Honeywell RESCU 406AFN Component Maintenance Manual With Illustrated Parts List page 80

4. Effect Code
The EFFECT CODE column of the detailed parts list is used only when more than one LRU (or
assembly/subassembly) is being shown in the same listing. Where applicable, an alpha code (A, B, C,
etc.) is used to show that particular item as being used only on that particular LRU (or assembly/
subassembly). Where no code letter appears in the EFFECT CODE column, that particular item is
used on all of the LRUs (assemblies/subassemblies) covered in that listing. Where applicable, an
explanation of EFFECT CODE appears at the beginning of the listing to which it pertains. Note the
EFFECT CODE is peculiar to its own listing. For example, code letter A in the listing for Figure 1 would
not have the same meaning as code letter A in the listing for Figure 2.
5. Units per Assembly
The UNITS PER ASSY column of the detailed parts list shows the number of units of that particular
item which are used at that particular assembly/subassembly. For bulk items, the letters AR indicate
"as required". The letters RF indicate that the item is listed for reference purposes. The letters NP
indicate that the item is nonprocurable.
6. Total Required
The TOTAL REQ'D column of the numerical index multiplies the data provided in the UNITS PER
ASSY column of the detailed parts list by the number of identical assemblies/subassemblies contained
by a component assembly (i.e., end item covered by the Illustrated Parts List of a Component
Maintenance Manual).
7. Parts Interchangeability Data
The interchangeability relationship between parts is identified in the DESCRIPTION column of the
detailed parts list. The following tabulation explains the various terms that may be used:
TERM
Optional
Alternate
Superseded by
Supersedes
Replaced by
Replaces
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COMPONENT MAINTENANCE MANUAL
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ABBREVIATION
OPT This part is optional to and interchangeable with
other parts in the same item number variant group, or
other item number is designated.
ALTN PN Self-explanatory. The only distinction between the
terms ALTN PN and OPT is that ALTN PN is used to
signify that the alternate item may be incorporated at
original manufacture.
SUPSD BY The part in the part number column is replaced by
and is not interchangeable with the item number
shown in the notation.
SUPSDS The part in the part number column replaces and is
not interchangeable with the item number shown in
the notation.
REPLD BY The part in the part number column is replaced by
and interchangeable with the item number shown in
the notation.
REPLS The part in the part number column replaces and is
interchangeable with the item number.
DEFINITION
23-24-02
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Oct 27/06