49 CFR § 1220.2
Protection and storage of records
November 18, 2020
(a) The company shall protect records subject to this part from fires, floods, and other hazards, and safeguard the records from unnecessary exposure to deterioration from excessive humidity, dryness, or lack of ventilation.
(b) The company shall notify the Board if prescribed records are substantially destroyed or damaged before the term of the prescribed retention periods.