§ 101-41.214-2 - Factual support of charges billed.

(a) Documentary evidence of facts other than those shown on the GTR or other authorized procurement document, necessary to support or explain charges billed shall refer to the number of the GTR or other document involved, be associated therewith, and made a part of the billing record. Certifications or affidavits, section 10721 quotations, charter orders, air ferry or live mileage supports, bus deadhead mileage supports, transfer checks, and authorizations are examples of such documents.

(b) The pertinent excess baggage coupon from the GEBAT set shall be furnished in support of charges billed for the air excess baggage service furnished for each portion of a journey.

(c) Each bill submitted by a carrier for the payment of charges for Government-financed passenger transportation services involving, in whole or in part, the use of a foreign-flag air carrier or vessel shall be supported by a certification explaining the nonavail-ability of U.S.-flag service, which shall be signed by the traveler or other responsible official of the agency authorizing such use. (See 4 CFR 52.2.)