Official Business.
(c) Official Business. Business, in the interest of the U.S. Government, which personnel aboard an aircraft must transact with U.S. Government personnel or organizations at or near a NASA facility. The use of a NASA airfield facility by transient aircraft to petition for U.S. Government business or to obtain clearance, servicing, or other items pertaining to itinerant operations is not considered official business.
Source
14 CFR § 1204.1401
Scoping language
For the purpose of this subpart, the following definitions apply: