DOC AIRBUS | AMM A320FInstallation of the Metric Altimeter
TASK 34-21-25-400-001-A
Installation of the Metric 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 34-21-25-865-051-A ** ON A/C NOT FOR ALL
Subtask 34-21-25-420-050-A ** ON A/C NOT FOR ALL
Subtask 34-21-25-410-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 07:13:53 UTC
Installation of the Metric 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 |
Metric AltimeterSubtask 34-21-25-865-051-A ** ON A/C NOT FOR ALL
A. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
Subtask 34-21-25-010-051-A ** ON A/C NOT FOR ALL 4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 122VU | LIGHTING/INSTL LT/MAIN INST/PNL AND/PED | 4LF | Y04 |
Subtask 34-21-25-420-050-A ** ON A/C NOT FOR ALL
A. Installation of the Metric Altimeter (15FN)
(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 caps from the electrical connectors (3) and (5).
(4) Make sure that the electrical connectors are clean and in the correct condition.
(5) Connect the electrical connector (5) to the receptacle (3) of the metric altimeter (2).
(6) Remove the blanking plugs from the quick-disconnect couplings (4) and (6).
(7) Connect the quick-disconnect coupling (6) to the receptacle (4) of the metric altimeter (2).
(8) Make sure that you can see the blue ring on the quick-disconnect coupling.
(9) Pull the quick-disconnect coupling to be sure that it is correctly attached.
(10) 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).
(11) Install the metric altimeter (2) in its housing.
(12) Look behind the metric altimeter and make sure that the position of the flexible hose (static pressure line) is satisfactory (no crushing, kings, crease or folds).
(13) Tighten the screws (1).
Subtask 34-21-25-865-052-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 caps from the electrical connectors (3) and (5).
(4) Make sure that the electrical connectors are clean and in the correct condition.
(5) Connect the electrical connector (5) to the receptacle (3) of the metric altimeter (2).
(6) Remove the blanking plugs from the quick-disconnect couplings (4) and (6).
(7) Connect the quick-disconnect coupling (6) to the receptacle (4) of the metric altimeter (2).
(8) Make sure that you can see the blue ring on the quick-disconnect coupling.
(9) Pull the quick-disconnect coupling to be sure that it is correctly attached.
(10) 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).
(11) Install the metric altimeter (2) in its housing.
(12) Look behind the metric altimeter and make sure that the position of the flexible hose (static pressure line) is satisfactory (no crushing, kings, crease or folds).
(13) Tighten the screws (1).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 34-21-25-710-050-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 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 34-21-25-410-050-A ** ON A/C NOT FOR ALL
A. Put the aircraft back to its initial configuration.
(1) Install the thermoformed cover on the center instrument panel.
(2) Install the sidewall panel 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 panel 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.