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OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
ICE AND RAIN PROTECTION
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A318/A319/A320/A321 FLEET PRO-SUP-30 P 4/4
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
INDICATING / RECORDING SYSTEMS
A318/A319/A320/A321 FLEET PRO-SUP-31 P 1/2
FCOM 19 AUG 10
USE OF FLIGHT PATH VECTOR
Applicable to: ALL
The flight path vector (FPV) indicates performance and does not direct or command. Because there
is always a slight lag between an attitude change and the change in flight path that results from it,
when the pilot uses the FPV he should make an attitude change first, then use the FPV to check the
resulting flight path.
Vertically the FPV indicates the aircraft’s flight path angle.
The FPV is particularly useful when the aircraft is doing visual circuits. For example, when the aircraft
is flying downwind the pilot simply adjusts the aircraft attitude to put the FPV symbol on the horizon.
This establishes the aircraft in level flight. On the final approach, the pilot puts the FPV three degrees
below the horizon to establish the aircraft at a normal angle of descent. If this results in the aircraft
going below the chosen approach path (undershooting the touchdown point), the pilot can reduce
the angle of descent by raising the FPV. As soon as the aircraft regains the correct descent path, he
should bring the FPV back to -3 °.
Laterally, the FPV indicates the aircraft’s track and its drift angle. It has the same displacement as
the drift diamond on the heading scale and thus appears directly above it. It shows on the PFD the
drift the aircraft is experiencing.
The pilot must take care when making a go-around with the FPV selected. There is inevitably some
lag between the pilot’s raising the nose to commence the go-around and the aircraft’s responding by
changing its trajectory. For the same reason the pilot does not use the FPV on takeoff: the primary
parameter for rotation, either on takeoff or on go-around, is attitude.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
INDICATING / RECORDING SYSTEMS
A318/A319/A320/A321 FLEET PRO-SUP-31 P 2/2
FCOM 19 AUG 10
The TRK-FPA Flight Director is particularly useful for guiding the aircraft during non-precision
approaches, although it can also be used at other times. When using this mode of the FD, the pilot
places the FPV symbol in the center of the flight path director (FPD) symbol. This is similar to using
the FD in HDG-V/S, when the pilot puts the center of the fixed aircraft symbol at the center of the
crossed bars of the FD. If the FCU is set on the correct track and flight path angle, and if the FPV
and the FPD are aligned, they will guide the aircraft along a trajectory that is stabilized with respect
to the ground, whereas when the pilot is using HDG-V/S the trajectory is stabilized with respect to
the air. However, if the aircraft is disturbed from this ideal trajectory, merely following the FPD will
result in its following a trajectory that is parallel to the intended trajectory. Thus, when the aircraft is
disturbed from the original trajectory, the pilot must adjust either its track or its flight path angle or
both in order to obtain guidance back to the original trajectory. Likewise, when the pilot uses the FPA
to create a synthetic glide path, it will be positioned correctly only if it commences at the right point in
space.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
LANDING GEAR
A318/A319/A320/A321 FLEET PRO-SUP-32 P 1/6
FCOM 19 AUG 10
BSCU RESET
Applicable to: ALL
A reset of the BSCU is only authorized:
‐ On ground for:
WHEEL N.W. STEER FAULT or WHEEL N/W STRG FAULT in order to go back to the gate for
troubleshooting. Taxi with care, at a taxi speed of10 kt
BRAKES SYS 1(2) FAULT or BRAKES BSCU CH 1(2) FAULT.
The BSCU reset should be performed on ground with aircraft stopped and parking brake applied,
by setting the A/SKID&N/W STRG selector to OFF then ON.
After any BSCU reset on ground, check the braking efficiency of the normal braking system, as
soon as the aircraft starts moving again (the aircraft must slow down when pressing the brake
pedals).
Note: If a BRAKES SYS 1(2) FAULT or BRAKES BSCU CH 1(2) FAULT cannot be cleared by
using the A/SKID&N/W STRG selector, a further reset may be attempted by using the
BSCU circuit breakers to clear the fault.
‐ In flight for:
BRAKES SYS 1(2) FAULT or BRAKES BSCU CH 1(2) FAULT
The BSCU reset must be performed with landing gear retracted, by setting the A/SKID&N/W
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