Installation of the Weather Radar Transceiver

TASK 34-41-33-400-802-A
Installation of the Weather Radar Transceiver

ZONE: 121
FIN: 1SQ1 ** ON A/C NOT FOR ALL
FIN: 1SQ2 ** 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 1M(3 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
121	AVIONICS COMPARTMENT
811

C. Referenced Information

REFERENCE	DESIGNATION
TASK 34-41-00-740-002-A	BITE Test of the Weather Radar
Weather Radar Transceiver ** ON A/C NOT FOR ALL
Weather Radar Transceiver ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 34-41-33-860-057-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position below access door 811.
(2) Make sure that access door 811 is open.

Subtask 34-41-33-865-070-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	COM NAV/RADAR/1	5SQ1	K13
** ON A/C NOT FOR ALL
121VU	COM NAV/RADAR/2	5SQ2	K14

4. Procedure
Subtask 34-41-33-420-052-A ** ON A/C NOT FOR ALL

A. Installation of the Weather Radar Transceiver
(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 (5).
(4) Make sure that the electrical connectors (5) are clean and in the correct condition.
(5) Put the weather radar transceiver (1) in position on its rack (4).
(6) Push the weather radar transceiver (1) on its rack (4) to connect the electrical connectors (5).
(7) Engage the nuts (3) on the lugs (2) and tighten them.

Subtask 34-41-33-865-071-A ** ON A/C NOT FOR ALL

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	COM NAV/RADAR/1	5SQ1	K13
** ON A/C NOT FOR ALL
121VU	COM NAV/RADAR/2	5SQ2	K14

Subtask 34-41-33-740-052-A ** ON A/C NOT FOR ALL

C. Do the BITE test of the weather radar
(Ref. AMM TASK 34-41-00-740-002).

5. Close-up
Subtask 34-41-33-410-052-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close access door 811.
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.02 07:15:07 UTC