Maintenance
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4.4
PREVENTIVE MAINTENANCE
4.4.1
Organisation
Preventive maintenance comprises several types of procedure:
• cleaning
• correct functioning check
• preventive replacement of sub-assemblies.
Maintenance and checking procedures are described in P sheets (see Section 4.4.2). The
P sheets themselves are described in Section 4.4.3.
Preventive replacement procedures are described in E sheets (see Section 4.5.3).
All maintenance procedures and their scheduling are listed in Table 4.8.
4.4.2
Schedule of preventive maintenance operations
FREQUENCY
DESCRIPTION OF THE OPERATION
N
°
SHEET
Annually
Visual inspection
1 year and after each
corrective
maintenance
operation
IDR IDO 3G test
Every five years
Checking the synchronisation board pilot (OCXO)
Table 4.8
SCHEDULE OF PREVENTIVE MAINTENANCE OPERATIONS
