Figure 3-3.An IPB illustration of a nose landing gear system from a group assembly parts list.
maintenance personnel remove hardware from an
item, screws, nuts, or bolts become stripped. This is
when you should order the quantity that needs
In callout 6, the abbreviation REF (reference)
indicates that the part is listed for reference purposes
only. In these cases, the nomenclature in the
description column is followed by the notation "SEE
FIG X-XX FOR REQ," as shown in callout 7 of figure
3-4. This notation is used to reference an item to
another figure for the next higher assembly and
required units per assembly.
CAGE. This term (callout 8 in fig. 3-4) is the
five-digit Commercial and Government Entity code,
commonly known as the manufacturers code. CAGE
code 55284 is the number for the specific manufacturer
of this part.