[Code of Federal Regulations] [Title 41, Volume 4] [Revised as of July 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 41CFR301-10.123] [Page 27-28] TITLE 41--PUBLIC CONTRACTS AND PROPERTY MANAGEMENT CHAPTER 301--TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES PART 301-10--TRANSPORTATION EXPENSES--Table of Contents Subpart B--Common Carrier Transportation Sec. 301-10.123 When may I use first-class airline accommodations? Only when your agency specifically authorizes/approves your use of first-class accommodations under paragraph (a) through (d) of this section. (a) No other coach-class or premium-class other than first-class accommodation is reasonably available. ``Reasonably available'' means available on an airline that is scheduled to leave within 24 hours of your proposed departure time, or scheduled to arrive within 24 hours of your proposed arrival time. (b) When use of first-class is necessary to accommodate a disability or other special need. A disability must be substantiated in writing by a competent medical authority. A special need must be substantiated in writing according to your agency's procedures. [[Page 28]] If you are authorized under Sec. 301-13.3(a) of this chapter to have an attendant accompany you, your agency also may authorize the attendant to use first-class accommodations if you require the attendant's services en route. (c) When exceptional security circumstances require first-class travel. Exceptional security circumstances are determined by your agency and include, but are not limited to: (1) Use of other than first-class accommodations would endanger your life or Government property; (2) You are an agent on protective detail and you are accompanying an individual authorized to use first-class accommodations; or (3) You are a courier or control officer accompanying controlled pouches or packages. (d) When required because of agency mission. Note to Sec. 301-10.123: You may upgrade to first-class at your personal expense, including through redemption of frequent flyer benefits. [FTR Amdt. 70, 63 FR 15955, Apr. 1, 1998, as amended by FTR Amdt. 104, 67 FR 17947, Apr. 12, 2002]