41 CFR § 301-71.302
For how long may we issue a travel advance?
June 9, 2020
You may issue a travel advance for a reasonable period not to exceed 45 days.
[FTR Amdt. 70, 63 FR 15974, Apr. 1, 1998. Redesignated by FTR Amdt. 108, 67 FR 57967, Sept. 13, 2002]