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Now, we have to install the towbar.
CAUTION: MAKE SURE THAT THE TOW BAR HAS:
- A DAMPING SYSTEM
- A CALIBRATED SHEAR PIN
- TWO CALIBRATED TURN SHEAR PINS.
THIS IS TO PREVENT HIGH LOADS CAUSING DAMAGE
TO THE LANDING GEAR.
Refer to your Aircraft Maintenance Manual for the
calibration of these pins.
On the nose landing gear, install the towbar on the
tow fitting and connect the towbar to the tractor.
CAUTION: PUT THE PARKING BRK CONTROL SWITCH IN THE OFF
POSITION BEFORE YOU TOW OR PUSH BACK THE
AIRCRAFT.
THIS IS TO PREVENT HIGH LOADS CAUSING DAMAGE
TO THE NOSE LANDING GEAR.
On the Yellow brake-pressure triple-indicator, the
brakes pressure pointers go down.
TMUTOWA01-T01 LEVEL 2
EFFECTIVITY 09-10-00 Page 3
Sep 30/98
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 09 TOWING
UF94200
EFFECTIVITY Page 3
ALL
TOWING WITH THE NOSE GEAR FROM THE FRONT
TOWING WITH THE NOSE GEAR FROM THE FRONT (CONT’D)
In the cockpit, set the lighting system:
- Set the EXTerior LighT NAVigation and LOGO
switch to ON.
- At night, set the INTerior LighT DOME switch
to BRighT and if the anti-collision lighting
is necessary for the local airport regulations
or the airline procedures, set the EXTerior
LighT BEACON switch to ON.
On the VHF system:
- In order to communicate with the control tower
during towing operations, release out the VHF
pushbutton switch and select the control tower
frequency on the Radio Management Panel.
- In order to communicate with the ground
mechanics, on the Audio Control Panel, set the
interphone radio switch to INTerphone position
and release out the interphone reception
pushbutton.
For safety reasons, a distance of 3 meters (10 ft)
must be kept clear around the nose wheels, tow bar and
tractor when the aircraft moves.
Towing speed limitation depends on the position of the
passenger/crew and cargo doors. For these speed
limitations refer to your Aircraft Maintenance Manual.
The maximum permitted steering angle on each side of
the aircraft centerline is 95 degrees. When you use
the front fittings to push the aircraft rearwards with
engine at idle this angle is limited to 40 degrees.
At this point, be sure that all WARNINGS and CAUTIONS
of your Aircraft Maintenance Manual procedure and
previous precautions are applied.
Then, the aircraft can be towed slowly and smoothly.
Two other persons have to monitor the wing tips during
the towing operation and one person is required in the
cockpit in order to operate the brakes.
When you complete the towing operation, make sure that
the nose wheels are aligned with the aircraft
centerline.
Inform the cockpit to apply the parking brake, and
check that the PARKING BRAKE light is ON on the nose
wheel steering deactivation electrical-box.
Put the wheel chocks in position.
Disconnect the tow bar from the nose gear fittings.
On the nose wheel steering deactivation
electrical-box, remove the safety pin and set the
ground-towing control lever to the normal position.
At the same time, in the cockpit, on the ECAM MEMO
display the message "N.WHEEL STEERG DISC" disappears.
On the lighting system:
- Reset the EXTerior LighT BEACON and NAVigation
& LOGO switches to OFF.
- Reset the INTerior LighT DOME switch to OFF.
On the communication system:
- Cut the cockpit/control tower VHF link by
pressing in the VHF pushbutton on the Radio
Management Panel.
- Reset the Interphone radio switch to the
neutral position.
Depressurize the yellow hydraulic system, do the EIS
Stop Procedure and De-energize the Aircraft Electrical
Circuits.
TMUTOWA01-T01 LEVEL 2
EFFECTIVITY 09-10-00 Page 4
Sep 30/98
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 09 TOWING
UF94200
EFFECTIVITY Page 4
ALL
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