[Code of Federal Regulations]
[Title 14, Volume 4]
[Revised as of January 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR221.54]

[Page 65]
 
                     TITLE 14--AERONAUTICS AND SPACE
 
   CHAPTER II--OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION 
                         (AVIATION PROCEEDINGS)
 
PART 221--TARIFFS--Table of Contents
 
   Subpart F--Requirements Applicable to All Statements of Fares and 
                                 Charges
 
Sec. 221.54  Fares stated in percentages of other fares; other relationships prohibited.

    (a) Fares for foreign air transportation of persons or property 
shall not be stated in the form of percentages, multiples, fractions, or 
other relationships to other fares except to the extent authorized in 
paragraphs (b), (c), and (d) of this section with respect to passenger 
fares and baggage charges.
    (b) A basis of fares for refund purposes may be stated, by rule, in 
the form of percentages of other fares.
    (c) Transportation rates for the portion of passengers' baggage in 
excess of the baggage allowance under the applicable fares may be 
stated, by rule, as percentages of fares.
    (d) Children's, infants' and senior citizen's fares, may be stated, 
by rule, as percentages of other fares published specifically in dollars 
and cents (hereinafter referred to as base fares): Provided, that:
    (1) Fares stated as percentages of base fares shall apply from and 
to the same points, via the same routes, and for the same class of 
service and same type of aircraft to which the applicable base fares 
apply, and shall apply to all such base fares in a fares tariff.
    (2) Fares shall not be stated as percentages of base fares for the 
purpose of establishing fares applying from and to points, or via 
routes, or on types of aircraft, or for classes of service different 
from the points, routes, types of aircraft, or classes of service to 
which the base fares are applicable.