Night Sight Maintenance Concept.
Like other systems and equipment, the night sight has a three level
concept for maintenance.
Those levels are: Unit, intermediate
(DS/GS), and depot.
The following paragraphs will explain the
different levels, and what services each level performs.
Unit maintenance is the maintenance performed on a piece of equipment
by the using unit, and includes:
Doing checks and operator adjustments.
General cleaning of equipment.
boresight adjustment procedures (Aline night sight
with the optical sight).
Notifying direct support to perform the 180 day verification