installed. It is maintained in the same way in the
AESR as it is in the aircraft logbook. (See fig.
6-9, chapter 6.)
Inventory Record (OPNAV 4790/27A)
The Inventory Record Form is common to
both the aircraft logbook and the AESR (fig. 6-10,
chapter 6). It is used to maintain a current
inventory of all equipment or components
requiring an SRC, EHR, ASR, or MSR. Sound
maintenance practices and flight safety
considerations dictate those items, other than
mandatory, that should be recorded on this form.
Components, assemblies, or modules properly
associated with equipment requiring an AESR are
recorded in this section and NOT with airframe
components in the aircraft logbook.
At the time of repair by the IMA or rework
by the depot activity, all old Inventory Record
Forms are removed and new forms inserted in the
AESR. All pertinent data for those items that have
been installed by the equipment custodian during
the previous service period and that are not
scheduled for removal during repair or rework are
transcribed to the new form(s) to maintain proper
maintenance continuity. SRCs, EHRs, ASRs, or
MSRs installed during repair or rework are also
listed on this new form.
Scheduled Removal Component (SRC)
Card (OPNAV 4790/28A)
Maintenance history, installation, and usage
data is recorded on the SRC card. (See chapter
6, figs. 6-14 and 6-15). It is maintained as part
of the AESR as long as the component is installed.
When the component is removed from the
equipment, the card accompanies the component.
It is very important that maintenance history
continuity is maintained. The same procedures
used to maintain or adjust the SRC card in the
aircraft logbook should be used to maintain or
adjust the SRC card in the AESR.
Equipment History Record (EHR)
Card (OPNAV 4790/113)
The EHR provides a method for monitor-
ing specific maintenance data on designated
Figure 7-3.Module Service Record (page 1).