EMERGENCY EQUIPMENT
Oxygen
Aircraft Operations Manual
6/2.1
PAGE
1
Apr 01/15
1.
GENERAL
The aircraft is equipped with one fixed oxygen sys-
tem, plus portable oxygen bottles.
The fixed system supplies oxygen via three cockpit
outlets to the two pilots and observer, and via cabin
outlets to the passengers.
Number of cabin outlets varies with national regula-
tions and operators specification. They are primarily
intended for giving supplemental oxygen after a de-
compression.
The portable system is intended for the flight atten-
dant, for crew walk
−
around purposes and for dis-
pensing first aid oxygen.
2.
FIXED OXYGEN SYSTEM
Oxygen bottle(s), located under the cockpit floor,
provides the system with high pressure oxygen
(approx. 1,850 psi). The oxygen flows through a
manually operated shut
−
off valve to a pressure reg-
ulator which reduces pressure to 70 psi before it is
distributed to outlets.
Each outlet gives approx. 2 l oxygen per minute.
(Number of bottles varies with national regulations
and operators specifications).
The oxygen bottle(s), which is made of metal with
an over
−
wrapping of Kevlar fiber sealed in epoxy,
has a relief plug connected to an overboard dis-
charge line. The discharge line port is covered by a
green blow
−
out disk and is located on the right side
of the fuselage nose section. Absence of the disk
indicates that the bottle has been discharged.
The bottle(s) has a capacity of 1390 l and nominal
charging pressure is 1,850 psi.
The ground servicing panel is located adjacent to
the disk.
A11114
Oxygen bottle
Blow
−
out disk
OXYGEN
Fig. 1 Fixed oxygen system
−
oxygen bottle location
