98-158751-C 7-1
Chapter 7
Maintenance and troubleshooting
7
This chapter has the following sections:
• Continued Airworthiness
• Helpdesk
• Software update
• To exchange an LRU
• Troubleshooting
• Returning units for repair
• Disposal of electrical and electronic equipment
7.1 Continued Airworthiness
7.1.1 General
Maintenance
Maintenance requirements and instructions for continued airworthiness of the Cobham
Aerospace Communications units in the AVIATOR 700S System are defined here.
The AVIATOR 700S System (CSDU, SCM and MCHPA) requires no periodic scheduled
servicing tasks.
The CSDU is a Line-Replaceable Unit (LRU) and constructed for factory repair only.
Defective units must be returned to the factory for investigation, repair and test.
The SCM is a Line-Replaceable Unit (LRU) and constructed for factory repair only.
Defective units must be returned to the factory for investigation, repair and test.
The MCHPA is a Line-Replaceable Unit (LRU) and constructed for factory repair only.
Defective units must be returned to the factory for investigation, repair and test.
See also the installation manual of the HGA and DLNA, refer to [8].
Note
When replacing the CSDU, it is important to leave the SCM installed in the
aircraft, because the SCM contains the aircraft-specific configuration data.
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