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flight.
FLIGHT CONTROLS MENU Abnormal operation (A) 37/39
In case of total loss of normal control or hydraulic supply,
the elevators are automatically set to and maintained in the
neutral position.
FLIGHT CONTROLS MENU Abnormal operation (A) 38/39
Provided the appropriate
Hydraulic systems are available:
- Mechanical control of the THS
is always available via the pitch
trim wheels.
- For the rudder, mechanical
control via the rudder pedals is
always available even in case of
complete failure of FAC computers.
This is called the mechanical
backup.
FLIGHT CONTROLS MENU Abnormal operation (A) 39/39
SUMMARY:
• General rules:
If a computer fails, the second computer of the same type takes over.
Each primary flight control surface is supplied by at least 2 different hydraulic sources. An
independent actuator is associated with each hydraulic source for each surface.
Each actuator is controlled by a different computer. For a surface, one actuator is always in active
mode while the other(s) are in damping mode.
• Ailerons/Elevators/THS/Rudder:
If both ELAC fail, SEC 2 controls the elevators and the THS. The ailerons are in damping mode. If
SEC 2 fails, it will be replaced by SEC 1.
In case of one elevator failure, the deflection of the remaining one is limited to avoid excessive
loads on the tail and rear fuselage.
Mechanical backup is always available using the rudder pedals and pitch trim wheels, provided the
appropriate hydraulic systems are available.
NEXT
MMoodduullee ccoommpplleetteedd
FLIGHT CONTROLS MENU Abnormal operation (A) 40/39
LLIISSTTOOFFSSUUBBJJEECCTTSS
EXIT
AUDIO GLOSSARY FCOM
RETURN
EELLAACC11FFAAUULLTT
CCOOMMPPUUTTEERRFFAAIILLUURREESS
FLIGHT CONTROLS MENU Abnormal operation (B) 1/53
FLIGHT CONTROLS MENU Abnormal operation (B) 2/53
LLeett’’ss sseeee hhoow tthhee ssppooiilleerrss aarree ccoonnttrroolllleedd bbyy tthhee SEC..
FLIGHT CONTROLS MENU Abnormal operation (B) 3/53
SEC 1
SEC 2
SEC 3
TThhee ssppooiilleerr ccoonnttrrooll iiss sshhaarreedd bbyy tthhee 33 SEC..
FLIGHT CONTROLS MENU Abnormal operation (B) 4/53
We will now see a spoiler fault.
Assume we are in descent, speed brake extended and no
previous fault has occurred.
Reettrraacctt tthhee ssppeeeedd bbrraakkee ttoo aaccttiivvaattee tthhee ffaaiilluurree..
FLIGHT CONTROLS MENU Abnormal operation (B) 5/53
We will now see a spoiler fault.
Assume we are in descent, speed brake extended and no
previous fault has occurred.
Noo,, cclliicckk oonn tthhee ssppeeeedd bbrraakkee lleevveerr..
FLIGHT CONTROLS MENU Abnormal operation (B) 6/53
We will now see a spoiler fault.
Assume we are in descent, speed brake extended and no
previous fault has occurred.
Noo,, cclliicckk oonn tthhee ssppeeeedd bbrraakkee lleevveerr..
FLIGHT CONTROLS MENU Abnormal operation (B) 7/53
FLIGHT CONTROLS MENU Abnormal operation (B) 8/53
You hear the single chime and see
the Master Caution light.
No, to extinguish the Master Caution
light, push the Master Caution pb sw.
FLIGHT CONTROLS MENU Abnormal operation (B) 9/53
You hear the single chime and see
the Master Caution light.
No, to extinguish the Master Caution
light, push the Master Caution pb sw.
FLIGHT CONTROLS MENU Abnormal operation (B) 10/53
FLIGHT CONTROLS MENU
Abnormal operation (B) 11/53
Onn tthhee E//WD,, rreeaadd tthhee ttiittllee ooff tthhee ffaaiilluurree..
FLIGHT CONTROLS MENU Abnormal operation (B) 12/53
Observe left spoiler 3 indication in amber on
the ECAM F/CTL page.
FLIGHT CONTROLS MENU Abnormal operation (B) 13/53
These indications mean that left spoiler 3 has
failed in the extended position.
The SEC, which controls this spoiler and has
detected the fault, will automatically retract it and
inhibit its symmetric one on the other wing, right
spoiler 3, also shown in amber.
FLIGHT CONTROLS MENU Abnormal operation (B) 14/53
You can now observe on the ECAM F/CTL page
that spoilers 3 on both wings are retracted and
shown in amber.
Note that when a spoiler has failed on one wing,
the symmetric one is automatically inhibited.
FLIGHT CONTROLS MENU Abnormal operation (B) 15/53
As a general rule, spoilers are automatically
retracted when faulty or not electrically controlled.
FLIGHT CONTROLS MENU Abnormal operation (B) 16/53
As no action is required in the procedure, after
review and confirmation from the PF...
Clleeaarr FF//CTTLL..
FLIGHT CONTROLS MENU Abnormal operation (B) 17/53
Noo,, pprreessss eeiitthheerr CLLR kkeeyy..
　
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