formance, reliability, maintenance, operational char-
The four types of field changes are shown in table
acteristics, and/or safety.
The type designator indicates the completeness
The three classes of field changes are described
of the change package. Some packages contain all
in table 2-7. The class designator indicates the activity
necessary instructions, parts, and tools, whereas other
responsible for the funding and installation of the field
packages contain only instructions.
Table 2-6.-Field Change Descriptions
Table 2-7.-Field Change Classes