A waiver from any provision of this part may be made by the Director, Office of Airline Information, upon the Director's own initiative or upon submission of a written request by a carrier or group of carriers. Each request for waiver shall demonstrate that unusual circumstances warrant a departure from prescribed retention periods, procedures, or techniques, or that compliance with the prescribed requirements would impose an unreasonable burden on the carrier, and that granting the waiver would be in the public interest.
14 C.F.R. §249.10