B/E AEROSPACE
COMPONENT MAINTENANCE MANUAL
4521
Page 10005
26 May 2015
25-34-80
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TASK 25-34-80-990-814-A01
5.
Parts Replacement Data
Interchangeability relationship between parts is identified in the ‘NOMENCLATURE” column. A list of terms
used and their definition is as follows.
TERM
ABBREVIATION
DEFINITION
Alternate
ALT
Part fully meets functional and structural specifications, but differs
either in overall external dimensions, connection installation, and/or
mounting provisions, and may require additional rework or
modifications to install in a specific application.
Optional
OPT
The part is fully interchangeable in form, fit, and function with other
item numbers shown.
Preferred
PRFD
Part is preferred over the other optional parts shown.
Replaced By
REPLD BY
Part is replaced by and is interchangeable with item number listed in
notation.
Replaces
REPLS
Part replaces and is interchangeable with number listed in notation.
Superseded By SUPSD BY
Part is replaced by and is not interchangeable with item number
listed in notation.
Supersedes
SUPSDS
Part replaces and is not interchangeable with item number listed in
notation.
Service
Bulletins
PRE SB
POST SB
RWK SB
Identifies when a service bulletin (SB) has an effect on a part. PRE
shows the condition of the part before the work in the service bulletin
is done; POST shows the condition after the work is done; RWK
shows that the part is reworked by the service bulletin.
