FLIGHT CONTROLS
AIRPLANE
OPERATIONS
MANUAL
2-13-20
Page
8
Code
01
JUNE 29, 2001
EICAS MESSAGES
TYPE MESSAGE MEANING
RUDDER SYS 1 INOP Rudder System 1 is
inoperative. Message is
presented under the
following conditions:
− Below 135 KIAS.
− Above 135 KIAS if
airspeed of both ADC’s is
invalid.
RUDDER SYS 2 INOP Rudder System 2 is inop-
erative.
RUDDER SYS 1–2 INOP Both Rudder Systems are
inoperative.
CAUTION RUDDER OVERBOOST Both rudder systems
hydraulic actuators are
pressurized above 135 KIAS.
RUD HDOV PROTFAIL
− Disagreement between
both FADECs of a same
engine.
− Rudder position micro-
switches indicate rudder
to right and left simul-
taneously.
RUD STOP DISAGREE (*) The rudder’s movable stop
presents disagreement: 15°
in flight or 10° on ground.
(*) Applicable to airplanes operating under JAA certification and not
equipped with rudder movable stops indication light.
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