Installation of the Protective Shields - FR1

TASK 53-11-41-400-001-A
Installation of the Protective Shields - FR1

CAUTION: DO NOT USE THE LOCALIZER ANTENNA AT THE BOTTOM OF THE RADOME AS A SUPPORT.

ZONE: 110

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

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
110	RADOME (NOSE CONE TO FR 1)
110AL

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 34-41-41-400-001-A	Installation of the Wave Guide Assembly
TASK 53-15-11-010-001-A	Opening of the Radome
TASK 53-15-11-410-001-A	Closing of the Radome
Upper Protective Shield
Lower Protective Shields

3. Job Set-up
Subtask 53-11-41-860-050-A

A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE is in position below the radome in the zone 110.

WARNING: DO NOT OPEN THE RADOME IF THE WIND SPEED IS MORE THAN 25 KNOTS.

(3) Make sure that the radome 110AL is open (Ref. AMM TASK 53-15-11-010-001).

Subtask 53-11-41-865-051-A

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

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

4. Procedure
Subtask 53-11-41-420-050-C

A. Installation of the Protective Shields

Upper Protective Shield

Lower Protective Shields

(1) Put the shields (1), (4) and (5) in position.
(2) Install the screws (3) and the washers (2).
(3) Tighten the screws (3).

5. Close-up
Subtask 53-11-41-865-052-A

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

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

Subtask 53-11-41-410-050-A

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the wave guide assembly (Ref. AMM TASK 34-41-41-400-001).
(3) Close the radome 110AL (Ref. AMM TASK 53-15-11-410-001).
(4) Remove the access platform(s).
(5) Remove the WARNING NOTICE(S).

Subtask 53-11-41-862-050-A

C. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001)

[Rev.10 from 2021] 2026.04.02 06:28:49 UTC