14 C.F.R. § 142.27 – Display of certificate.

(a) Each holder of a training center certificate must prominently display that certificate in a place accessible to the public in the principal business office of the training center.
(b) A training center certificate and training specifications must be made available for inspection upon request by—
1. (1) The Administrator;
2. (2) An authorized representative of the National Transportation Safety Board; or
3. (3) Any Federal, State, or local law enforcement agency.