318
14 CFR Ch. I (1–1–14 Edition)
§ 23.1449
(1) The dispensing units for pas-
sengers must be connected to an oxy-
gen supply terminal and be imme-
diately available to each occupant
wherever seated.
(2) The dispensing units for crew-
members must be automatically pre-
sented to each crewmember before the
cabin pressure altitude exceeds 15,000
feet, or the units must be of the quick-
donning type, connected to an oxygen
supply terminal that is immediately
available to crewmembers at their sta-
tion.
(e) If certification for operation
above 30,000 feet is requested, the dis-
pensing units for passengers must be
automatically presented to each occu-
pant before the cabin pressure altitude
exceeds 15,000 feet.
(f) If an automatic dispensing unit
(hose and mask, or other unit) system
is installed, the crew must be provided
with a manual means to make the dis-
pensing units immediately available in
the event of failure of the automatic
system.
(g) If the airplane is to be certified
for operation above 41,000 feet, a quick-
donning oxygen mask system, with a
pressure demand, mask mounted regu-
lator must be provided for the flight
crew. This dispensing unit must be im-
mediately available to the flight crew
when seated at their station and in-
stalled so that it:
(1) Can be placed on the face from its
ready position, properly secured,
sealed, and supplying oxygen upon de-
mand, with one hand, within five sec-
onds and without disturbing eyeglasses
or causing delay in proceeding with
emergency duties; and
(2) Allows, while in place, the per-
formance of normal communication
functions.
[Amdt. 23–9, 35 FR 6387, Apr. 21, 1970, as
amended by Amdt. 23–20, 42 FR 36969, July 18,
1977; Amdt. 23–30, 49 FR 7340, Feb. 28, 1984;
Amdt. 23–43, 58 FR 18978, Apr. 9, 1993; Amdt.
23–49, 61 FR 5170, Feb. 9, 1996; Amdt. 23–62, 76
FR 75762, Dec. 2, 2011]
§ 23.1449
Means for determining use of
oxygen.
There must be a means to allow the
crew to determine whether oxygen is
being delivered to the dispensing equip-
ment.
[Amdt. 23–9, 35 FR 6387, Apr. 21, 1970]
§ 23.1450
Chemical oxygen generators.
(a) For the purpose of this section, a
chemical oxygen generator is defined
as a device which produces oxygen by
chemical reaction.
(b) Each chemical oxygen generator
must be designed and installed in ac-
cordance with the following require-
ments:
(1) Surface temperature developed by
the generator during operation may
not create a hazard to the airplane or
to its occupants.
(2) Means must be provided to relieve
any internal pressure that may be haz-
ardous.
(c) In addition to meeting the re-
quirements in paragraph (b) of this sec-
tion, each portable chemical oxygen
generator that is capable of sustained
operation by successive replacement of
a generator element must be placarded
to show—
(1) The rate of oxygen flow, in liters
per minute;
(2) The duration of oxygen flow, in
minutes, for the replaceable generator
element; and
(3) A warning that the replaceable
generator element may be hot, unless
the element construction is such that
the surface temperature cannot exceed
100
°
F.
[Amdt. 23–20, 42 FR 36969, July 18, 1977]
§ 23.1451
Fire protection for oxygen
equipment.
Oxygen equipment and lines must:
(a) Not be installed in any designed
fire zones.
(b) Be protected from heat that may
be generated in, or escape from, any
designated fire zone.
(c) Be installed so that escaping oxy-
gen cannot come in contact with and
cause ignition of grease, fluid, or vapor
accumulations that are present in nor-
mal operation or that may result from
the failure or malfunction of any other
system.
[Doc. No. 27806, 61 FR 5170, Feb. 9, 1996]
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