[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: 49CFR175.700]

[Page 740]
 
                        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.  175.700  Special limitations and requirements for Class 7 materials.

    (a) Except as provided in Sec.  Sec.  173.4, 173.422 and 173.423 of 
this subchapter, no person may carry any Class 7 materials aboard a 
passenger-carrying aircraft unless that material is intended for use in, 
or incident to research (See Sec.  171.8 of this subchapter), medical 
diagnosis or treatment. Regardless of its intended use, no person may 
carry a Type B(M) package aboard a passenger-carrying aircraft, a vented 
Type B(M) package aboard any aircraft, or a liquid pyrophoric Class 7 
material aboard any aircraft.
    (b) Limits for transport index and criticality safety index. A 
person may carry the following Class 7 (radioactive) materials aboard an 
aircraft only when--
    (1) On a passenger-carrying aircraft--
    (i) Each single package on the aircraft has a transport index no 
greater than 3.0;
    (ii) The combined transport index and the combined criticality index 
of all the packages on the aircraft are each no greater than 50.
    (2) On a cargo aircraft--
    (i) Each single package on the aircraft has a transport index no 
greater than 10.0.
    (ii) The combined transport index of all the packages on the 
aircraft is no greater than 200, and the combined criticality index of 
all the packages on the aircraft is no greater than--
    (A) 50 on a non-exclusive use cargo aircraft, or
    (B) 100 on an aircraft assigned for the exclusive use of the shipper 
[offeror] for the specific shipment of fissile Class 7 material. 
Instructions for the exclusive use must be developed by the shipper 
[offeror] and carrier, and the instructions must accompany the shipping 
papers.
    (3) The combined transport index and combined criticality index are 
determined by adding together the transport index and criticality index 
numbers, respectively, shown on the labels of the individual packages.
    (c) No person may carry in a passenger-carrying aircraft any package 
required to be labeled RADIOACTIVE YELLOW-II or RADIOACTIVE YELLOW-III 
label unless the package is carried on the floor of the cargo 
compartment or freight container.