Removal of the Very High Frequency (VHF) Transceiver

TASK 23-12-33-000-001-A
Removal of the Very High Frequency (VHF) Transceiver

ZONE: 127
ZONE: 128
FIN: 1RC1 ** ON A/C NOT FOR ALL
FIN: 1RC2 ** ON A/C NOT FOR ALL
FIN: 1RC3 ** 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	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
127	REAR AVIONIC COMPARTMENT
128	REAR AVIONIC COMPARTMENT
824

C. Referenced Information

REFERENCE	DESIGNATION
VHF Transceiver

3. Job Set-up
Subtask 23-12-33-865-050-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
FOR FIN: 1RC1 (XCVRVHF, 1)
49VU	COM/VHF/1	2RC1	G09
** ON A/C NOT FOR ALL
FOR FIN: 1RC2 (XCVRVHF, 2)
121VU	COM NAV/VHF/2	2RC2	L04
** ON A/C NOT FOR ALL
121VU	COM/VHF/2	2RC2	L04
** ON A/C NOT FOR ALL
FOR FIN: 1RC3 (XCVRVHF, 3)
121VU	COM NAV/VHF/3	2RC3	L05
** ON A/C NOT FOR ALL
121VU	COM/VHF/3	2RC3	L05

Subtask 23-12-33-010-050-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 824 in zone 128.
(2) Open the access door 824.

4. Procedure
Subtask 23-12-33-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the VHF Transceiver
(1) Loosen the nuts (3).
(2) Lower the nuts (3).
(3) Pull the VHF transceiver (5) on its rack (2), to disconnect the electrical connectors (1).
(4) Remove the VHF transceiver (5).
(5) Put CAP - BLANKING on the disconnected electrical connectors (1).

[Rev.10 from 2021] 2026.04.02 06:12:00 UTC