DOC AIRBUS | AMM A320FInstallation of the Attitude Monitor
TASK 28-43-24-400-001-A
Installation of the Attitude Monitor
Self Explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 28-43-24-941-052-A ** ON A/C NOT FOR ALL
Subtask 28-43-24-420-051-A ** ON A/C NOT FOR ALL
Subtask 28-43-24-410-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:18:14 UTC
Installation of the Attitude Monitor
WARNING:
MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.
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.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
FIN: 39QM ** ON A/C NOT FOR ALL
1. Reason for the JobSelf Explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | SAFETY BARRIER(S) |
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.04JMD9) | Top Coat Polyurethane-- Decorative Furnishing |
| (Material No.05BAE1) | Threadlocking Adhesive-- Medium strength - |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 192MB |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 07-11-00-586-002-A | Lowering of the Aircraft for Maintenance Operations |
| TASK 08-21-00-200-001-A-02 | Quick Leveling Procedure with the ADIRU |
| TASK 08-22-00-200-001-A | Precise Leveling |
| TASK 12-11-28-860-001-A | Procedure to use the ADIRU to Find the Pitch and Roll Data |
Attitude MonitorSubtask 28-43-24-941-052-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) Make sure that the SAFETY BARRIER(S)S are in position.
(2) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the landing gear and the related doors.
Subtask 28-43-24-860-051-A ** ON A/C NOT FOR ALL (1) Make sure that the SAFETY BARRIER(S)S are in position.
(2) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the landing gear and the related doors.
B. Aircraft Maintenance Configuration
(1) Make sure that the access panel 192MB is open.
4. Procedure(1) Make sure that the access panel 192MB is open.
Subtask 28-43-24-420-051-A ** ON A/C NOT FOR ALL
A. Preparation for Installation
(1) Clean the component interfaces and the adjacent areas with Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Do an inspection of the component interfaces and the adjacent area.
Subtask 28-43-24-420-050-A ** ON A/C NOT FOR ALL (1) Clean the component interfaces and the adjacent areas with Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Do an inspection of the component interfaces and the adjacent area.
B. Installation of the Attitude Monitor
(2) Apply the red color Top Coat Polyurethane-- Decorative Furnishing (Material No.04JMD9) across the heads of the three screws (1) and the adjacent surface of the attitude monitor (2).
(3) If the attitude monitor mounting datum or the installation of the washers (3) have not changed, no adjustment is necessary.
(4) If the attitude monitor mounting datum or the installation of the washers (3) have changed, do the adjustment in paragraph 4.C.
Subtask 28-43-24-820-050-B ** ON A/C NOT FOR ALL NOTE: Make sure that the washers (3) are installed in the position that they were removed from.
(1) Position the three screws (1) and the washers (3) in the attitude monitor (2) and install it on the mounting plate assembly. (2) Apply the red color Top Coat Polyurethane-- Decorative Furnishing (Material No.04JMD9) across the heads of the three screws (1) and the adjacent surface of the attitude monitor (2).
(3) If the attitude monitor mounting datum or the installation of the washers (3) have not changed, no adjustment is necessary.
(4) If the attitude monitor mounting datum or the installation of the washers (3) have changed, do the adjustment in paragraph 4.C.
C. Adjustment of the Attitude Monitor
(a) Do the aircraft precise leveling (Ref. AMM TASK 08-22-00-200-001) to put the aircraft in position to have a 0 degree pitch, 0 degree roll. Use the standard reference marks of the aircraft (tolerance +/- 5 minutes).
(b) If the attitude monitor shows the D4 position, the attitude monitor is correct and no adjustment is necessary.
(c) If the attitude monitor does not show the D4 position, do the adjustment procedure that follows:
1 Remove the screw (13) and the three screws (14).
2 Remove the cover plate (15).
3 Tighten the spring loaded screws (12) until the springs are fully compressed, and then loosen them one full turn.
4 Turn the spring loaded screws (12) to adjust the attitude monitor until the bubble is at the D4 position.
5 Put the cover plate (15) in the position for installation.
6 Apply Threadlocking Adhesive-- Medium strength - (Material No.05BAE1) on the threads of the screws (13) and (14).
7 Install the screw (13) and the three screws (14).
8 Lower the aircraft on its wheels (Ref. AMM TASK 07-11-00-586-002).
(2) Quick leveling with the ADIRU and with aircraft on ground:
(a) Use the ADIRU (Ref. AMM TASK 12-11-28-860-001) to get the aircraft attitude pitch and roll data.
