Detailed Visual Inspection of the Standby Compass Damping Fluid

TASK 34-22-23-200-001-A
Detailed Visual Inspection of the Standby Compass Damping Fluid

ZONE: 210

1. Reason for the Job
To make sure that the standby compass operates.
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

3. Job Set-up
Subtask 34-22-23-860-051-A

A. Aircraft Maintenance Configuration
(1) On the windshield center post, pull the standby compass support that you can retract from its housing.
(2) On the INT LT section of the overhead panel 25VU:

set the STBY COMPASS switch 2LF to STBY COMPASS.
Make sure that the lighting of the standby compass is on.

4. Procedure
Subtask 34-22-23-210-050-A

A. Visual Inspection of the Standby Compass
(1) Make sure that:

the support is in good condition
the standby compass is correctly attached to the support
there are no leaks.

(2) In the compass bowl, make sure that the liquid:

is clear
does not contain bubbles or sediment.

(3) Make sure that the two correction cards of the compass are on each side of the support.

5. Close-up
Subtask 34-22-23-860-052-A

A. Put the aircraft back to its initial configuration.
(1) On the INT LT section of the overhead panel 25VU:

set the STBY COMPASS switch 2LF to OFF.

(2) On the windshield center post, push the standby compass support into its housing.
(3) Put the aircraft back to the serviceable condition.

[Rev.10 from 2021] 2026.04.02 06:23:14 UTC