Removal of the Top Antenna

TASK 23-28-13-000-001-A
Removal of the Top Antenna

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

ZONE: 222
ZONE: 230
FIN: 116RV1 ** 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 6M (20 FT)
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	SCRAPER - NON METALLIC
No specific	1	TAPE - MASKING

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
Top Antenna

3. Job Set-up
Subtask 23-28-13-865-069-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
121VU	SATCOM	102RV1	K01

Subtask 23-28-13-941-050-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put the ACCESS PLATFORM 6M (20 FT) in position at zone 230.

4. Procedure
Subtask 23-28-13-020-057-C ** ON A/C NOT FOR ALL

A. Removal of the Antenna

Top Antenna ** ON A/C NOT FOR ALL

WARNING: BE CAREFUL WHEN YOU REMOVE OR INSTALL THE ANTENNA. THE ANTENNA WEIGHS APPROXIMATELY 12 KG (26 LBS). IF YOU DO NOT HOLD IT CORRECTLY, IT CAN FALL AND CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE.

(1) Remove the sealant from the screw heads with a SCRAPER - NON METALLIC.
(2) Remove the screws (1) from the antenna (2).
(3) Lift the antenna (2) until you can see the electrical connector (3) and the coaxial connectors (4).

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(4) Remove and discard the lockwire from the coaxial connectors (4).
(5) Disconnect the electrical connector (3) and the coaxial connectors (4) from the antenna (2).
(6) Remove the three O-rings (5).

NOTE: If the O-rings are in good condition, you can keep them for the subsequent installation.

(7) Apply TAPE - MASKING around the electrical connector (3) and attach it to the fuselage.
(8) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(9) Remove the antenna (2).

[Rev.9 from 2019] 2026.04.01 04:04:23 UTC