(a) Reimbursement rate. Pending the completion of the negotiation to definitize the estimated cost and fee of this letter contract, the Government shall promptly reimburse the Contractor for all allowable costs under this contract at the following rates:

(1) One hundred percent of approved costs representing payments to subcontractors under fixed-price subcontracts; provided, that the Government's payments to the Contractor shall not exceed 80 percent of the allowable costs of those subcontractors.

(2) One hundred percent of approved costs representing cost- reimbursement subcontracts; provided, that the Government's payments to the Contractor shall not exceed 85 percent of the allowable costs of those subcontractors.

(3) Eighty-five percent of all other approved costs.

(b) Limitation of reimbursement. To determine the amounts payable to the Contractor under this letter contract, the Contracting Officer shall determine allowable costs in accordance with the applicable cost principles in the FAA Acquisition Management System. The total reimbursement made under this paragraph shall not exceed 85 percent of the maximum amount of the Government's liability, as stated in this contract.

(c) Invoicing. Payments shall be made promptly to the Contractor when requested as work progresses, but (except for small business concerns) not more often than every 2 weeks, in amounts approved by the Contracting Officer. The Contractor may submit to an authorized representative of the Contracting Officer, in such form and reasonable detail as the representative may require, an invoice or voucher supported by a statement of the claimed allowable cost incurred by the Contractor in the performance of this contract.

(d) Allowable costs. For the purpose of determining allowable costs, the term costs includes-

(1) Costs that the contractor has incurred and recorded at the time of the request for reimbursement;
(2) When the Contractor is not delinquent in payment of costs of contract performance in the ordinary course of business, costs incurred, but not necessarily paid, for--

(i) Materials issued from the Contractor's stores inventory and placed in the production process for use on the contract;

(ii) Direct labor;

(iii) Direct travel;

(iv) Other direct in-house costs; and

(v) Properly allocable and allowable indirect costs as shown on the records maintained by the Contractor for purposes of obtaining reimbursement under Government contracts; and

(3) The amount of payments that have been paid to the Contractor's subcontractors under similar cost standards.

(e) Small business concerns. A small business concern may receive more frequent payments than every 2 weeks and may invoice and be paid for recorded costs for items or services purchased directly for the contract, even though it has not yet paid for such items or services.

(f) Audit. At any time before final payment, the Contracting Officer may have the Contractor's invoices or vouchers and statements of costs audited. Any payment may be (1) reduced by any amounts found by the Contracting Officer not to constitute allowable costs or (2) adjusted for overpayments or underpayments made on preceding invoices or vouchers.

(End of clause)

PRESCRIPTION
May be used in SIR's and contracts when a letter/ceiling priced contract is contemplated and a cost reimbursement definitized contract is anticipated.