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FCOM 19 AUG 10
GENERAL
Applicable to:
MSN,
Each wing has the following lift augmentation devices :
‐ Two flap surfaces.
‐ Five slat surfaces.
These surfaces are electrically controlled and hydraulically operated.
The pilot extends slats and flaps by moving the FLAPS lever on the center pedestal.
It has five positions.
GENERAL
Applicable to: ,
, MSN,,
Each wing has the following lift augmentation devices :
‐ Two double-slotted flap surfaces.
‐ Five slat surfaces.
These surfaces are electrically controlled and hydraulically operated.
The pilot extends slats and flaps by moving the FLAPS lever on the center pedestal.
It has five positions.
MAIN COMPONENTS
Applicable to:
MSN,
The slat and flap systems are similar, comprising :
‐ Two slat flap control computers (SFCCs), each containing one slat channel and one flap channel.
‐ A power control unit (PCU) consisting of two independent hydraulic motors coupled by a
differential gearbox.
The motors use green and blue hydraulic power for the slats and yellow and green power for the
flaps.
Pressure-off brakes (POBs) lock the transmission when the slat or flap surfaces have reached the
selected position or if hydraulic power fails.
‐ Five slat surfaces and two flap surfaces per wing.
‐ An assymetry position pick-off unit (APPU) that measures the assymetry between the left and right
wings.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FLIGHT CONTROLS
FLAPS AND SLATS - DESCRIPTION
A318/A319/A320/A321 FLEET DSC-27-30-10 P 2/8
FCOM 19 AUG 10
A flap disconnect detection system, which detects attachment failure ‐ and inhibits flap operation in
order to prevent further damage. A sensor detects the failure by measuring excessive differential
movement between the inner and the outer flaps.
‐ Wingtip brakes (WTBs), activated in case of assymetry, mechanism overspeed, symmetrical
runaway, or uncommanded movement of the surfaces. They cannot be released in flight.
They use blue and green hydraulic power for the slats and for the right wing flaps, and blue and
yellow hydraulic power for the left wing flaps.
‐ Feedback position pick-off units (FPPUs) that feed back position information to the SFCCs.
‐ An instrumentation position pick-off unit (IPPU) that sends position data to the ECAM.
Note: If the flap wingtip brakes are on, the pilot can still operate the slats, and if the slat wingtip
brakes are on, he can still operate the flaps.
If one SFCC is inoperative, slats and flaps both operate at half speed.
If one hydraulic system is inoperative, the corresponding surfaces (slats or flaps) operate at
half speed.
MAIN COMPONENTS
Applicable to: ,
, MSN,,
The slat and flap systems are similar, comprising :
‐ Two slat flap control computers (SFCCs), each containing one slat channel and one flap channel.
‐ A power control unit (PCU) consisting of two independent hydraulic motors coupled by a
differential gearbox.
The motors use green and blue hydraulic power for the slats and yellow and green power for the
flaps.
Pressure-off brakes (POBs) lock the transmission when the slat or flap surfaces have reached the
selected position or if hydraulic power fails.
‐ Five slat surfaces and two double-slotted flap surfaces per wing.
‐ An assymetry position pick-off unit (APPU) that measures the assymetry between the left and right
wings.
‐ A flap disconnect detection system, which detects attachment failure and inhibits flap operation in
order to prevent further damage. A sensor detects the failure by measuring excessive differential
movement between the inner and the outer flaps.
‐ Wingtip brakes (WTBs), activated in case of assymetry, mechanism overspeed, symmetrical
runaway, or uncommanded movement of the surfaces. They cannot be released in flight.
They use blue and green hydraulic power for the slats and for the right wing flaps, and blue and
yellow hydraulic power for the left wing flaps.
‐ Feedback position pick-off units (FPPUs) that feed back position information to the SFCCs.
‐ An instrumentation position pick-off unit (IPPU) that sends position data to the ECAM.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FLIGHT CONTROLS
FLAPS AND SLATS - DESCRIPTION
A318/A319/A320/A321 FLEET DSC-27-30-10 P 3/8
FCOM 19 AUG 10
Note: If the flap wingtip brakes are on, the pilot can still operate the slats, and if the slat wingtip
brakes are on, he can still operate the flaps.
If one SFCC is inoperative, slats and flaps both operate at half speed.
If one hydraulic system is inoperative, the corresponding surfaces (slats or flaps) operate at
　
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