4. Procedure
_________
R **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,
 Subtask 32-41-00-210-058
 A. Check of the Pressure
 WARNING : USE ONLY DRY NITROGEN OR OTHER INERT GASES TO INFLATE THE TIRES
_______ ON THE MAIN GEAR WHEELS. THE OXYGEN IN THE GAS USED TO INFLATE THESE TIRES MUST NOT BE MORE THAN 5% (VOLUME). IF THE AIRCRAFT IS FAR FROM ITS BASE AND NO DRY NITROGEN IS AVAILABLE, YOU CAN USE AIR FOR THE SERVICING OF THE TIRES IF:
 -THE OXYGEN IN THE TIRES IS NOT MORE THAN 5% (VOLUME) OR
 -MAINTENANCE PERSONNEL REMOVE THE AIR FROM THE TIRES AND INFLATE THEM WITH DRY NITROGEN BEFORE 15 HOURS TIME SERVICE. A CHEMICAL REACTION BETWEEN THE OXYGEN IN THE TIRES AND GASES FROM THE INNER LINER CAN CAUSE A TIRE EXPLOSION.
 (1)
 Before the first flight of the day, with the aircraft on its wheels:

 -make sure that the pressure of the tires is correct.To do this, use:
 -a pressure gage or
 -the Tire Pressure Indicating System (TPIS) if installed: .make sure that this circuit breaker 1GV is closed. .energize the electrical circuit (Ref. TASK 24-41-00-861-002). .on the ECAM control panel, push the WHEEL key: on the lower ECAM display unit, the WHEEL page comes into view showing the pressure of the tires.

 (2)
 At route stations: make sure that the tires on each landing gear have the same deflection (flatness). If you think that the deflection of one or two tires is not correct, do a check of the pressure of all the tires of the aircraft.

 NOTE : If possible, do the check when the tires are cold.
____ If it is necessary to do the check when the tires are hot:
 -the pressure in the tires will be higher than the nominal value
 -you must not deflate a hot tire.
 1EFF : ALL 1 32-41-00Page 631 1 1 Aug 01/05 1 1 1CES 1

 (a) Record the pressure of all the tires on a same landing gear. Record the pressure of the tire with the highest pressure.
 NOTE : The pressure of all the tires must be in the same range.____
 - If all the pressures are approximately the same, and higher than the specified operating pressure, no other steps are necessary. - If a tire has a pressure that is ten per cent below the highest pressure on that landing gear, inflate the tire to the value of the tire with the highest pressure. - Make an entry in the logbook. - If there is an entry in the logbook for this tire, replace the tire (Ref. TASK 32-41-11-000-006) (Ref. TASK 32-41-11-400-006) (Ref. TASK 32-41-12-000-001) (Ref. TASK 32-41-12-400-001). - If necessary, replace the adjacent tire (refer to the pressure table). If the pressure of a hot tire is less than or equal to the pressure specified for a cold tire, this tire is defective (it has a leak or a hole): - replace the tire and send it for a check (Ref. TASK 32-41-11-000-006) (Ref. TASK 32-41-11-400-006) (Ref. TASK 32-41-12-000-001) (Ref. TASK 32-41-12-400-001). 
R  **ON A/C 051-099, 
R  Subtask 32-41-00-210-058-A 
R  A. Check of the Pressure 
R R R R R R R R R R R R  WARNING : USE ONLY DRY NITROGEN OR OTHER INERT GASES TO INFLATE THE TIRES_______ ON THE MAIN GEAR WHEELS. THE OXYGEN IN THE GAS USED TO INFLATE THESE TIRES MUST NOT BE MORE THAN 5% (VOLUME). IF THE AIRCRAFT IS FAR FROM ITS BASE AND NO DRY NITROGEN IS AVAILABLE, YOU CAN USE AIR FOR THE SERVICING OF THE TIRES IF: - THE OXYGEN IN THE TIRES IS NOT MORE THAN 5% (VOLUME) OR - MAINTENANCE PERSONNEL REMOVE THE AIR FROM THE TIRES AND INFLATE THEM WITH DRY NITROGEN BEFORE 15 HOURS TIME SERVICE. A CHEMICAL REACTION BETWEEN THE OXYGEN IN THE TIRES AND GASES FROM THE INNER LINER CAN CAUSE A TIRE EXPLOSION. 

R 1EFF : ALL 1 32-41-00Page 632 1 1 May 01/05 1 1 1CES 1

R  (1) Before the first flight of the day, with the aircraft on its wheels: 
R  - make sure that the pressure of the tires is correct . To do this, 
R  use: 
R  - a pressure gage or 
R  - the Tire Pressure Indicating System (TPIS) if installed: 
R  . make sure that this circuit breaker 1GV is closed. 
R  . energize the electrical circuit (Ref. TASK 24-41-00-861-002). 
R  . on the ECAM control panel, push the WHEEL key: on the lower ECAM 
R  display unit, the WHEEL page comes into view showing the pressure 
R  of the tires. 
R  (2) At route stations: 
R  - make sure that the tires on each landing gear have the same 
R  deflection (flatness). If you think that the deflection of one or 
R  two tires is not correct, do a check of the pressure of all the 
R  tires of the aircraft. 
R 
R  NOTE : If possible, do the check when the tires are cold.____ 
　
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