[Code of Federal Regulations] [Title 49, Volume 2] [Revised as of October 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR175.501] [Page 738] 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 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. Effective Date Notes: 1. At 72 FR 4456, Jan. 31, 2007, Sec. 175.501 was revised, effective Oct. 1, 2007. For the convenience of the user, the added and revised text is set forth as follows: [[Page 739]] [Page 739] 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. Except for Oxygen, compressed, no person may load or transport a hazardous material for which 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, 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. (c) 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 (e) of this section. (d) 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 1000 L (34 cubic feet) or less of oxygen--may be carried in a Class B aircraft cargo compartment or its equivalent. (e) 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 (e); (2) The rated capacity of each cylinder may not exceed 1,000 L (34 cubic feet); (3) Each cylinder must conform to the provisions of this subchapter and be placed in: (i) An outer packaging that conforms to the performance criteria of Air Transport Association (ATA) Specification 300 for a Category I Shipping Container; or (ii) A metal, plastic or wood outer packaging that conforms to a UN standard at the Packing Group I or II performance level. (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 (e) are not subject to-- (i) Sections 173.302(f) and 173.304a(f) of this subchapter, subpart C of part 172 of this subchapter, 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. 2. At 72 FR 55099, Sept. 28, 2007, the effectiveness of the amendment at 72 FR 4456, Jan. 31, 2007 was delayed until Oct. 1, 2008. 3. At 72 FR 55099, Sept 28, 2007, (e)(5)(i) was revised effective Oct. 1, 2008. For the convenience of the user, the added and revised text is set forth as follows: [Page 739] 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. * * * * * (e) * * * (5) * * * (i) Sections 173.302(f) and 173.304(f) of this subchapter, subpart C of part 172 of this subchapter, and, for passengers only, subpart H of part 172 of this subchapter; * * * * *