W DOC AIRBUS | AMM A320F

Functional Check of Tire Pressures


TASK 32-41-00-210-003-A
Functional Check of Tire Pressures


ZONE: 700
1. Reason for the Job
Refer to the MPD TASK: 324100-01
FUNCTIONAL CHECK OF TIRE PRESSURES
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
GAGE - PRESSURE, TIRE
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
700
LANDING GEAR AND LANDING GEAR DOORS
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 12-14-32-614-001-A
Nitrogen Filling of the Tires
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 32-41-11-000-006-A
Removal of the MLG Wheel
TASK 32-41-11-400-006-A
Installation of the MLG Wheel
TASK 32-41-12-000-001-A
Removal of the NLG Wheel
TASK 32-41-12-400-001-A
Installation of the NLG Wheel
3. Job Set-up
Subtask 32-41-00-860-052-A
A. Safety Precautions
4. Procedure
WARNING: BE CAREFUL WHEN YOU INFLATE THE TIRES. USE A PRESSURE REGULATOR (OR PRESSURE RELIEF VALVE) BETWEEN THE PRESSURE SOURCE AND THE TIRE. MAKE SURE THAT THE PRESSURE REGULATOR IS ADJUSTED TO THE CORRECT PRESSURE FOR THE TIRE. IF THE PRESSURE SOURCE DOES NOT HAVE A PRESSURE REGULATOR, THERE IS A RISK OF INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
Subtask 32-41-00-210-058-A
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.
A. Functional Check of Tire Pressures
NOTE: If there is a large temperature difference between the departure (cold) and the arrival (hot) airports, the tire pressure at the arrival airport can be higher than the maximum of the normal operating range. Then, it is necessary to adjust the tire pressure in these conditions:
  • If the aircraft continues in operation in a hot area, and
  • If the time necessary to let the temperature of the tire decrease to the ambient temperature is not sufficient (a tire is cold approximately three hours after its operation).
   (1) For scheduled MPD checks, do the steps that follow:
Do the pressure check of the tires when they are cold and with the aircraft weight on its wheels.
NOTE: A tire is cold approximately three hours after its last operation. This time is necessary for the tire temperature to decrease to the ambient temperature.
     (a) To do this, refer to the pressure table in paragraph 4.B. and compare the tire pressure values with those that you find when you use:
  • A GAGE - PRESSURE, TIRE, or
  • The wheel-mounted tire-pressure indicators, if installed, or
  • The Tire Pressure Indicating System (TPIS), if installed.
       1 If you use the TPIS:
         a Make sure that circuit breaker 1GV is closed.
         b Energize the aircraft electrical circuit (Ref. AMM TASK 24-41-00-861-002).
         c On the ECAM control panel, push the WHEEL key:
  • On the lower ECAM DU, the WHEEL page comes into view and shows the tire pressures.
   (2) For checks of the tire pressure that are not scheduled MPD checks, do the steps as follow:
NOTE: If possible, do the check when the tires are cold (a tire is cold approximately three hours after its operation).
If it is necessary to do the check when the tires are hot, make sure that you do not deflate a hot tire.
     (a) For cold tires, refer to 4.A.(1).
     (b) For hot tires (if you cannot wait that the tire temperature decreases to the ambient temperature), do the steps that follow:
       1 Record the pressure of all the tires on a same landing gear.
Then, record the highest tire pressure.
NOTE: When a tire is hot, its pressure increases.
NOTE: If you do the check when the tires are hot, the pressure must be higher than the nominal value.
The nominal value is the lower limit of the normal pressure range (given in the pressure table in paragraph 4.B.).
       2 Compare these pressure values between them, and with the pressure table in paragraph 4.B, then do the steps that follow:
         a If all the pressure values are approximately the same and at least one is higher than the maximum of the normal pressure range:
  • Do a check of the pressure when the tires are cold, in a maximum of three days.
         b If all the pressure values are approximately the same, higher than the minimum of the normal pressure range and less than or equal to the maximum of the normal pressure range:
  • No other steps are necessary.
         c If the pressure of a tire is less than 90 percent of the highest recorded pressure:
         d If the pressure of a hot tire is less than or equal to the minimum of the normal pressure range, this tire is defective (it has a leak or a hole):
Subtask 32-41-00-210-059-F ** ON A/C NOT FOR ALL
B. Pressure table
NOTE: The tables that follow give all the tire pressure values in relation to the aircraft Maximum Takeoff Weight (MTOW) and tire dimensions.
NOTE: These pressure values are for tires with the aircraft weight on the wheels.
