Removal of the Emergency Locator Transmitter (ELT) Antenna

TASK 25-65-14-000-001-A
Removal of the Emergency Locator Transmitter (ELT) Antenna

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

ZONE: 200
FIN: 112MX ** 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	1	SCRAPER - NON METALLIC
No specific	1	STEPLADDER 1.0 M (3.3 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
200	UPPER HALF FUSELAGE
261BC

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 25-23-42-000-002-A	Removal of the Ceiling Panels - Aft Utility Area
Antenna 112MX ** ON A/C NOT FOR ALL
Antenna 112MX ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 25-65-14-861-051-A ** ON A/C NOT FOR ALL

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 25-65-14-941-050-A ** ON A/C NOT FOR ALL

B. Get Access
(1) In the cabin:
(a) Remove ceiling panel 261BC (Ref. AMM TASK 25-23-42-000-002).
(b) Put a STEPLADDER 1.0 M (3.3 FT) in position below the antenna.
(2) At the antenna:
(a) Put an ACCESS PLATFORM 6M (20 FT) in position below the antenna.

Subtask 25-65-14-941-050-J ** ON A/C NOT FOR ALL

B. Get access to the Antenna 112MX
(1) Put the ACCESS PLATFORM 6M (20 FT) in position at the antenna.

4. Procedure
Subtask 25-65-14-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the Antenna

Antenna 112MX ** ON A/C NOT FOR ALL

(1) In the cabin:
(a) Set the toggle switch of the ELT to the OFF position.
(b) Pull the heat protective webbing a short distance down from the antenna connector (3).
(c) Disconnect the antenna connector (3) from the antenna (2).
(2) At the antenna:
(a) Remove the sealants from the heads of the screws (1) with a SCRAPER - NON METALLIC.
(b) Remove the screws (1).
(c) Carefully lift the antenna (2) away from the fuselage outer surface.
(d) Remove the antenna (2).
(e) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(f) Remove and retain the O-ring seal (4).

Subtask 25-65-14-020-051-J ** ON A/C NOT FOR ALL

A. Removal of the Antenna 112MX

Antenna 112MX ** ON A/C NOT FOR ALL

(1) Remove the sealants from the heads / of the screws (1) with a SCRAPER - NON METALLIC.
(2) Remove the screws (1).
(3) Lift the antenna (2) carefully away from the fuselage outer skin, and disconnect the connector (3) from the antenna (2).
(4) Remove the antenna (2).
(5) Put CAP - BLANKING on the disconnected electrical connectors.
(6) Remove and retain the O-ring seal (4).

[Rev.10 from 2021] 2026.04.01 04:04:34 UTC