DOC AIRBUS | AMM A320FInstallation of the Standby Altimeter
TASK 34-21-22-400-001-A
Installation of the Standby Altimeter
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
B. Referenced Information
3. Job Set-up
Subtask 34-21-22-865-051-A ** ON A/C NOT FOR ALL
Subtask 34-21-22-420-050-A ** ON A/C NOT FOR ALL
Subtask 34-21-22-410-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:23:13 UTC
Installation of the Standby Altimeter
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 211 | COCKPIT |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 25-13-41-000-002-A | Removal of the Sidewall Panels |
| TASK 25-13-41-400-002-A | Installation of the Sidewall Panels |
| TASK 33-13-00-710-001-A | Operational Test of the Instrument and Panel Integral-Lighting |
Standby AltimeterSubtask 34-21-22-865-051-A ** ON A/C NOT FOR ALL
A. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
Subtask 34-21-22-010-051-A ** ON A/C NOT FOR ALL 4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | NAV/STBY/ALTM | 16FN | F14 |
| 122VU | LIGHTING/INSTL LT/MAIN INST/PNL AND/PED | 4LF | Y04 |
Subtask 34-21-22-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Standby Altimeter (3FN)
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking plugs from the line ends (3) and (5).
(4) Make a loop of the flexible hose and connect the quick-disconnect coupling (5) to the receptacle (3) of the standby altimeter (2).
(5) Make sure that you can see the blue ring on the quick-disconnect coupling.
(6) Pull the quick-disconnect coupling to make sure that it is correctly attached.
(7) Make sure that the quick-disconnect coupling is correctly engaged (the pin located on the quick-disconnect male part is fully engaged into the groove located in the quick-disconnect female part).
(8) Remove the blanking caps from the electrical connectors (4) and (6).
(9) Connect the electrical connector (6) to the receptacle (4) of the standby altimeter (2).
(10) Install the standby altimeter (2) in its housing.
(11) Look behind the standby altimeter and make sure that the position of the flexible hoses (static pressure line) is satisfactory (no crushing, kinks, creases or folds).
(12) Tighten the screws (1).
Subtask 34-21-22-865-052-A ** ON A/C NOT FOR ALL (1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking plugs from the line ends (3) and (5).
(4) Make a loop of the flexible hose and connect the quick-disconnect coupling (5) to the receptacle (3) of the standby altimeter (2).
(5) Make sure that you can see the blue ring on the quick-disconnect coupling.
(6) Pull the quick-disconnect coupling to make sure that it is correctly attached.
(7) Make sure that the quick-disconnect coupling is correctly engaged (the pin located on the quick-disconnect male part is fully engaged into the groove located in the quick-disconnect female part).
(8) Remove the blanking caps from the electrical connectors (4) and (6).
(9) Connect the electrical connector (6) to the receptacle (4) of the standby altimeter (2).
(10) Install the standby altimeter (2) in its housing.
(11) Look behind the standby altimeter and make sure that the position of the flexible hoses (static pressure line) is satisfactory (no crushing, kinks, creases or folds).
(12) Tighten the screws (1).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 34-21-22-710-050-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | NAV/STBY/ALTM | 16FN | F14 |
| 122VU | LIGHTING/INSTL LT/MAIN INST/PNL AND/PED | 4LF | Y04 |
C. Do the operational test of the instrument and panel integral lighting (Ref. AMM TASK 33-13-00-710-001).
5. Close-upSubtask 34-21-22-410-050-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Install the thermoformed cover on the center instrument panel.
(2) Install the sidewall 211LW (Ref. AMM TASK 25-13-41-400-002).
(3) Make sure that the work area is clean and clear of tools and other items.
(1) Install the thermoformed cover on the center instrument panel.
(2) Install the sidewall 211LW (Ref. AMM TASK 25-13-41-400-002).
(3) Make sure that the work area is clean and clear of tools and other items.