AIRPLANE
OPERATIONS
MANUAL
POWERPLANT
JUNE 28, 2002
2-10-70
Page
3
Code
01
THRUST REVERSER INTERLOCK
The FADECs interface with the thrust reverser system of the
corresponding engine.
Each FADEC receives two pieces of information from the thrust
reverser system:
− Stowed: If all doors of the corresponding engine are stowed.
− Deployed: If all doors of the corresponding engine are deployed.
For flight operation there is also a flat between IDLE and
MAX REVERSE position. The FADEC enables reverse thrust
depending on the position of the reverser doors and on the position of
the engine thrust lever, and reduces the engine thrust to IDLE, if there
is an indication of an inadvertent thrust reverser deployment in flight,
which normally is not possible due to the Flight Idle electrical stop.
EICAS MESSAGES
TYPE MESSAGE MEANING
ENG1 (2) REV FAIL
-Thrust reverser doors
not stowed and in transit
with Thrust Levers set at
or above IDLE, or
-Thrust Levers set below
IDLE in flight.
CAUTION
ENG1 (2) REV DISAGREE
-At least one thrust
reverser door not fully
open, or
-Thrust reverser system
not isolated from
hydraulic system (Thrust
Lever set at or above
IDLE), or
-Door locking or position
switch signal failure with
Thrust Levers set at or
above IDLE (ground
only).
ADVISORY E1 (2) IDL STP FAIL
Idle stop has failed.
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