[Code of Federal Regulations] [Title 48, Volume 4] [Revised as of October 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 48CFR316.603-71] [Page 49-50] TITLE 48--FEDERAL ACQUISITION REGULATIONS SYSTEM CHAPTER 3--HEALTH AND HUMAN SERVICES PART 316_TYPES OF CONTRACTS--Table of Contents Subpart 316.6_Time-and-Materials, Labor-Hour, and Letter Contracts Sec. 316.603-71 Approval for modifications to letter contracts. All letter contract modifications (amendments) must be approved one level above the contracting officer. Request for authority to issue letter contract modifications shall be processed in the same manner as requests for authority to issue letter contracts and shall include the following: (a) Name and address of the contractor. (b) Description of work and services. (c) Date original request was approved and indicate approving official. (d) Letter contract number and date issued. (e) Complete justification as to why the letter contract cannot be definitized at this time. (f) Complete justification as to why the level of funding must be increased. (g) Complete justification as to why the period of effectiveness is increased beyond 180 days, if applicable. [[Page 50]] (h) If the funding of the letter contract is to be increased to more than 50 percent of the estimated cost of the acquisition, the information required by 316.603-70(j) must be included.