[Code of Federal Regulations]
[Title 49, Volume 2]
[Revised as of October 1, 2006]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR175.501]

[Page 735-736]
 
                        TITLE 49--TRANSPORTATION
 
   CHAPTER I--PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, 
                      DEPARTMENT OF TRANSPORTATION
 
PART 175_CARRIAGE BY AIRCRAFT--Table of Contents
 
Subpart C_Specific Regulations Applicable According to Classification of 
                                Material
 
Sec.  175.501  Special requirements for oxidizers and compressed oxygen.

    (a) Compressed oxygen, when properly labeled Oxidizer or Oxygen, may 
be loaded and transported as provided in this section. No person may 
load or transport any other package containing a hazardous material for 
which

[[Page 736]]

an OXIDIZER label is required under this subchapter in an inaccessible 
cargo compartment that does not have a fire or smoke detection system 
and a fire suppression system.
    (b) In addition to the quantity limitations prescribed in Sec.  
175.75, cylinders of compressed oxygen must be stowed in accordance with 
the following:
    (1) No more than a combined total of six cylinders of compressed 
oxygen may be stowed on an aircraft in the inaccessible aircraft cargo 
compartment(s) that do not have fire or smoke detection systems and fire 
suppression systems.
    (2) When loaded into a passenger-carrying aircraft or in an 
inaccessible cargo location on a cargo-only aircraft, cylinders of 
compressed oxygen must be stowed horizontally on the floor or as close 
as practicable to the floor of the cargo compartment or unit load 
device. This provision does not apply to cylinders stowed in the cabin 
of the aircraft in accordance with paragraph (c) of this section.
    (3) When transported in a Class B aircraft cargo compartment (see 14 
CFR 25.857(b)) or its equivalent (i.e., an accessible cargo compartment 
equipped with a fire or smoke detection system but not a fire 
suppression system), cylinders of compressed oxygen must be loaded in a 
manner that a crew member can see, handle and, when size and weight 
permit, separate the cylinders from other cargo during flight. No more 
than six cylinders of compressed oxygen and, in addition, one cylinder 
of medical-use compressed oxygen per passenger needing oxygen at 
destination--with a rated capacity of 850 L (30 cubic feet) or less of 
oxygen--may be carried in a Class B aircraft cargo compartment or its 
equivalent.
    (c) A cylinder containing medical-use compressed oxygen, owned or 
leased by an aircraft operator or offered for transportation by a 
passenger needing it for personal medical use at destination, may be 
carried in the cabin of a passenger-carrying aircraft in accordance with 
the following provisions:
    (1) No more than six cylinders belonging to the aircraft operator 
and, in addition, no more than one cylinder per passenger needing the 
oxygen at destination, may be transported in the cabin of the aircraft 
under the provisions of this paragraph (c);
    (2) The rated capacity of each cylinder may not exceed 850 L (30 
cubic feet);
    (3) Each cylinder and its overpack or outer packaging must conform 
to the provisions of this subchapter (see Special Provision A52 in Sec.  
172.102 of this subchapter);
    (4) The aircraft operator shall securely stow the cylinder in its 
overpack or outer packaging in the cabin of the aircraft and shall 
notify the pilot-in-command as specified in Sec.  175.33 of this part; 
and
    (5) Shipments under this paragraph (c) are not subject to--
    (i) Subpart C and, for passengers only, subpart H of part 172 of 
this subchapter;
    (ii) Section 173.25(a)(4) of this subchapter; and
    (iii) Paragraph (b) of this section.