Remove Weather Radar Transceiver Mounting Tray Filter for Cleaning

TASK 34-41-00-100-801-A
Remove Weather Radar Transceiver Mounting Tray Filter for Cleaning

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

1. Reason for the Job
MPD 344100-02
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)
No specific	AR	BRUSH - BRISTLED, SOFT
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WATER - SOAPY SOLUTION

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08ACA1)	Aqueous Cleaner-Aircraft Interior - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
811

D. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 34-41-33-000-004-A	Removal of the Weather Radar Transceiver
TASK 34-41-33-400-003-A	Installation of the Weather Radar Transceiver
Filter of the Double Mounting Tray of the Weather Radar Transceiver

3. Job Set-up
Subtask 34-41-00-860-068-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 34-41-00-010-053-A ** ON A/C NOT FOR ALL

B. Get access to the avionics compartment.
(1) Put the ACCESS PLATFORM 2M (6 FT) in position at the access door 811.
(2) Open the access door 811.

Subtask 34-41-00-865-063-A ** ON A/C NOT FOR ALL

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

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

4. Procedure
Subtask 34-41-00-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Filter Assembly
(1) Remove the weather radar transceiver (Ref. AMM TASK 34-41-33-000-004).
(2) Remove the knobs (1) from the filter assembly (2).
(3) Remove the filter assembly (2) from the mounting tray.

Subtask 34-41-00-100-051-A ** ON A/C NOT FOR ALL

B. Cleaning of the Filter
(1) If you find stains of mud, dirt or dust on the filter assembly:

Use a BRUSH - BRISTLED, SOFT to clean it with WATER - SOAPY SOLUTION.
Use a lint-free cloth Textile-Lint free Cotton - (Material No.14SBA1) to clean it with Aqueous Cleaner-Aircraft Interior - - (Material No.08ACA1) .

(2) If you find stains of oil or grease on the filter assembly:

Use Textile-Lint free Cotton - (Material No.14SBA1) to clean it with Aqueous Cleaner-Aircraft Interior - - (Material No.08ACA1) .

(3) If you find marks or dust on the filter assembly:

Do steps (1) and (2) again with a piece of moist Textile-Lint free Cotton - (Material No.14SBA1) .
Do these steps again until the part is fully clean.

(4) Wash the filter in a container filled with WATER - SOAPY SOLUTION
(5) Dry the filter and remove all moisture with a clean dry air supply.

Subtask 34-41-00-420-050-A ** ON A/C NOT FOR ALL

C. Installation of the Filter Assembly
(1) Install the filter assembly (2) on the mounting tray.
(2) Install the knobs (1) on the filter assembly (2) and tighten them.
(3) Install the weather radar transceiver (Ref. AMM TASK 34-41-33-400-003).

5. Close-up
Subtask 34-41-00-865-065-A ** ON A/C NOT FOR ALL

A. 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

Subtask 34-41-00-410-053-A ** ON A/C NOT FOR ALL

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

Subtask 34-41-00-860-070-A ** ON A/C NOT FOR ALL

C. Put the aircraft back to its initial configuration.
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.02 06:23:21 UTC