POWERPLANT
AIRPLANE
O
PERATIONS
MANUAL
2-10-50
Page
4
Code
01
REVISION 41
Copyright © by Embraer. Refer to cover page for details.
T/O-1 is selected if there is weight on wheels, the TLA is at 50°
or less and the T/O thrust-rating button is pushed. This mode is
also selected if both engines do not agree on the thrust mode or
when the thrust mode of the remote engine cannot be
determined. Besides, this mode is selected when the T/O thrust-
rating button is pushed and the pressure altitude is greater than
1700 ft above takeoff. The T/O-1 mode is automatically selected
whenever the TLA is advanced above the THRUST SET
position regardless of the mode previously selected. ATTCS is
not active in this mode.
− A1P and A1/3 engines:
This is the One Engine Inoperative (OEI) mode for the normal,
all engines operating, ALT T/O-1 mode. In addition to being
selected by an ATTCS trigger, it may also be selected from
ALT T/O-1 mode, at or below 1700 ft above takeoff pressure
altitude, by pushing the T/O thrust-rating button. It is not a
normal pilot selectable takeoff mode.
− A1E engine:
This is the One Engine Inoperative (OEI) mode for the normal,
all engines operating, ALT T/O-1 mode. The FADECs will select
T/O-1 mode if the T/O switch is pressed and the current mode is
ALT T/O-1 during takeoff phase, if the ATTCS is triggered and
the current mode is ALT T/O-1 or if the thrust lever is moved
beyond THRUST SET position and the current mode is
ALT T/O-1.
TAKEOFF (T/O)
− A1P and A1/3 engines:
This mode is the maximum, all engines operating takeoff mode.
For engine durability and economy of operation, this mode
should only be selected when ALT T/O-1 is not authorized.
ATTCS is active in this mode, so that ATTCS triggers upon
detection of an engine failure, commanding a thrust increase to
T/O RSV mode. The T/O mode is automatically selected at
FADEC power up, and at the initialization of the Takeoff Data
Setting procedure. T/O is also automatically selected in flight
below or descending through 15000 ft provided
the landing gear
is down and locked. T/O is selected if there is weight on wheels,
the TLA is at 50° or less and the T/O thrust-rating button is
pushed. This mode is also selected when the T/O thrust-rating
button is pushed and the pressure altitude is greater than 1700 ft
above takeoff altitude.
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