(b) Refer to table 1 to identify the reference square on the attitude monitor (Example: F4).
(c) If the ADIRU figures for pitch and roll are out of the table range, do the quick leveling procedure with the ADIRU (Ref. AMM TASK 08-21-00-200-001) to get the pitch and roll figures in the table range.
(d) Look at the attitude monitor:
1 If the attitude monitor shows the identified reference square (Example: F4), no adjustment is necessary.
2 If the attitude monitor does not show the identified reference square, do the adjustment procedure that follows:
a Remove the screw (13) and the three screws (14).
b Remove the cover plate (15).
c Tighten the spring loaded screws (12) until the springs are fully compressed, and then loosen them one full turn.
d Turn the spring loaded screws (12) to adjust the attitude monitor until the bubble is in the identified reference square.
e Put the cover plate (15) in the position for installation.
f Apply Threadlocking Adhesive-- Medium strength - (Material No.05BAE1) on the threads of the screws (13) and (14).
g Install the screw (13) and the three screws (14).
h Lower the aircraft on its wheels (Ref. AMM TASK 07-11-00-586-002).
5. Close-upNOTE: There are two methods to adjust the attitude monitor.
(1) Precise leveling with the aircraft on jacks: (a) Do the aircraft precise leveling (Ref. AMM TASK 08-22-00-200-001) to put the aircraft in position to have a 0 degree pitch, 0 degree roll. Use the standard reference marks of the aircraft (tolerance +/- 5 minutes).
(b) If the attitude monitor shows the D4 position, the attitude monitor is correct and no adjustment is necessary.
(c) If the attitude monitor does not show the D4 position, do the adjustment procedure that follows:
1 Remove the screw (13) and the three screws (14).
2 Remove the cover plate (15).
3 Tighten the spring loaded screws (12) until the springs are fully compressed, and then loosen them one full turn.
4 Turn the spring loaded screws (12) to adjust the attitude monitor until the bubble is at the D4 position.
5 Put the cover plate (15) in the position for installation.
6 Apply Threadlocking Adhesive-- Medium strength - (Material No.05BAE1) on the threads of the screws (13) and (14).
7 Install the screw (13) and the three screws (14).
8 Lower the aircraft on its wheels (Ref. AMM TASK 07-11-00-586-002).
(2) Quick leveling with the ADIRU and with aircraft on ground:
(a) Use the ADIRU (Ref. AMM TASK 12-11-28-860-001) to get the aircraft attitude pitch and roll data.
(b) Refer to table 1 to identify the reference square on the attitude monitor (Example: F4).
(c) If the ADIRU figures for pitch and roll are out of the table range, do the quick leveling procedure with the ADIRU (Ref. AMM TASK 08-21-00-200-001) to get the pitch and roll figures in the table range.
(d) Look at the attitude monitor:
1 If the attitude monitor shows the identified reference square (Example: F4), no adjustment is necessary.
2 If the attitude monitor does not show the identified reference square, do the adjustment procedure that follows:
a Remove the screw (13) and the three screws (14).
b Remove the cover plate (15).
c Tighten the spring loaded screws (12) until the springs are fully compressed, and then loosen them one full turn.
d Turn the spring loaded screws (12) to adjust the attitude monitor until the bubble is in the identified reference square.
e Put the cover plate (15) in the position for installation.
f Apply Threadlocking Adhesive-- Medium strength - (Material No.05BAE1) on the threads of the screws (13) and (14).
g Install the screw (13) and the three screws (14).
h Lower the aircraft on its wheels (Ref. AMM TASK 07-11-00-586-002).
Subtask 28-43-24-410-050-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access panel 192MB.
Subtask 28-43-24-942-051-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access panel 192MB.
B. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the WARNING NOTICE(S).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Remove the safety barriers.
(2) Remove the WARNING NOTICE(S).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.