AVIATION RECORDERS
COMPONENT MAINTENANCE MANUAL
AIRBUS IRIDIUM SATCOM SYSTEM
Ref. Document Number Description
•
RTCA/DO-160G
Environmental Conditions and Test Procedures for Airborne
Equipment
•
RTCA/DO-214
Audio Systems Characteristics and Minimum Operational
Performance Standards for Aircraft Audio Systems and
Equipment
•
RTCA/DO-262A
Minimum Operational Performance Standards for Avionics
Supporting Next Generation Satellite Systems (NGSS)
•
TIA/EIA-422-B
Electrical Characteristics of Balanced Voltage Digital Interface
Circuits
4. MAINTENANCE PHILOSOPHY
The Model Airbus Iridium SATCOM System line replaceable units (LRUs), consisting of the
SDU and SCM, are considered
“ON CONDITION LRUs”
and are designed as
maintenance-free units. The SDU and SCM are considered Level-1 maintenance units and
are not field-repairable.
The bench testing and repair of circuit card assemblies (CCAs) containing surface mount
technology (SMT) devices require specialized factory equipment, training, and techniques.
These assemblies are not field-repairable while the unit is under the warranty period. As a
result, during the unit’s warranty period, the Airbus Iridium SATCOM System maintenance
philosophy is replacement of failed LRU. If an LRU failure occurs, the LRU is to be
returned to L-3Com for testing, fault isolation, and repair.
The L-3Com Repair Station has been given authority to repair, modify, and bench test for
return to service all Airbus Iridium SATCOM System LRUs using L-3Com Factory ATP
procedures. Repair, modification, and/or recertification of Airbus Iridium SATCOM System
LRUs as per ATP procedure are limited to the L-3Com Repair Station.
In turn, the operator will receive a certified Return-To-Service unit to be reinstalled into the
aircraft or as a replacement for a spare unit. Attempts to repair any components of the
Airbus Iridium SATCOM System or the LRU will void the warranty.
Refer to the Airbus Iridium SATCOM System Installation manual, p/n: 165E5733-00 for
detailed instructions for on-aircraft installation, removal and operation.
Introduction
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Jan. 21/14
23-28-01
