Danny's Notes Flashcards
Which flying controls have a mechanical backup?
Rudder and THS
What are the 3 principal flight modes?
Ground, Flight and Flare
What protection is available in Ground mode?
None
How is Flight mode activated?
Positive pitch attitude and Weight Off Wheels signal
What are the 3 flight control laws?
Normal, alternate and direct
How do you maintain sidestick priority?
To latch the priority condition it is recommended that the takeover P/B be pressed for more than 40 seconds.
Which computers are utilised from a pitch and roll input from the sidestick?
ELAC and SEC
How many hydraulic motors does the THS have?
3 which can operate independently
How is mechanical control of the THS prioritised?
Override mechanism
Which hydraulic systems does the THS operate with?
Green and Yellow
If both ELACs were to fail, what would take control?
SECs but in alternate law
Elevator servos operate in which modes?
Active, Damping and re-centring
When does re-centring mode activate?
When there is no demand but hydraulic pressure
Which ELAC is in control normally for Aileron control?
ELAC 1
How is roll controlled with total electrical failure?
Mechanical rudder
What happens to the rudder movement output when Slats are deployed with dual FAC failure?
Rudder moves to low speed
When will the rudder pedals move?
Manual trim
During a rudder servo jamming what mode would be activated?
Damping mode internally
Which spoilers act as speed brakes in flight?
2,3 and 4
Which spoilers carry out roll control?
4 and 5
During a roll command exceedance what happens to the opposite wing?
spoilers retract
How is flare law activated?
Rad Alt input
Vertical accelerometers transmit the vertical acceleration of the aircraft to the ELACs and SECs. Where are they fitted on the aircraft?
Installed in the FWD cargo compartment
What is the purpose of Flap CSU?
Converts mechanical inputs into electrical signals
What computer controls the Flaps and Slats?
SFCC
What function does the APPU provide?
Asymmetry feedback
If one SFCC is faulty how does the aircraft use comparison signals for Asymmetry lockout?
The faulty SFCC automatically sends a Asymmetry signal making the serviceable SFCC master for Asymmetry lockout
Slat 1 has four tracks, how many are driven?
2 are driven T2 and T3
How can a Wing Tip Brake (WTB) be reset?
On the ground only via the MCDU
Why is the position of the Flaps sent to the CIDS director?
For cabin lighting settings
To prevent FOD ingress how are the Pack ram inlets controlled during take off and landing?
The BSCU sends a signal to the Pack controllers to close.
When does Alpha lock keep the Slats out?
During high angles of attack
What controls the landing gear retraction / extension sequence?
LGCIU
The Hydraulic safety valve shuts off the hydraulic pressure to the L/G system, when the airspeed is greater than 260 ±5 kts. Where is this speed reference taken from?
ADIRU 1 & 3
Which hydraulic systems control braking?
Normal Green - Alternative Yellow
Which hydraulic system would you operate to top up the parking brake accumulator?
Yellow
When will the braking DECEL light be illuminated?
The DECEL light comes on green when actual aircraft deceleration is 80 % of the selected rate (LO and MED modes) or 0.27g (MAX mode).
What is the maximum Nose Wheel Steering (NWS) angle with the rudder pedals?
6 degrees
What is the maximum Nose Wheel Steering (NWS) angle with the NWS tiller?
75 degrees
Which LRU gives secondary gear information?
LGCIU 1
How is the NLG returned to the centre position after take off?
2 centering cams, the lower cam is part of the plunger tube and the upper cam is part of the sliding tube. When the shock absorber is fully extended the pressure of the nitrogen causes the cams to engage. The wheels then return automatically to the centre position.
What conditions must be met in order to arm the auto braking system?
The autobrake system is armed if one of the three modes P/B (LO, MED or MAX) is pressed.
Green pressure available
BSCU electrically powered
no failure in the normal braking system
