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|  MIL-S-18471G(AS}
d. At least 95 percent of the total maintenance actions can
be performed by maintenance personnel within the Navy
Aviation Structural Mechanic, Safety Equipment (AME) rating
at pay grade E-4 or below (or civilian equivalent).
3.2.1.9 Design for maintenance. The non-explosive mechanical subsystems
or components of the escape system shall be designed to permit functional
testing during maintenance. The ejection seat shall be designed so that its
structural portions require no inspections other than for corrosion and external
damage. Explosive operated systems shall be capable of being visually checked
for proper installation, corrosion, and external damage. The ejection seat
shall be capable of being fully safetied while performing any maintenance
action, including the replacement of cartridges. There shall be no rigging
or adjustment requirements for replacement parts. Once an escape system is
fired, none of the components shall be reused, even if repaired. Maintenance
functions to be performed at the organizational (0) and intermediate (I) level
shall be capable of being performed both ashore and afloat. The ejection seat
assembly shall be designed to be maintained and supported without the use of
a support stand. The escape system shall be designed to permit performance
of the following selected maintenance functions at the specified levels:
a. The escape system, excluding parachutes and the survival kit,
shall be designed to be maintained at the O and depot (D)
levels of maintenance. The functions to be performed at
these levels shall include, but not be limited to the
following:
(1) O level: Operational check, test and inspect; replace-
ment of subassemblies, assemblies, and components
including explosive elements.
(2) D level: Repair of repairable components and beyond
the capability of maintenance (BCM) of O level mainten-
ance; refurbishment of major assemblies, usually
during aircraft standard depot level maintenance (SDLM).
Personnel parachutes, survival kits (including the emergency
b.
oxygen systems and contents), and drogue parachutes shall be
designed to be maintained at the O and I levels of maintenance
except for hydrostatic testing of the emergency oxygen bottle*
The functions to be performed at these levels shall include,
but not be limited to, the following:
O level: Turnaround, daily, and special periodic
(1)
inspection; removal and installation of equipment,
servicing of the emergency oxygen bottle off the
aircraft.
I level: Inspect, test and repair the equipment, repack
(2)
personnel parachutes; repack drogue parachutes that are
packed in a container that is removable from the seat;
replacement of explosive elements and pyrotechnics.
D level: Hydrostatic test of the emergency oxygen bottle.
(3)
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