NOTE: (2):
  • If the aircraft operates on the ground with a flat tire, you must replace the related wheel and the adjacent wheel.
  • If you are sure that the pressure decreased while the aircraft was in the parked configuration (after the aircraft stopped), you must replace only the tire with the low pressure.
  • If you are not sure that the wheels did not turn with the deflated tire, you must also replace the adjacent wheel.
NOTE: If the tire pressure is incorrect, inflate or deflate the tire to get the correct pressure (Ref. AMM TASK 12-14-32-614-001).
   (1) MTOW 89T
TIRE PRESSURE ------------ NLG 30X8.8-15 30X8.8R15
TIRE PRESSURE ------------ MLG 49X18-22 1270X455R22
-------------------------------------- TIRE CONDITION/ACTION NECESSARY
More than 12.2 bar (177 psi)
More than 15.3 bar (222 psi)
Overinflation. Make sure that the measurement is correct with a different pressure gauge. If it is correct, deflate the tire to the maximum normal pressure.
From 11.6 bar (168 psi) to 12.2 bar (177 psi)
From 14.6 bar (212 psi) to 15.3 bar (222 psi)
Normal pressure range. Do not adjust the tire pressure.
From 11.0 bar (160 psi) to less than 11.6 bar (168 psi)
From 13.9 bar (202 psi) to less than 14.6 bar (212 psi)
Inflate the tire to the maximum normal pressure.
From 10.4 bar (151 psi) to less than 11.0 bar (160 psi)
From 13.1 bar (190 psi) to less than 13.9 bar (202 psi)
Inflate the tire to the maximum normal pressure. Measure the tire pressure again the next day. If the tire is deflated, replace the wheel. See NOTE (1).
From 9.3 bar (135 psi) to less than 10.4 bar (151 psi)
From 11.7 bar (170 psi) to less than 13.1 bar (190 psi)
Replace the wheel. See NOTE (1).
From 0.0 bar (0 psi) to less than 9.3 bar (135 psi)
From 0.0 bar (0 psi) to less than 11.7 bar (170 psi)
Replace the wheel and the adjacent wheel. See NOTES (1) and (2).
Subtask 32-41-00-210-059-J ** ON A/C NOT FOR ALL
B. Pressure Table
NOTE: The tables below show all the tire pressure values in relation to the aircraft weight (MTOW) and tire sizes.
NOTE: These pressure values are for tires with the aircraft weight on the wheels.
NOTE: (2):
  • If the aircraft rolled with a flat tire, replace the related wheel and the adjacent wheel.
  • If you are sure that the pressure loss occurred while the aircraft was in the parked configuration (after the aircraft stopped), replace only the tire with the low pressure.
  • If you cannot be sure that the wheels did not turn with the tire deflated, you must also replace the adjacent wheel.
NOTE: If the tire pressure is incorrect, inflate or deflate the tire to get the correct pressure (Ref. AMM TASK 12-14-32-614-001).
   (1) MTOW 75.5T
TIRE PRESSURE ------------ NLG 30X8.8-15 30X8.8R15
TIRE PRESSURE ------------ MLG 46X16-20 46X17R20
-------------------------------------- TIRE CONDITION/ACTION NECESSARY
More than
12.9 bar
(187 psi)
More than
14.5 bar
(210 psi)
Over-inflation. Make sure that the
measurement is correct with another
pressure gage. If it is correct,
deflate the tire to the maximum
normal pressure.
From 12.3 to
12.9 bar
(178-187 psi)
From 13.8 to
14.5 bar
(200-210 psi)
Normal pressure range. Do not adjust
the tire pressure.
From 11.7 to
less than 12.3 bar
(170-178 psi)
From 13.1 to
less than 13.8 bar
(190-200 psi)
Inflate the tire to the maximum
normal pressure.
From 11.1 to
less than 11.7 bar
(161-170 psi)
From 12.5 to
less than 13.1 bar
(181-190 psi)
Inflate the tire to the maximum
normal pressure. You must measure the
tire pressure again the next day. If
the tire is under-inflated again, you
must replace the wheel. See NOTE (1)
From 9.9 to
less than 11.1 bar
(144-161 psi)
From 11 to
less than 12.5 bar
(160-181 psi)
You must replace the wheel.
See NOTE (1)
From 0 to
less than 9.9 bar
(0-144psi)
From 0 to
less than 11 bar
(0-160psi)
You must replace the wheel and the
adjacent wheel. See NOTE (1) and (2)
   (2) MTOW 75.5T
TIRE PRESSURE ------------ MLG 49X17-20
TIRE PRESSURE ------------ MLG 49X19-20
-------------------------------------- TIRE CONDITION/ACTION NECESSARY
More than
12 bar
(174 psi)
More than
10.8 bar
(157 psi)
Over-inflation. Make sure that the
measurement is correct with another
pressure gage. If it is correct,
deflate the tire to the maximum
normal pressure.
