require steep approach operation.
In flight, with the STEEP inscription illuminated, if the Steep Approach
pushbutton is pressed, the green light illuminates to indicate that the
Steep Approach mode is engaged. If the green light does not
illuminate, the Steep Approach mode is not engaged and the steep
approach operation must not be performed.
The Steep Approach mode is deselected pressing the pushbutton or
through automatic deselection. An automatic deselection of the Steep
Approach mode is performed when:
− Airplane is on the ground;
− Flaps are set to a position other than 45°.