Figure 7-16.Module Service Record (OPNAV 4790/135).
Once the module is installed in a particular
propulsion system, this record is maintained
concurrently with, and becomes part of, the propulsion
Assembly Service Record (ASR) (OPNAV
The ASR (fig. 7-17) is a two page form that
provides data tracking on assemblies. Items that
require an ASR are items with rework or overhaul life
limits and subassemblies designated to be removed by
any organization and discarded.
Equipment History Record (EHR) Card
The EHR card (fig. 7-18) is a two page form used
to record maintenance, inspections, TD compliance,
and usage data on maintenance engineering cognizant
field activity (MECFA) designated components, quick
engine change kits (QECKs), and armament
equipment. An individual card for each EHR
component is maintained as part of the aircraft
logbook, AESR, or MSR while the component is
installed in or on the aircraft. When the component is
removed, the EHR accompanies the component.
Scheduled Removal Component (SRC)
Card (OPNAV 4790/28A)
The SRC card (fig. 7-19) is used to record
maintenance history data of aeronautical components
that are (through engineering analysis) determined to
be life limited. The SRC card is used to record
maintenance history, installation, and usage data on
designated SRCs. An individual card for each SRC
item is maintained as part of the logbook, AESR,
MSR, or equipment as long as that item is installed.
When the item/component is removed from the
aircraft, the SRC card accompanies the component.