From 11.4 to
12 bar
(165-174 psi)
From 10.3 to
10.8 bar
(149-157 psi)
Normal pressure range. Do not adjust
the tire pressure.
From 10.9 to
less than 11.4 bar
(158-165 psi)
From 9.8 to
less than 10.3 bar
(142-149 psi)
Inflate the tire to the maximum
normal pressure.
From 10.3 to
less than 10.9 bar
(149-158 psi)
From 9.3 to
less than 9.8 bar
(135-142 psi)
Inflate the tire to the maximum
normal pressure. You must measure the
tire pressure again the next day. If
the tire is under-inflated again, you
must replace the wheel. See NOTE (1)
From 9.2 to
less than 10.3 bar
(133-149 psi)
From 8.3 to
less than 9.3 bar
(120-135 psi)
You must replace the wheel.
See NOTE (1)
From 0 to
less than 9.2 bar
(0-133 psi)
From 0 to
less than 8.3 bar
(0-120 psi)
You must replace the wheel and the
adjacent wheel. See NOTE (1) and (2)
Subtask 32-41-00-210-059-Q ** ON A/C NOT FOR ALL
B. Pressure Table
NOTE: The tables below show all the tire pressure values in relation to the aircraft weight (MTOW) and tire sizes.
NOTE: These pressure values are for tires with the aircraft weight on the wheels.
NOTE: (2):
  • If the aircraft rolled with a flat tire, replace the related wheel and the adjacent wheel.
  • If you are sure that the pressure loss occurred while the aircraft was in the parked configuration (after the aircraft stopped), replace only the tire with the low pressure.
  • If you cannot be sure that the wheels did not turn with the tire deflated, you must also replace the adjacent wheel.
NOTE: If the tire pressure is incorrect, inflate or deflate the tire to get the correct pressure (Ref. AMM TASK 12-14-32-614-001).
   (1) MTOW 70T
TIRE PRESSURE ------------ NLG 30X8.8-15 30X8.8R15
TIRE PRESSURE ------------ MLG 46X16-20 46X17R20
-------------------------------------- TIRE CONDITION/ACTION NECESSARY
More than
13.1 bar
(190 psi)
More than
13.5 bar
(196 psi)
Over-inflation. Make sure that the
measurement is correct with another
pressure gage. If it is correct,
deflate the tire to the maximum
normal pressure.
From 12.5 to
13.1 bar
(181-190psi)
From 12.9 to
13.5 bar
(187-196psi)
Normal pressure range. Do not adjust
the tire pressure.
From 11.9 to
less than 12.5 bar
(173-181psi)
From 12.3 to
less than 12.9 bar
(178-187psi)
Inflate the tire to the maximum
normal pressure.
From 11.2 to
less than 11.9 bar
(162-173psi)
From 11.6 to
less than 12.3 bar
(168-178psi)
Inflate the tire to the maximum
normal pressure. You must measure the
tire pressure again the next day. If
the tire is under-inflated again, you
must replace the wheel. See NOTE (1)
From 10 to
less than 11.2 bar
(145-162psi)
From 10.3 to
less than 11.6 bar
(149-168psi)
You must replace the wheel.
See NOTE (1)
From 0 to
less than 10 bar
( 0-145psi)
From 0 to
less than 10.3 bar
( 0-149psi)
You must replace the wheel and the
adjacent wheel. See NOTE (1) and (2)
Subtask 32-41-00-210-059-BQ ** ON A/C NOT FOR ALL
B. Pressure table
NOTE: The tables that follow give all the tire pressure values in relation to the aircraft Maximum Takeoff Weight (MTOW) and tire dimensions.
NOTE: These pressure values are for tires with the aircraft weight on the wheels.
NOTE: (2):
  • If the aircraft operates on the ground with a flat tire, you must replace the related wheel and the adjacent wheel.
  • If you are sure that the pressure decreased while the aircraft was in the parked configuration (after the aircraft stopped), you must replace only the tire with the low pressure.
  • If you are not sure that the wheels did not turn with the deflated tire, you must also replace the adjacent wheel.
NOTE: If the tire pressure is incorrect, inflate or deflate the tire to get the correct pressure (Ref. AMM TASK 12-14-32-614-001).
