Nitrogen Filling of the Tires

TASK 12-14-32-614-001-A
Nitrogen Filling of the Tires

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ADAPTER - TIRE INFLATION/DEFLATION
No specific	1	CART - INFLATION, TIRE, NITROGEN
No specific	AR	SAFETY BARRIER(S)
No specific	Torque wrench: range to between 0.1 and 0.05 m.daN (8.85 and 4.42 lbf.in )

3. Job Set-up
Subtask 12-14-32-941-062-A

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.

Subtask 12-14-32-941-051-A

B. Preparation

WARNING: LET THE BRAKES AND THE WHEELS BECOME COOL BEFORE YOU GO NEAR THE LANDING GEAR. DO NOT APPLY A LIQUID OR GAS DIRECTLY ON A HOT WHEEL OR BRAKE UNIT. THIS CAN CAUSE A TIRE EXPLOSION AND/OR A WHEEL RIM BURST.

WARNING: DO NOT LET COMPRESSED GAS TOUCH YOUR SKIN. THE GAS CAN GO THROUGH THE SKIN AND MAKE BUBBLES IN THE BLOOD. THIS CONDITION CAN KILL YOU.

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.

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)

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) Put the CART - INFLATION, TIRE, NITROGEN near the tire to be inflated.
(2) Remove the tire inflation-valve cap.
(3) Install the ADAPTER - TIRE INFLATION/DEFLATION on the tire inflation valve. Connect the tire inflation cart to the tire inflation adaptor.

WARNING: DO NOT INFLATE THE TIRES TO MORE THAN THE MAXIMUM RATED PRESSURE. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT CAN OCCUR.

(4) If there is a large temperature decrease between the departure and the destination airports:
(a) You must adjust the tire pressure for the colder airport before the flight.
(b) If the temperature difference is equal to or more than 24 deg.C (43 deg.F):
1 Increase the given tire pressure by 3.7% for each 10 deg.C (18 deg.F) of temperature difference.

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! EXAMPLE: Temperature at departure airport = 20 deg.C (68 deg.F) !

! Temperature at arrival airport = -10 deg.C (+14 deg.F) !

! Temperature difference = 30 deg.C (54 deg.F). !

!-----------------------------------------------------------------------------!

! Increase the tire pressure: 30/10 x 3.7% = 11.1%. !

!-----------------------------------------------------------------------------!

! If the loaded tire pressure is 13.0 bar (189 psi), !

! increase the tire pressure: !

! 13.0 bar (189 psi) + (13.0 bar (189 psi)x 11.1%)) !

! = 14.4 bar (209 psi). !

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4. Procedure

NOTE: Airbus recommends that when you inflate the tires, you must use the maximum pressure of the normal pressure range (given in the table). This will decrease the number of times the tires are deflated.

NOTE: In the tables that follow, the term:

Loaded is for the aircraft weight on the wheels
Unloaded is when the applicable wheel is lifted on jacks.

Subtask 12-14-32-614-056-C ** ON A/C NOT FOR ALL

A. Nitrogen Filling of the NLG Tires
(1) Refer to the table to find the correct NLG tire pressure. If necessary, inflate the tire(s) with nitrogen (from an approved source) to the correct pressure.

A/C MAXIMUM TAKE-OFF WEIGHT (MTOW)	TIRE DIMENSION AND TYPE	INFLATION PRESSURE UNLOADED BARS (PSI)	INFLATION PRESSURE LOADED BARS (PSI)
89000 kg (196211 lb)	30 X 8.8 - 15 CONVENTIONAL	11.2 bar (162 psi) normal 11.8 bar (171 psi) max	11.6 bar (168 psi) normal 12.2 bar (177 psi) max
89000 kg (196211 lb)	30 X 8.8 R15 RADIAL	11.2 bar (162 psi) normal 11.8 bar (171 psi) max	11.6 bar (168 psi) normal 12.2 bar (177 psi) max

Subtask 12-14-32-614-057-C ** ON A/C NOT FOR ALL

B. Nitrogen Filling of the MLG Tires
(1) Refer to the table to find the correct MLG tire pressure. If necessary, inflate the tire(s) with nitrogen (from an approved source) to the correct pressure.

A/C MAXIMUM TAKE-OFF WEIGHT (MTOW)	TIRE DIMENSION AND TYPE	INFLATION PRESSURE UNLOADED BARS (PSI)	INFLATION PRESSURE LOADED BARS (PSI)
89000 kg (196211 lb)	1270 X 455 R22 RADIAL	14.0 bar (203 psi) normal 14.7 bar (213 psi) max	14.6 bar (212 psi) normal 15.3 bar (222 psi) max
89000 kg (196211 lb)	49 X 18 - 22 CONVENTIONAL	14.0 bar (203 psi) normal 14.7 bar (213 psi) max	14.6 bar (212 psi) normal 15.3 bar (222 psi) max

Subtask 12-14-32-614-056-K ** ON A/C NOT FOR ALL

C. Nitrogen Filling of the NLG Tires
(1) Refer to the table to find the correct NLG tire pressure. If necessary, inflate the tire(s) with nitrogen (from an approved source) to the correct pressure.

