Yes, you may use Government aircraft to carry passengers with the following restrictions:
(a)
You may carry passengers only on aircraft that you operate or require contractually to be operated according to the rules and requirements in Federal Aviation Regulations (14 CFR chapter I).
(b)
For certain kinds of travel, your agency must justify passengers' presence on Government aircraft (see OMB Circular A-126 and the Government Aircraft Cost Accounting Guide (CAG) published by GSA for complete information on authorizing travel and analyzing costs before authorizing travel on Government aircraft).