AVIATION RECORDERS
COMPONENT MAINTENANCE MANUAL
AIRBUS IRIDIUM SATCOM SYSTEM
INTRODUCTION
1. GENERAL
This Component Maintenance Manual (CMM) describes the components for the Airbus
Iridium SATCOM System. The system includes a Satellite Data Unit (SDU), p/n:
228E5733-00, an SDU Configuration Module (SCM), p/n: 418E5733-00, along with an
Iridium Antenna, p/n: 009E5733-00, and Coaxial Antenna Cable assembly, p/n: 024E5733-
XX. The Airbus Iridium SATCOM System meets the performance requirements of TSO C-
159a.
The Airbus Iridium SATCOM System is designed as a maintenance-free system. The SDU,
SCM, Iridium Antenna and Coaxial Antenna Cable assembly are considered Level-1
maintenance line-replaceable units and are not field-repairable. No periodic adjustments,
calibration, or maintenance is required to maintain this system.
The Airbus Iridium
SATCOM System is considered an “ON CONDITION LRU.”
2. ACRONYMS AND ABBREVIATIONS
Table 1 defines the acronyms and abbreviations used throughout this CMM.
Table 1. Acronym Definition List
Acronym
Definition
ACARS
Aircraft Communications Addressing and Reporting System
ACP
Audio Control Panel
ADB
Address Book
AFIRS
Automated Flight Information Reporting System
ANSI
American National Standards Institute
APU
Auxiliary Power Unit
ATE
Automatic Test Equipment
ATS
Air Traffic Service
ATSU
Air Traffic Service Unit
ARINC
Aeronautical Radio Incorporated
BCD
Binary Coded Decimal
Introduction
Page 1
Jan. 21/14
23-28-01
