parties. The light emits a constant, high-intensity light
that is visible for many miles, and it has an operational
life of 8 continuous hours. The light is a small, compact
unit consisting of a lens, connector wire, and
powerpack. The light is attached near the top right side
of the flotation assembly to provide maximum
visibility. The powerpack hangs below the light to
ensure contact with water. To activate the powerpack,
pull the "pull to light" plug.
DYE MARKER. The dye marker (fig. 11-14) is a
chemical that turns water brilliant green. It is used to
attract the attention of rescue aircraft. The dye stays
strongly visible for 20 to 30 minutes and may cease to
be a good target after an hour, depending on sea state
and ocean current. It is visible at an approximate
distance of 11 miles at 3,000 feet altitude. If rapid
dispersion of dye is desired, agitate the container in the
water. To open the dye marker, grasp the material at the
top of the packet between the fingers and the palm of
the hand. Tear the pull tab.
LIFE PRESERVER UNIT (LPU)
The LPU assembly (fig. 11-15) is used by naval
aircraft
crew
members.
It
is
designed
as
a
constant-wear item for use with and attached to the
SV-2 series survival vest. It will not interfere with
removal of the quick-fit parachute harness. The
assembly consists of a two-chambered flotation
assembly, a casing assembly, and optional survival
items and pouches.
Flotation Assembly
The flotation assembly (fig. 11-16) is constructed
of polychloroprene-coated nylon cloth and consists of
two independent flotation chambers sewn together at
the collar. These chambers are inflated by CO2 inflation
assemblies or by the oral inflation tubes on each waist
lobe.
Each waist lobe is equipped with an attachment
patch used for securing the casing assembly. The right
11-11
ANf1115
Figure 11-15.—LPU life preserver assembly.
CO
INFLATION
ASSEMBLY
2
ORAL INFLATION
TUBE
SURVIVAL ITEM
POUCH
FLOTATION
ASSEMBLY
WAIST LOBE
SNAP HOOK
ANf1116
Figure 11-16.—Flotation assembly (inflated).
