Removal of the Satellite Data Unit (SDU)

TASK 23-28-34-000-001-A
Removal of the Satellite Data Unit (SDU)

ZONE: 128
FIN: 105RV1 ** 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 2M (6 FT) - ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
128	REAR AVIONIC COMPARTMENT
824

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
Satellite Data Unit

3. Job Set-up
Subtask 23-28-34-861-050-A ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 23-28-34-010-050-A ** ON A/C NOT FOR ALL

B. Get access to the avionics compartment.
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 824.
(2) Open the access door 824.

Subtask 23-28-34-865-067-A ** ON A/C NOT FOR ALL

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	SATCOM	102RV1	K01

4. Procedure
Subtask 23-28-34-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the SDU
(1) Loosen and lower the nuts (4).
(2) Pull the SDU (1) on its rack (3) to disconnect the electrical connector (2).
(3) Remove the SDU (1) from its rack (3).
(4) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.

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