Adjustment of the SELCAL Code

TASK 23-51-00-820-801-A
Adjustment of the SELCAL Code

ZONE: 128

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
128	REAR AVIONIC COMPARTMENT
824

C. Referenced Information

REFERENCE	DESIGNATION
TASK 23-51-00-710-002-A	Operational Test of the SELCAL System
TASK 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
TASK 52-41-00-410-002-A	Close the Avionics Compartment Doors after Access

3. Job Set-up
Subtask 23-51-00-010-057-A

A. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 824 in the zone 128.
(2) Open the access door 824 (Ref. AMM TASK 52-41-00-010-002).

4. Procedure
Subtask 23-51-00-820-050-A

A. Adjustment of the SELCAL Code
(1) Open the plexiglass board of the SELCAL code panel.
(2) On the front face of the SELCAL code panel, turn the four knurled knobs to get the new SELCAL code.
(3) Close the plexiglass board of the SELCAL code panel.

Subtask 23-51-00-710-066-A

B. Do the operational test of the SELCAL system (Ref. AMM TASK 23-51-00-710-002).

5. Close-up
Subtask 23-51-00-410-057-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access door 824 (Ref. AMM TASK 52-41-00-410-002).
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.02 06:12:16 UTC