Removal of the Metric Altimeter

TASK 34-21-25-000-001-A
Removal of the Metric Altimeter

ZONE: 211
FIN: 15FN ** ON A/C NOT FOR ALL

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	CAP - BLANKING
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
F1402369	1	EXTRACTING TOOL

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
211	COCKPIT

C. Referenced Information

REFERENCE	DESIGNATION
Metric Altimeter

3. Job Set-up
Subtask 34-21-25-865-050-A ** ON A/C NOT FOR ALL

A. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	LIGHTING/INSTL LT/MAIN INST/PNL AND/PED	4LF	Y04

Subtask 34-21-25-010-050-A ** ON A/C NOT FOR ALL

B. Remove the thermoformed cover from the center instrument panel.

4. Procedure
Subtask 34-21-25-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Metric Altimeter (15FN)
(1) Loosen the screws (1), do not remove them .
(2) Push the screws (1) to release the metric altimeter (2).
(3) Remove the metric altimeter (2) from its housing with F1402369 EXTRACTING TOOL.
(4) Disconnect the electrical connector (5).
(5) Disconnect the quick-disconnect coupling (6).
(6) Remove the metric altimeter (2).
(7) Put CAP - BLANKING on the disconnected electrical connectors (3) and (5).
(8) Put PLUG - BLANKING on the disconnected pneumatic connectors (4) and (6).

[Rev.10 from 2021] 2026.04.02 07:13:53 UTC