Learjet 60 - Normal

PROTECTIVE BREATHINGEQUIPMENT
Protective breathing equipment (PBE) is available for a crew member to
use in fighting cabin fires . The
PBE
is designed to protect the user's eyes
and
respiratory
system
from the harmful
atmosphere which may be
generated by a
cabin
fire . ThePBE is a hood wi th a visor
which is placed
over the head and seals around the neck . An oxygen-generating
canis-
ter provides breathing oxygen for the user . ThePBE is vacuum sealed
in a bag and stored in a box accessible to the crew
.
The PBE is a throw-
away
emit that must be replaced whenever the vacuum
seal has been
broken . It is imperative that the vacuum seal be maintained since
the
oxygen-generating chemicals react with moisture .
Duration of oxygen production is nominally
15
minutes depending
upon the work rate and size of the user . Useful life of a sealed PBE is 10
years from date of manufacture .
NORMAL OPERATION
Donning the PBE :
Learjet 60
There are two available carriers
for
the PBE . A portable container stored
in a
cabinet behind the cockpit or a
mounted container (normally
mounted to the aft side of the pedestal) .
1 . Removing mask from container .
a .

To open the portable container, lift the single latch on
the
cover and
lift
. Remove sealed bag from the,container . -
b .

On
the mounted container, grasp the red
access handle on
the
protective container firmly and pull forcible
to disen-
gage the cover . When the cover is removed from the
con
tainer, immediately drop it . (The vacuum sealed bag, does
not
need to
be
removed
from
the
container
to open .) The
packaged unit may be removed from the stowage container
rior to opening and carried to a remote location for use .
2 . To remove the
PBE
from
the
vacuum sealed bag, locate the red
I .D . tag and . pull sharply to tear open the vacuum
sealed bag .
Reach into the opened vacuum-sealed bag and firmly grasp,
the
PBE . Pull the PBE straight out of the bag . If necessary hold the
bag
with the opposite hand
.
3
. Place both . hands inside the neckseal opening with patens
facing
each other and PBE visor facing downward with the
oxygen-
generating canister resting on the tip of the hands .
4 . With the head bent forward, guide the PBE neckseal over the
top of
the head and
down over the face using the hands to
shield
the face
and glasses from the
oronasal mask cone .
7-10

PM-123
Change 4