Systems Guide
A318/A319/A320/A321
Professional
SYSTEMS
Systems guide
Vol
4
04-03-39
11 July 2018
OVERHEAD PANEL CONTROLS
There are two FLT CTL panels on the overhead panel. When the corresponding system is ON and without
fault the pb will be dark. When clicked OFF will show and the corresponding computer will be deactivated.
When clicked again the computer will reset and restart. The two panels are mixed, so each crew member
will be able to control at least one ELAC, SEC and FAC.
ECAM F/CTL & WHEEL PAGE
The ECAM F/CTL page provides full feedback on all control surfaces. Please note the spoiler/speed brakes
indication is also shown on the ECAM WHEEL page.
PROTECTIONS
The normal law provides complete flight envelope protection:
• Load Factor limitation
o +2.5 g <-> -1.0 g flaps retracted
o +2.0 <-> 0.0 g flaps extended
• Pitch Attitude protection
o 30° nose up in configuration 0 to 3
o 25° nose up in configuration full
o 15° nose down
• Bank Angle protection
o 33° bank angle
o When the sidestick is kept full right or left the aircraft will bank to 67°, when sidestick is
released it bank angle will go back to 30°
• High Angle of Attack protection
o When angle of attack exceeds α protection the High Angle of Attach Protection kicks in.
It will allow AoA to go to α max but not beyond. This protects against stall and
windshear. A/P will disconnect in this mode.
• High speed protection
o When the speed exceeds safe limits, the engines will throttle down and when needed,
speed brakes will be deployed.