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May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 27 FLIGHT CONTROLS
UF94200
EFFECTIVITY Page 193
ALL
RUDDER CHANNEL COMPONENTS (AFT)
CENTERING SPRING RODS
IDENTIFICATION
FIN:
LOCATION
ZONE: 325
COMPONENT DESCRIPTION
These centering spring rods must be installed unloaded.
The centering spring rods maintain the servocontrol
input levers to a near neutral position, in case of
disconnection or leakage in the mechanical device.
TMUFCLX01-T07 LEVEL 3
EFFECTIVITY 27-20-00 Page 14
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 27 FLIGHT CONTROLS
UF94200
EFFECTIVITY Page 194
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TMUFCLX01-P07 LEVEL 3
RUDDER CHANNEL COMPONENTS (AFT) - CENTERING SPRING RODS
EFFECTIVITY 27-20-00 Page 15
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 27 FLIGHT CONTROLS
UF94200
EFFECTIVITY Page 195
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TMUFCLX01 LEVEL 3
EFFECTIVITY 27-20-00 Page 16
May 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 27 FLIGHT CONTROLS
UF94200
EFFECTIVITY Page 196
ALL
27 - FLIGHT CONTROLS
27-60-00 SPEED BRAKE AND GROUND SPOILER
DESCRIPTION AND OPERATION
CONTENTS
Speed Brake Function
Speed Brake Logic
Ground Spoiler Function
Ground Spoiler Logic
Self Examination
TMUFC1405 LEVEL 3
EFFECTIVITY 27-60-00 Page 1
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 27 FLIGHT CONTROLS
UF94200
EFFECTIVITY Page 197
ALL
SPEED BRAKE AND GROUND SPOILER DESCRIPTION AND OPERATION
SPEED BRAKE FUNCTION
The Speed Brake Function is commanded in the flight
phase following a pilot’s action on the speed brake
lever.
The surfaces ensuring this function are spoilers 2
thru 4.
When one surface is not available on one wing, the
symmetrical one, on the other wing, is inhibited.
The switching to alternate or direct laws does not
affect the Speed Brake Function.
The pitching moment associated to speed brake extension
or retraction is compensated by the pitch control laws.
PRIORITIES :
- The roll order has priority over the Speed
Brake Function.
When the sum of roll and speed brake commands,
relative to one surface, is greater than the
maximum possible deflection, the symmetrical
surface is retracted until the difference
between the two surfaces is equal to the roll
order.
- If the angle of attack protection is activated
with speed brakes extended, the speed brakes
are automatically retracted.
TMUFC1405-T01 LEVEL 3
EFFECTIVITY 27-60-00 Page 2
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 27 FLIGHT CONTROLS
UF94200
EFFECTIVITY Page 198
ALL
TMUFC1405-P01 LEVEL 3
SPEED BRAKE AND GROUND SPOILER DESCRIPTION AND OPERATION - SPEED BRAKE FUNCTION
EFFECTIVITY 27-60-00 Page 3
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 27 FLIGHT CONTROLS
UF94200
EFFECTIVITY Page 199
ALL
SPEED BRAKE AND GROUND SPOILER DESCRIPTION AND OPERATION
SPEED BRAKE LOGIC
Here is the speed brake function logic in detail.
TMUFC1405-T02 LEVEL 3
EFFECTIVITY 27-60-00 Page 4
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 27 FLIGHT CONTROLS
UF94200
EFFECTIVITY Page 200
ALL
TMUFC1405-T02 LEVEL 3
SPEED BRAKE AND GROUND SPOILER DESCRIPTION AND OPERATION - SPEED BRAKE LOGIC
EFFECTIVITY 27-60-00 Page 5
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 27 FLIGHT CONTROLS
UF94200
EFFECTIVITY Page 201
ALL
SPEED BRAKE AND GROUND SPOILER DESCRIPTION AND OPERATION
GROUND SPOILER FUNCTION
When the logic conditions, which determine the lift
dumper extension, are fulfilled, a deflection order
is sent to spoilers 1 to 5, to 10º or 50º extension
depending on the state of both main landing gear legs
(compressed or not).
Ground spoilers are ARMED when the speed brake control
lever is pulled up, on manual mode.
Moreover, a Pitch Precommand at Ground Spoiler
extension/retraction avoids induced pitch effects (in
normal or A/P mode).
The Ground Spoiler Function is automatic.
　
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