(a) Claimants must comply with the following before presenting claims involving a carrier or insurer:

(1) Whenever property is damaged or lost while being shipped pursuant to authorized travel orders, the owner must file a written claim for reimbursement with the carrier according to the terms of its bill of lading or contract before submitting a claim against the Government. The claimant may present a claim to the Government immediately after making demand on the carrier.

(2) Whenever property which is damaged or lost incident to the claimant's service is insured in whole or in part, the claimant must make a written demand against the insurer for reimbursement under the terms and conditions of the insurance coverage. Such demand should be made within the time limit provided in the policy and prior to the filing of a claim against the Government. The claimant may present a claim to the Government immediately after making demand on the insurer.

(b) If the claimant fails to make the required demand on the carrier or insurer or make reasonable efforts to collect the amount recoverable, the amount payable under the provisions of these regulations shall be reduced by the maximum amount recoverable. However, no deduction will be made if the circumstances of the claimant's service were such as to preclude timely filing of the claim with the carrier or insurer and it is determined that a demand would have been impracticable or unavailing in any event.

(c) When a claim is paid by OPM, the claimant will assign to the United States, to the extent of any payment on the claim accepted by claimant, all rights, title, and interest in any claim against any carrier, insurer, or other party arising out of the incident on which the claim against the United States is based. On request, the claimant also will furnish such evidence as may be required to enable the United States to enforce the claim.

(d) After payment of a claim by the United States, if the claimant receives any payment from a carrier, contractor, insurer, or other third party, the claimant will pay the proceeds to the United States to the extent of the payment received by the claimant from the United States.