Systems Guide

A318/A319/A320/A321
Professional
SYSTEMS
Systems guide
Vol
4
04-03-53
11 July 2018
Both front windshields have individual windshield wipers controlled by three position switches on the
overhead panel. Activating them on a dry
windshield might cause damage to the
windshield. Using the wipers at airspeed over 240
knots is not advised and not really needed.
LANDING GEAR AND BRAKES
GENERAL
The landing gear consists of a steerable nose gear with two wheels and two main landing gear with two
wheels. The nose gear retracts forward and does not have any brakes. The main gear retracts inboard and
is equipped with carbon disk brakes. An auto brake system and anti-skid systems are available to assist
the crew in halting the aircraft under less favorable conditions. An interlock system prevents gear
retraction when the aircraft is on the ground. In case of total hydraulic failure, the gear can be extended
with a manual crank handle. On retraction the main gear is automatically braked using the normal brakes.
The nose gear is braked with a friction band on retraction.
NOSEWHEEL STEERING
The nosewheel can be steered using the rudder pedals and the steering handwheels (not simulated).
Nosewheel steering is available when:
• The A/SKID & N/W STRG controls are activated
• At least one engine is running
• Aircraft speed is under 130 knots
• Aircraft is on ground
• Green hydraulic pressure is available