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6-1 PREVENTIVE MAINTENANCE
TABLE 6.1 PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR ATN NVM-14
Item
No.
Interval
Location Item to
Check/Service
Procedure
Not Fully Mission
Capable If
1. Before Maintenance
• Open carrying case, inventory items
and check records for 180-day services
completed.
• Previously recorded faults on mainte-
nance records.
Not Current.
Fault not corrected.
MONOCULAR
2. Before/After
Optical
Surfaces
Inspect lens for dirt, fingerprint residue,
chips, or cracks. If necessary, clean
and dry lens with water and lens tissue.
Scratches or chips
hinder vision with
monocular turned on,
or if cracks are present.
3. Before/After
External
Surfaces
Inspect for cracks or damage.
Scratches and gouges are OK if opera-
tion is not affected
Cracked or damaged.