the following criteria governs the accumulation
by an aircraft of an operational service month.
1. To age (accumulate operational service
months), an aircraft must be serving in an
operating tour or period and in the controlling
custody of an operating command. Aircraft in the
controlling custody of NAVAIR fleet support
activities do not age.
2. The calendar month in which an aircraft
commences tour or period does not count as an
operational service month.
3. The calendar month in which an aircraft
leaves an operating situation for standard rework
at a NAVAIR fleet support activity is counted as
an operational service month.
4. The performance of a special rework
process while in the reporting custody of an
operating command will interrupt the aging
process on aircraft serving in a period. Time in
special rework performed between operating
periods is considered nonaging time.
5. Aircraft in a nonoperating status related
to standard rework (enroute to, awaiting in, and
enroute returning to operating) do not age except
as noted in (3) above.
6. Aircraft operating on an extension continue
to age and accumulate operational service months.
See the latest edition of OPNAVINST 5442.2.
PERIOD END DATE (PED)The month
and year in which a given aircraft either ends or,
if serving in period, is expected to reach the end
of its current service period.
PERMANENT UNIT CODE (PUC)A six-
character number permanently assigned to each
reporting custodian of aircraft. The master list of
permanent unit codes is maintained by CNO.
PUCs may be obtained from CNO by the
cognizant controlling custodian for assignment
to newly formed units by correspondence,
message, or telephone. See the latest edition of
OPNAVINST 5442.2 for further clarification.
PERSONNEL QUALIFICATION STANDARDS
(PQS)PQS is a document that describes the
knowledge and skills a trainee must have to
correctly perform his/her duties. The policy and
procedures for PQS are outlined in the latest
edition of OPNAVINST 3500.34.
PRODUCTION CONTROLThe functional
organization within the IMA responsible for the
overall workload control.
PRODUCTION DIVISIONAny division in
intermediate maintenance that is responsible for
a specific production workload; for example,
avionics, power plants, etc.
QUALITY ASSURANCEA planned and
systematic pattern of all actions necessary to
provide adequate confidence that the item or
product conforms to established technical
QUICK ENGINE CHANGE (QEC)The
ability to expeditiously change an engine.
1. Quick engine change assembly (QECA)A
quick engine change kit completely assembled on
a quick engine change stand with the engine and
all accessories, less the propeller for reciprocating
2. Quick engine change kit (QECK)A kit
containing all items required for a QECA, less
government-furnished equipment (GFE), engine,
and propeller. Contractor-furnished accessories
may be deleted subject to approval by NAVAIR
when storage limitations, bulk, or their general
nature warrant such deletion. The kit, as
delivered, will be assembled, as far as practical,
compatible with packaging limitations.
3. Quick engine change stand (QECS)A
structural frame, equipped with castors and floor
locks, on which a QECA may be mounted.
READY-FOR-ISSUE (RFI) MATERIAL
Material, equipment, aircraft, and support
equipment (SE) that does not require rework of
any type, replacement of overage parts, or other
than routine preinstallation and postinstallation
condition verification prior to use. RFI items
are not necessarily new or like new, but are
functionally reliable and meet applicable
performance specifications. Any item not fitting
the above description is considered not ready for
issue or non-RFI.
REPAIRABLE ITEMA durable item that,
when unserviceable, can be economically restored
to a serviceable condition through regular repair
REPORTING CUSTODIANAn organiza-
tional unit of the lowest echelon of command
accepting responsibility (involving accountability
to CNO) for aircraft/engines, as designated either
by CNO or by the controlling custodian of the
aircraft/engine. (See the latest edition of