Removal of the Mounting Base of the Top Antenna

TASK 23-28-13-000-003-A
Removal of the Mounting Base of the Top Antenna

ZONE: 222
ZONE: 230

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 4M (13 FT)-ADJUSTABLE
No specific	1	ACCESS PLATFORM 6M (20 FT)
No specific	1	SCRAPER - NON METALLIC

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
222	FWD CAB UTILITY AREA
230	FWD PASSENGER COMPARTMENT
841

C. Referenced Information

REFERENCE	DESIGNATION
TASK 23-28-13-000-001-A	Removal of the Top Antenna
TASK 25-23-41-000-001-A	Removal of the Ceiling Panels
Antenna Mounting Base

3. Job Set-up
Subtask 23-28-13-010-050-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Put the ACCESS PLATFORM 6M (20 FT) in position at Zone 230.
(2) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position at access door 841 in zone 222.
(3) Open access door 841.

4. Procedure
Subtask 23-28-13-020-054-A ** ON A/C NOT FOR ALL

A. Removal of the Mounting Base

Antenna Mounting Base ** ON A/C NOT FOR ALL

(1) Remove the top antenna (116RV1) (Ref. AMM TASK 23-28-13-000-001).
(2) In the FWD cabin, remove ceiling panels 231EC, 231FC, 231CG between FR29 and FR35 (Ref. AMM TASK 25-23-41-000-001).
(3) Remove the sealant from the screws (1) with a SCRAPER - NON METALLIC.
(4) Remove the screws (1) from the mounting base (2).
(5) Remove the mounting base (2).

[Rev.9 from 2019] 2026.04.02 06:12:03 UTC