ATN 3 manual Preventive Maintenance Checks and Services for ATN NVM-14

6-1 PREVENTIVE MAINTENANCE

Table 6.1 Preventive Maintenance Checks and Services for ATN NVM-14

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