(4) Connect the ground air-supply unit to the aircraft LP connector 4022HM.
4. Procedure
_________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
Subtask 12-33-21-618-060
A. Pre-conditioning through the LP Ground Connection
(1)
Start the ground air-supply unit and make sure that:
-
the airflow is between 54 kg.min (119.0495 lb.min) and 78 kg.min (171.9605 lb.min),
-
the supplied air pressure is not more than 40 mbar (0.58 psi),
(2)
Set the necessary output air temperature on the ground air-supply unit.
NOTE : Make sure that the supplied air temperature does not go above
____
70 deg.C (158.00 deg.F).
**ON A/C 301-399,
Subtask 12-33-21-618-060-A
A. Pre-conditioning through the LP Ground Connection
(1)
Start the ground air-supply unit and make sure that:
-
the airflow is between 63 kg.min (138.8911 lb.min) and 96 kg.min (211.6437 lb.min),
-
the supplied air pressure is not more than 40 mbar (0.58 psi),
(2)
Set the necessary output air temperature on the ground air-supply unit.
NOTE : Make sure that the supplied air temperature does not go above
____
70 deg.C (158.00 deg.F).
R **ON A/C ALL
Subtask 12-33-21-618-061
B. When the pre-conditioning is no longer necessary, stop the ground
air-supply unit.
5. Close-up
________ Subtask 12-33-21-410-056
A. Close Access
(1)
Disconnect and remove the ground air-supply unit from the aircraft LP connector 4022HM.
(2)
Close the access door 191CB.
(3)
Close the avionics-bay access door 811.
(4)
Remove the warning notice(s).
(5)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
GROUNDING POINTS - DESCRIPTION AND OPERATION
____________________________________________
1. General
_______
You must electrically ground the aircraft:
-
when you refuel/defuel it,
-
when you do maintenance,
-
when in bad weather conditions.
In other conditions, the aircraft is electrostatically discharged through
the tires.
Grounding points are:
- on the nose landing gear,
- on the main landing gear,
- on the wing upper surface,
- on the engine air intakes.
AIRCRAFT GROUNDING - MAINTENANCE PRACTICES
__________________________________________
R **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,
TASK 12-34-24-869-001
Aircraft Grounding for the Refuel/Defuel Operations
WARNING : DO NOT WEAR A HEADSET OR TOUCH CABLES/LINES CONNECTED TO THE
_______ AIRCRAFT, DURING BAD WEATHER CONDITIONS. LIGHTNING IS DANGEROUS.
1. Reason for the Job
__________________ To electrostatically balance the aircraft for the refuel/defuel operations. NOTE : Bonding is essential, grounding is recommended.
____
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific bonding cable
No specific ground cable
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-34-24-991-001 Fig. 201
12-34-24-991-002 Fig. 202
12-34-24-991-003 Fig. 203
3. Job Set-up
__________
Subtask 12-34-24-210-050
A. Safety Precautions
(1) Make sure that the fuel tanker is grounded.
4. Procedure
_________
Subtask 12-34-24-869-050
A. Connection of the Ground Cables
WARNING : ALWAYS CONNECT THE GROUND CABLE TO THE PARKING GROUND POINT
_______ BEFORE YOU CONNECT IT TO THE AIRCRAFT. DO NOT ATTACH THE CABLE TO THE AIRCRAFT FIRST (THERE IS A RISK OF ELECTRIC SHOCK).
NOTE : For the satisfactory removal of an electrical charge from the
____
aircraft:
-
the aircraft ground cable must have a section of 22 mm2 (0.0033 in2) or more.
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