   (1) MTOW 93.5T
TIRE PRESSURE ------------ NLG 30X8.8-15 30X8.8R15
TIRE PRESSURE ------------ MLG 49X18-22 1270X455R22
-------------------------------------- TIRE CONDITION/ACTION NECESSARY
More than
12.2 bars
(177 psi)
More than
15.8 bars
(229 psi)
Overinflation. Make sure that the
measurement is correct with a different
pressure gauge. If it is correct,
deflate the tire to the maximum
normal pressure.
From 11.6 to
12.2 bars
(168-177 psi)
From 15 to
15.8 bars
(218-229 psi)
Normal pressure range. Do not adjust
the tire pressure.
From 11 to
less than 11.6 bars
(160-168 psi)
From 14.3 to
less than 15 bars
(207-218 psi)
Inflate the tire to the maximum
normal pressure.
From 10.4 to
less than 11 bars
(151-160 psi)
From 13.5 to
less than 14.3 bars
(196-207 psi)
Inflate the tire to the maximum
normal pressure. Measure the
tire pressure again the next day. If
the tire is deflated,
replace the wheel. See NOTE (1).
From 9.3 to
less than 10.4 bars
(135-151 psi)
From 12 to
less than 13.5 bars
(174-196 psi)
Replace the wheel.
See NOTE (1).
From 0 to
less than 9.3 bars
(0-135 psi)
From 0 to
less than 12 bars
(0-174psi)
Replace the wheel and the
adjacent wheel. See NOTES (1) and (2)
Subtask 32-41-00-210-059-CD ** ON A/C NOT FOR ALL
B. Pressure table
NOTE: The tables below show all the tire pressure values in relation to the aircraft weight (MTOW) and tire sizes.
NOTE: These pressure values are for tires with the aircraft weight on the wheels.
NOTE: (2):
  • If the aircraft rolled with a flat tire, replace the related wheel and the adjacent wheel.
  • If you are sure that the pressure loss occurred while the aircraft was in the parked configuration (after the aircraft stopped), replace only the tire with the low pressure.
  • If you cannot be sure that the wheels did not turn with the tire deflated, you must also replace the adjacent wheel.
NOTE: If the tire pressure is incorrect, inflate or deflate the tire to get the correct pressure (Ref. AMM TASK 12-14-32-614-001).
   (1) MTOW 83T / 89T
TIRE PRESSURE ------------ NLG 30X8.8-15 30X8.8R15
TIRE PRESSURE ------------ MLG 49X18-22 1270X455R22
-------------------------------------- TIRE CONDITION/ACTION NECESSARY
More than
12.2 bar
(177 psi)
More than
15.3 bar
(222 psi)
Over-inflation. Make sure that the
measurement is correct with another
pressure gage. If it is correct,
deflate the tire to the maximum
normal pressure.
From 11.6 to
12.2 bar
(168-177 psi)
From 14.6 to
15.3 bar
(212-222 psi)
Normal pressure range. Do not adjust
the tire pressure.
From 11 to
less than 11.6 bar
(160-168 psi)
From 13.9 to
less than 14.6 bar
(202-212 psi)
Inflate the tire to the maximum
normal pressure.
From 10.4 to
less than 11 bar
(151-160 psi)
From 13.1 to
less than 13.9 bar
(190-202 psi)
Inflate the tire to the maximum
normal pressure. You must measure the
tire pressure again the next day. If
the tire is under-inflated again, you
must replace the wheel. See NOTE (1)
From 9.3 to
less than 10.4 bar
(135-151 psi)
From 11.7 to
less than 13.1 bar
(170-191 psi)
You must replace the wheel.
See NOTE (1)
From 0 to
less than 9.3 bar
(0-135 psi)
From 0 to
less than 11.7 bar
(0-170 psi)
You must replace the wheel and the
adjacent wheel. See NOTE (1) and (2)
Subtask 32-41-00-210-059-CT ** ON A/C NOT FOR ALL
B. Pressure table
NOTE: The tables below show all the tire pressure values in relation to the aircraft weight (MTOW) and tire sizes.
NOTE: These pressure values are for tires with the aircraft weight on the wheels.
NOTE: (2):
  • If the aircraft rolled with a flat tire, replace the related wheel and the adjacent wheel.
  • If you are sure that the pressure loss occurred while the aircraft was in the parked configuration (after the aircraft stopped), replace only the tire with the low pressure.
  • If you cannot be sure that the wheels did not turn with the tire deflated, you must also replace the adjacent wheel.
NOTE: If the tire pressure is incorrect, inflate or deflate the tire to get the correct pressure (Ref. AMM TASK 12-14-32-614-001).
