Installation Manual

Events generated by the LGA-5005
4-2 Chapter 4: Maintenance 98-152675-A
Cobham Public
subjected to hail or lightning strikes (refer to the ACMM [3]). Refer to Table 4-1, below, for
information on inspection actions applicable to the LGA-5005.
Inspection tasks
4.2 Events generated by the LGA-5005
If the LGA-5005 fails, it will implement a BITE function that will report the failure to the
CSDU, which in turn will report it to the OHMF (Onboard Health Management Function).
The CSDU will log a BITE event and report the status over the CSDU Centralized Fault
Display System (CFDS) interface. This interface connects to the aircraft maintenance
system.
All BITE logs are part of the CSDU’s System log, which can be downloaded from the CSDU
USB Front Maintenance port when on the ground. Refer to:
• Airline Operational User Guidance - 99-173107 [8]
• Operational User Guidance - 99-157303 [9]
Antenna failures are part of the System logs/Diagnostic report.
For more detail on the above refer to the A200S Installation manual [6].
Inspection Action
Check that the antenna is securely fastened
to the fuselage.
Re-tighten the screws.
Check the radome for cracks, paying
particular attention to the area around the
fixing points and to the front.
Return the unit to Cobham SATCOM.
a
a. The radome can only be replaced by the manufacturer. Failure to comply with this will void all
warranties.
Check for excessive erosion or wind
ablation of the radome.
Return the unit to Cobham SATCOM.
a
Table 4-1: Inspection tasks for LGA-5005