the organizational level, the only maintenance
performed on SE is servicing and preoperational
inspections. All functions relating to minor
adjustments, removal and replacement of minor
parts, periodic inspections, and removal and
replacement of components are performed at the
intermediate level. The IMAs have intermediate
maintenance responsibility for all SE that is
checked out on a subcustody basis.
Sets of maintenance requirements cards
(MRCs) have been developed for each major type
of SE to make inspections and repairs easier.
These card sets are continually being refined and
updated because of SE maintenance experience.
By following the sequence found in the card sets,
the minimum inspection requirements of the
equipment are satisfied. MRCs specify the
requirements for preoperational inspections
performed by the supporting ship or station
aircraft intermediate maintenance department.
An accurate maintenance history and custody/
subcustody record on each unit of SE for which
MRCs are provided requires the maintenance of
a number of maintenance and custody records.
These records are discussed below.
SE PREOPERATIONAL RECORD
The SE Preoperational Record (OPNAV
4790/52) (fig. 4-42) is maintained on the VIDS
board, cardex, or filing container held by the work
center responsible for performing preoperational
inspections. The activity having the physical
custody of the SE is responsible for making the
required entries. Entries are made to reflect all
preoperational inspections performed. This form
is also used when issuing or receiving SE on a
subcustody basis. A new card is issued by the
reporting custodian when the card in use has been
filled. The completed forms are filed for 1 month.
SE CUSTODY AND MAINTENANCE
The SE Custody and Maintenance History
Record, OPNAV 4790/51 (fig. 4-43), is used to
Figure 4-42.-SE Preoperational Record, OPNAV 4790/52.