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Figure 2-7. Mouth inflation valve.
Chapter 3. MAINTENANCE INSTRUCTIONS
TM-5-4220-201-12 Life Preserver Underarm Parachutist Type B-7 Coinflated FSN 4220- 657-2197 Manual
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TM
5-4220-201-12
b.
Cells
must
be
completely
deflated
to
prevent
the
remaining
gas
from
expanding
at
high
altitudes,
which
may
force
the
containers
open,
also,
completely
deflated
cells
are
easier
to
pack.
2-10