   (1) MTOW 93.5T
TIRE PRESSURE ------------ NLG 30X8.8R15
TIRE PRESSURE ------------ MLG 1270X455R22
-------------------------------------- TIRE CONDITION/ACTION NECESSARY
More than
12.2 bars
(177 psi)
More than
15.8 bars
(229 psi)
Over-inflation. Make sure that the
measurement is correct with another
pressure gage. If it is correct,
deflate the tire to the maximum
normal pressure.
From 11.6 to
12.2 bars
(168-177 psi)
From 15 to
15.8 bars
(218-229 psi)
Normal pressure range. Do not adjust
the tire pressure.
From 11 to
less than 11.6 bars
(160-168 psi)
From 14.3 to
less than 15 bars
(207-218 psi)
Inflate the tire to the maximum
normal pressure.
From 10.4 to
less than 11 bars
(151-160 psi)
From 13.5 to
less than 14.3 bars
(196-207 psi)
Inflate the tire to the maximum
normal pressure. You must measure the
tire pressure again the next day. If
the tire is under-inflated again, you
must replace the wheel. See NOTE (1)
From 9.3 to
less than 10.4 bars
(135-151 psi)
From 12 to
less than 13.5 bars
(174-196 psi)
You must replace the wheel.
See NOTE (1)
From 0 to
less than 9.3 bars
(0-135 psi)
From 0 to
less than 12 bars
(0-174 psi)
You must replace the wheel and the
adjacent wheel. See NOTE (1) and (2)
Subtask 32-41-00-210-059-DW ** ON A/C NOT FOR ALL
B. Pressure Table
NOTE: The tables below show all the tire pressure values in relation to the aircraft weight (MTOW) and tire sizes.
NOTE: These pressure values are for tires with the aircraft weight on the wheels.
NOTE: If the aircraft turned with a flat tire, replace the related wheel and the adjacent wheel.
If you are sure that the pressure loss occurred while the aircraft was in the parked configuration (after the aircraft stopped), replace only the tire with the low pressure.
If you cannot be sure that the wheels did not turn with the tire deflated, you must also replace the adjacent wheel.
NOTE: If the tire pressure is incorrect, inflate or deflate the tire to get the correct pressure (Ref. AMM TASK 12-14-32-614-001).
   (1) MTOW 77T
TIRE PRESSURE ------------ NLG 30X8.8R15
TIRE PRESSURE ------------ MLG 46X17R20
-------------------------------------- TIRE CONDITION/ACTION NECESSARY
More than 12.9 bar (187 psi)
More than 15.1 bar (219 psi)
Over-inflation. Make sure that the
measurement is correct with another
pressure gage. If it is correct,
deflate the tire to the maximum
normal pressure.
From 12.3 bar (178 psi) to 12.9 bar (187 psi)
From 14.4 bar (209 psi) to 15.1 bar (219 psi)
Normal pressure range. Do not adjust
the tire pressure.
From 11.7 bar (170 psi) to less than 12.3 bar (178 psi)
From 13.7 bar (199 psi) to less than 14.4 bar (209 psi)
Inflate the tire to the maximum
normal pressure.
From 11.1 bar (161 psi) to less than 11.7 bar (170 psi)
From 13.0 bar (189 psi) to less than 13.7 bar (199 psi)
Inflate the tire to the maximum
normal pressure. Measure the
tire pressure again the next day. If
the tire is under-inflated again,
replace the wheel (Ref. AMM TASK 32-41-11-000-006), (Ref. AMM TASK 32-41-11-400-006),
(Ref. AMM TASK 32-41-12-000-001) and (Ref. AMM TASK 32-41-12-400-001).
From 9.9 bar (144 psi) to less than 11.1 bar (161 psi)
From 11.6 bar (168 psi) to
less than 13.0 bar (189 psi)
Replace the wheel
(Ref. AMM TASK 32-41-11-000-006), (Ref. AMM TASK 32-41-11-400-006),
(Ref. AMM TASK 32-41-12-000-001) and (Ref. AMM TASK 32-41-12-400-001).
From 0.0 bar (0 psi) to less than 9.9 bar (144 psi)
From 0 bar (0 psi) to less than 11.6 bar (168 psi)
Replace the wheel and the
adjacent wheel
(Ref. AMM TASK 32-41-11-000-006), (Ref. AMM TASK 32-41-11-400-006),
(Ref. AMM TASK 32-41-12-000-001) and (Ref. AMM TASK 32-41-12-400-001).
[Rev.10 from 2021] 2026.04.01 00:47:11 UTC