Systems Guide

A318/A319/A320/A321
Professional
SYSTEMS
Systems guide
Vol
4
04-03-22
11 July 2018
DISENGAGEMENT CONDITIONS
• Engagement of other vertical mode
o Manually by pulling altitude selection knob or performing a go around
o Automatically by reaching FCU altitude or G/S* engagement
GUIDANCE
FMGS pitch mode will guide the aircraft to the target V/S (FPA). A/THR mode is SPD or MACH.
V/S-FPA guidance has priority over speed guidance and when reaching the limit of the flight envelope will
change to OPEN mode.
COMMON MODES
COMMON modes are combinations of vertical and lateral modes.
COMMON MODE
VERTICAL
LATERAL
TAKE OFF
Mode: Pitch Take off
FMA: SRS
Mode: Runway LOC or Runway Track
FMA: RWY or RWY TRK
ILS APPROACH
Mode: G/S* or G/S
FMA: LAND or FLARE or ROLL OUT
Mode: LOC* or LOC
FMA: LAND or FLARE or ROLL OUT
NON ILS APPROACH
Mode: Final Descent
FMA: FINAL
Mode: Nav
FMA: APP NAV
GO AROUND
Mode: Pitch Go Around
FMA: SRS
Mode: Go Around track
FMA: GA TRACK
TAKE OFF: SRS
This mode is available during takeoff and the first 5 seconds of flight. In SRS mode the aircraft will follow
pitch guidance at speeds defines by the speed reference guidance law.
ENGAGEMENT CONDITIONS
• V
2
is inserted in MCDU
• Slats are extended
DISENGAGEMENT CONDITIONS
• Manually by engaging any other vertical mode
• Automatically at acceleration altitude
GUIDANCE
• The aircraft will keep V
2
+ 10 knots
• An attitude protection will prevent a too high nose up during takeoff
• Flight path angle of minimum climb rate of 120 ft/min
TAKE OFF: RUNWAY