A/C MAXIMUM TAKE-OFF WEIGHT (MTOW)	TIRE DIMENSION AND TYPE	INFLATION PRESSURE UNLOADED BARS (PSI)	INFLATION PRESSURE LOADED BARS (PSI)
75500 kg (166449 lb)	30 X 8.8 - 15 CONVENTIONAL	11.8 (171) normal 12.4 (180) max	12.3 (178) normal 12.9 (187) max
75500 kg (166449 lb)	30 X 8.8 R15 RADIAL	11.8 (171) normal 12.4 (180) max	12.3 (178) normal 12.9 (187) max

Subtask 12-14-32-614-057-K ** ON A/C NOT FOR ALL

D. Nitrogen Filling of the MLG Tires
(1) Refer to the table to find the correct MLG tire pressure. If necessary, inflate the tire(s) with nitrogen (from an approved source) to the correct pressure.

A/C MAXIMUM TAKE-OFF WEIGHT (MTOW)	TIRE DIMENSION AND TYPE	INFLATION PRESSURE UNLOADED BARS (PSI)	INFLATION PRESSURE LOADED BARS (PSI)
75500 kg (166449 lb)	46 X 17 R20 RADIAL	13.3 bar (193 psi) normal 14.0 bar (203 psi) max	13.8 bar (200 psi) normal 14.5 bar (210 psi) max
75500 kg (166449 lb)	49 X 19 R20 RADIAL	9.9 bar (143.5873 psi) normal 10.4 bar (151 psi) max	10.3 bar (149 psi) normal 10.8 bar (157 psi) max
75500 kg (166449 lb)	46 X 16 - 20 CONVENTIONAL	13.3 bar (193 psi) normal 14.0 bar (203 psi) max	13.8 bar (200 psi) normal 14.5 bar (210 psi) max
75500 kg (166449 lb)	49 X 17 - 20 CONVENTIONAL	11.0 bar (160 psi) normal 11.6 bar (168 psi) max	11.4 bar (165 psi) normal 12.0 bar (174 psi) max
75500 kg (166449 lb)	49 X 19 - 20 CONVENTIONAL	9.9 bar (144 psi) normal 10.4 bar (151 psi) max	10.3 bar (149 psi) normal 10.8 bar (157 psi) max

Subtask 12-14-32-614-056-Q ** ON A/C NOT FOR ALL

E. Nitrogen Filling of the NLG Tires
(1) Refer to the table to find the correct NLG tire pressure. If necessary, inflate the tire(s) with nitrogen (from an approved source) to the correct pressure.

A/C MAXIMUM TAKE-OFF WEIGHT (MTOW)	TIRE DIMENSION AND TYPE	INFLATION PRESSURE UNLOADED BARS (PSI)	INFLATION PRESSURE LOADED BARS (PSI)
70000 kg (154324 lb)	30 X 8.8 - 15 CONVENTIONAL	12.0 (174) normal 12.6 (182) max	12.5 (181) normal 13.1 (190) max
70000 kg (154324 lb)	30 X 8.8 R15 RADIAL	12.0 (174) normal 12.6 (182) max	12.5 (181) normal 13.1 (190) max

Subtask 12-14-32-614-057-R ** ON A/C NOT FOR ALL

F. Nitrogen Filling of the MLG Tires
(1) Refer to the table to find the correct MLG tire pressure. If necessary, inflate the tire(s) with nitrogen (from an approved source) to the correct pressure.

A/C MAXIMUM TAKE-OFF WEIGHT (MTOW)	TIRE DIMENSION AND TYPE	INFLATION PRESSURE UNLOADED BARS (PSI)	INFLATION PRESSURE LOADED BARS (PSI)
70000 kg (154324 lb)	46 X 16 - 20 CONVENTIONAL	12.4 (180) normal 13.0 (188) max	12.9 (187) normal 13.5 (196) max
70000 kg (154324 lb)	46 X 17 R20 RADIAL	12.4 (180) normal 13.0 (188) max	12.9 (187) normal 13.5 (196) max

Subtask 12-14-32-614-056-AH ** ON A/C NOT FOR ALL

G. Nitrogen Filling of the NLG Tires
(1) Refer to the table to find the correct NLG tire pressure. If necessary, inflate the tire(s) with nitrogen (from an approved source) to the correct pressure.

