Removal of the Emergency Locator Transmitter (ELT)

TASK 25-65-35-000-001-A
Removal of the Emergency Locator Transmitter (ELT)

ZONE: 200
ZONE: 260
FIN: 110MX ** 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	AR	CAP - BLANKING
No specific	1	SCRAPER - NON METALLIC

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
200	UPPER HALF FUSELAGE
260	AFT CABIN UTILITY AREA
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
ELT 110MX ** ON A/C NOT FOR ALL
ELT 110MX ** ON A/C NOT FOR ALL
ELT 110MX ** ON A/C NOT FOR ALL
ELT 110MX ** ON A/C NOT FOR ALL
ELT 110MX ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 25-65-35-850-052-A ** ON A/C NOT FOR ALL

A. General
(1) The ELT owner/operator must notify the applicable COSPAS-SARSAT national authorities whenever the ELT is installed or removed from an aircraft, or if the aircraft with the ELT is transferred to another operator.

Subtask 25-65-35-850-052-K ** ON A/C NOT FOR ALL

Subtask 25-65-35-861-050-A ** ON A/C NOT FOR ALL

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

Subtask 25-65-35-861-050-K ** ON A/C NOT FOR ALL

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

Subtask 25-65-35-010-051-A ** ON A/C NOT FOR ALL

C. Get access to the ELT 110MX
(1) Remove the ceiling panel 261BC (Ref. AMM TASK 25-23-42-000-002).

Subtask 25-65-35-010-051-K ** ON A/C NOT FOR ALL

C. Get access to the ELT 110MX
(1) Remove the ceiling panel 261BC (Ref. AMM TASK 25-23-42-000-002).

4. Procedure
Subtask 25-65-35-020-050-E ** ON A/C NOT FOR ALL

A. Removal of the ELT

ELT 110MX ** ON A/C NOT FOR ALL

(1) Set the ON/OFF/ARM switch (10) to OFF.
(2) Use the SCRAPER - NON METALLIC to remove the material (14) from:

The electrical connector (8) or the programming dongle (19) (if installed)
The RCP connector (12).

(3) Carefully cut and discard the fiber-glass cord and remove the heat protection material around the external antenna connector (9).
(4) Disconnect the antenna connector (9) from the ANT connector (11).
(5) Disconnect the electrical connector (8) or programming dongle (19) (if installed) from the RCP connector (12).
(6) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(7) Carefully remove the ELT (5) from the bracket (1).
(8) If you removed the programming dongle (19) and if a maintenance dongle is available, connect the maintenance dongle.

NOTE: The maintenance dongle overrides 15 HEX code of the ELT and it prevents unwanted activation.

Subtask 25-65-35-020-050-F ** ON A/C NOT FOR ALL

A. Removal of the ELT 110MX

ELT 110MX ** ON A/C NOT FOR ALL

(1) Set the ARM/OFF/TX switch (11) to the OFF position.
(2) Disconnect the antenna connector 110MX-B (8) from the connector (10).
(3) Disconnect the electrical connector 110MX-A (7) from the connector (9).
(4) Remove the bolts (4), the washers (5) and the nuts (6).
(5) Carefully disconnect the ELT (3) from the Aircraft Identification Module (AIM) (2), and remove it from the support (1).

Subtask 25-65-35-020-050-H ** ON A/C NOT FOR ALL

CAUTION: PULL THE TOGGLE SWITCH BEFORE YOU SET IT TO THE "ON", "OFF" OR "ARMED" POSITION. IF YOU DO NOT OBEY THIS INSTRUCTION, YOU CAN CAUSE DAMAGE TO THE EMERGENCY LOCATOR TRANSMITTER.

A. Removal of the ELT

ELT 110MX ** ON A/C NOT FOR ALL

NOTE: There are different protocol settings possible for the activation/identification module:

When you select the beacon serial-number protocol-setting, the activation/identification module must stay attached to the ELT.
When you select the aircraft 24-bit address protocol-setting, the activation/identification module must stay attached to the aircraft.
This will make sure that the International Civil Aviation Organization (ICAO) code stays the same when you install an ELT.

(1) Set the toggle switch (13) to OFF.
(2) If the backup antenna (4) is installed, remove and keep it in the aircraft. This is important for the subsequent installation procedure.
(3) Carefully remove the heat protection material from the antenna connector (16).
(4) If the heat protection material is damaged, discard it.
(5) Disconnect the antenna connector (16) from the connector (14).
(6) Disconnect the electrical connector (15) from the connector (12).
(7) If you select the beacon serial-number protocol-setting for the activation/identification module (5), remove the ELT (11) together with the activation/identification module (5):
(a) Remove the screw (9) and disconnect the wire lanyard (10) from the aircraft structure (1).
(8) If you select the 24-bit address protocol-setting for the activation/identification module (5), disconnect the activation/identification module (5) from the ELT (11):
(a) Remove the screws (6) and carefully pull the activation/identification module (5) out of the ELT (11).
(b) Remove and keep the O-ring seal (8).
(c) Make sure that the activation/identification module (5) is attached with the wire lanyard (10).
(d) Make sure that the screw (9) is attached to the aircraft structure (1).
(9) Remove the bolts (3) and the washers (2).
(10) Carefully remove the ELT (11) from the support (1).

Subtask 25-65-35-020-050-K ** ON A/C NOT FOR ALL

A. Removal of the ELT 110MX

ELT 110MX ** ON A/C NOT FOR ALL

(1) Set the ARM/OFF/ON switch (9) to the OFF position.
(2) Disconnect the antenna connector (6) from the connector (7).
(3) Disconnect the electrical connector (5) from the connector (8).
(4) Remove the bolts (4) and the washers (3).
(5) Carefully remove the ELT (2) from the support (1).

[Rev.10 from 2021] 2026.04.01 04:23:52 UTC