[Code of Federal Regulations] [Title 49, Volume 2] [Revised as of October 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR175.75] [Page 692] TITLE 49--TRANSPORTATION CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 175_CARRIAGE BY AIRCRAFT--Table of Contents Subpart B_Loading, Unloading and Handling Sec. 175.75 Quantity limitations aboard aircraft. (a) Except as provided in Sec. 175.85(c)(3), no person may carry on an aircraft: (1) A hazardous material except as permitted by this subchapter; (2) More than 25 kg (55 pounds) net weight of hazardous material (and in addition thereto, 75 kg (165 pounds) net weight of Division 2.2 (non-flammable compressed gas) materials permitted to be carried aboard passenger-carrying aircraft: (i) In an inaccessible cargo compartment, (ii) In any freight container within an accessible cargo compartment, or (iii) In any accessible cargo compartment in a cargo aircraft only in a manner that makes it inaccessible unless in a freight container; (3) Packages containing Class 7 (radioactive) materials when their combined transport index number (determined by adding together the transport index numbers shown on the labels of the individual packages and/or overpacks): (i) In passenger carrying aircraft, exceeds 50.0 or, for any single package, exceeds 3.0, or (ii) In cargo aircraft only, exceeds 200.00 (for fissile Class 7 (radioactive) materials, see Sec. 175.702(b)(2)(iv)) or, for any single package, exceeds 10.0. (b) No limitation applies to the number of packages of Class 9 (miscellaneous hazardous) materials, or ORM-D materials aboard an aircraft. [Amdt. 175-1A, 41 FR 40686, Sept. 20, 1976, as amended by Amdt. 175-13, 45 FR 20101, Mar. 27, 1980; Amdt. 175-25, 47 FR 54823, Dec. 6, 1982; Amdt. 175-29, 48 FR 50461, Nov. 1, 1983; Amdt. 175-47, 55 FR 52685, Dec. 21, 1990; 66 FR 45184, Aug. 28, 2001]