A/C MAXIMUM TAKE-OFF WEIGHT (MTOW)	TIRE DIMENSION AND TYPE	INFLATION PRESSURE UNLOADED BARS (PSI)	INFLATION PRESSURE LOADED BARS (PSI)
93500 kg (206132 lb)	30 X 8.8 - 15 CONVENTIONAL	11.2 (162) normal 11.8 (171) max	11.6 (168) normal 12.2 (177) max
93500 kg (206132 lb)	30 X 8.8 R15 RADIAL	11.2 (162) normal 11.8 (171) max	11.6 (168) normal 12.2 (177) max

Subtask 12-14-32-614-057-AY ** ON A/C NOT FOR ALL

H. Nitrogen Filling of the MLG Tires
(1) Refer to the table to find the correct MLG tire pressure. If necessary, inflate the tire(s) with nitrogen (from an approved source) to the correct pressure.

A/C MAXIMUM TAKE-OFF WEIGHT (MTOW)	TIRE DIMENSION AND TYPE	INFLATION PRESSURE UNLOADED BARS (PSI)	INFLATION PRESSURE LOADED BARS (PSI)
93500 kg (206132 lb)	1270 X 455 R22 RADIAL	14.4 bar (209 psi) normal 15.1 bar (219 psi) max	15.0 bar (218 psi) normal 15.8 bar (229 psi) max
93500 kg (206132 lb)	49 X 18 - 22 CONVENTIONAL	14.4 bar (209 psi) normal 15.1 bar (219 psi) max	15.0 bar (218 psi) normal 15.8 bar (229 psi) max

Subtask 12-14-32-614-056-AT ** ON A/C NOT FOR ALL

I. Nitrogen Filling of the NLG Tires
(1) Refer to the table to find the correct NLG tire pressure. If necessary, inflate the tire(s) with nitrogen (from an approved source) to the correct pressure.

A/C MAXIMUM TAKE-OFF WEIGHT (MTOW)	TIRE DIMENSION AND TYPE	INFLATION PRESSURE UNLOADED BARS (PSI)	INFLATION PRESSURE LOADED BARS (PSI)
77000 kg (169756 lb)	30 X 8.8 R15 RADIAL	11.8 (171) normal 12.4 (180) max	12.3 (178) normal 12.9 (187) max

Subtask 12-14-32-614-057-BJ ** ON A/C NOT FOR ALL

J. Nitrogen Filling of the MLG Tires
(1) Refer to the table to find the correct MLG tire pressure. If necessary, inflate the tire(s) with nitrogen (from an approved source) to the correct pressure.

A/C MAXIMUM TAKE-OFF WEIGHT (MTOW)	TIRE DIMENSION AND TYPE	INFLATION PRESSURE UNLOADED BARS (PSI)	INFLATION PRESSURE LOADED BARS (PSI)
77000 kg (169756 lb)	46 X 17 R20 RADIAL	13.8 (200) normal 14.5 (210) max	14.4 (209) normal 15.1 (219) max

Subtask 12-14-32-614-056-AX ** ON A/C NOT FOR ALL

K. Nitrogen Filling of the NLG Tires
(1) Refer to the table to find the correct NLG tire pressure. If necessary, inflate the tire(s) with nitrogen (from an approved source) to the correct pressure.

A/C MAXIMUM TAKE-OFF WEIGHT (MTOW)	TIRE DIMENSION AND TYPE	INFLATION PRESSURE UNLOADED BARS (PSI)	INFLATION PRESSURE LOADED BARS (PSI)
93500 kg (206132 lb)	30 X 8.8 R15 RADIAL	11.2 (162) normal 11.8 (171) maximum	11.6 (168) normal 12.2 (177) maximum

Subtask 12-14-32-614-057-BK ** ON A/C NOT FOR ALL

L. Nitrogen Filling of the MLG Tires
(1) Refer to the table to find the correct MLG tire pressure. If necessary, inflate the tire(s) with nitrogen (from an approved source) to the correct pressure.

A/C MAXIMUM TAKE-OFF WEIGHT (MTOW)	TIRE DIMENSION AND TYPE	INFLATION PRESSURE UNLOADED BARS (PSI)	INFLATION PRESSURE LOADED BARS (PSI)
93500 kg (206132 lb)	1270 X 455 R22 RADIAL	14.4 (209) normal 15.1 (219) maximum	15.0 (218) normal 15.8 (229) maximum

5. Close-up
Subtask 12-14-32-942-051-A

A. Removal of the Equipment
(1) If used, remove the safety barriers.
(2) Disconnect the tire inflation cart, adaptor and gage.
(3) Do a visual inspection of the tire inflation valve and the tire inflation valve-cap. Make sure that their threads are not damaged.
(4) Install the tire inflation valve-cap.
(a) If the tire inflation valve-cap has flats, TORQUE it to between 0.1 and 0.05 m.daN (8.85 and 4.42 lbf.in )

.
(b) If the tire inflation valve-cap is knurled, fully tighten it.
(5) Remove the inflation cart from the area.
(6) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 04:27:23 UTC