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one SFCC inoperative, the second one is still able to
apply the Wing Tip Brake. Flap locking by the WTB does
not prevent slat operation and vice versa. Once applied
the WTB can be reset on ground only via the Centralized
Fault Display System.
FLAP SENSORS
A flap disconnect detection system inhibits further
flap operation when a flap attachment failure is
detected.
It consists of two proximity sensors on each
interconnecting strut (on each wing), which measure
differential movement between inner and outer flaps.
An electrically controlled, mechanically actuated
sensor unit including two sensors is installed on
the flap interconnecting strut.
If a flap disconnect is detected, the flap PCU is
de-energized and the Pressure Off Brakes are
applied in order to stop the transmission.
Further flap operation is inhibited (WTBs are not
applied).
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SELF EXAMINATION
What are the conseqences of one flap PCU motor
inoperative ?
A - No consequence. The movement of the flap
surfaces is not affected.
B - The system is locked and flap movement
is no longer possible.
C - The flap surfaces extend (retract) at
half speed.
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27 - FLIGHT CONTROLS
27-00-00 SLATS AND FLAPS CONTROL AND
POSITION INDICATION
CONTENTS:
Slats / Flaps Control Lever
Slats / Flaps Extension On Ground
Slats / Flaps Retraction On Ground
Slats / Flaps Extension In Flight
Slats / Flaps Retraction In Flight
Automatic Retraction In Flight
Slats Alpha-Lock Protection
Self Examination
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SLATS AND FLAPS CONTROL AND POSITION INDICATION
SLATS / FLAPS CONTROL LEVER
The Slats / Flaps control lever is located in the
cockpit on the center pedestal.
It is connected to the Command Sensor Unit which
transforms the mechanical demand into electrical
signals for the Slat / Flap Control Computers (SFCCs).
The lever selects simultaneous operation of the slats
and flaps and the collar must be lifted before
selection of any position.
The relationship between the lever position, flight
phase and slat flap angles is shown here.
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SLATS AND FLAPS CONTROL AND POSITION INDICATION - CONTROL LEVER
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SLATS AND FLAPS CONTROL AND POSITION INDICATION
SLATS / FLAPS EXTENSION ON GROUND
The white points on the ECAM display are the selectable
Slat / Flap positions. These white points are not
displayed in clean configuration.
A word "FLAP" appears on the ECAM display when the
slats and flaps are not fully retracted.
When a new position is selected, the position number,
the word "FLAP" and the selected position triangles
are displayed in cyan.
When the selected position is reached, the position
number, and triangles become green. The word "FLAP"
becomes white. A green line is added to the display.
When the flaps are set to full, the word FULL replaces
the flap position number.
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SLATS AND FLAPS CONTROL AND POSITION INDICATION - EXTENSION ON GROUND
TMUFC1602-P02 LEVEL 1
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SLATS AND FLAPS CONTROL AND POSITION INDICATION
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