47 CFR § 90.1023 - Records maintenance and definitions.
(a) Records maintenance. All winning bidders qualifying as small or very small businesses shall maintain at their principal place of business an updated file of ownership, revenue, and asset information, including any documents necessary to establish eligibility as a small business or very small business, as defined in § 90.1021, and/or consortium of small businesses (or consortium of very small businesses). Licensees (and their successors-in-interest) shall maintain such files for the term of the license. Applicants that do not obtain the license(s) for which they applied shall maintain such files until the grant of such license(s) is final, or one year from the date of the filing of their short-form application (FCC Form 175), whichever is earlier.