Figure 3-4.—An IPB list of parts corresponding to the IPB illustration in figure 3-3.
Usable-on code. The Usable-on code (callout 9
of fig. 3-4) designates the bureau number of the aircraft
or serial number of the component on which this part
can be used. It refers to USABLE-ON CODE for a
figure. These codes are listed after the last item of the
group assembly parts list. Callout 10 is an example of
such a listing.
The line on which callout 9 of figure 3-4 appears
is for the Nose Landing Gear Shock Strut, part number
2577818-011E<F. It has a Usable-on code of A. Refer
to the Usable-on codes listing in callout 10. It indicates
that this particular nose landing gear strut assembly
can be used only on aircraft with bureau numbers of
158620 through 159637.
Q7. What are the two primary technical manuals
used by the maintenance technician to order
replacement parts?
Q8. What information is contained in the
"Introduction" of the IPB?
3-9
