Common use of 501 General Clause in Contracts

501 General. Progress payments may be cus- tomary or unusual. Customary progress payments are those made under the general guidance in this sub- part, using the customary progress payment rate, the cost base, and fre- quency of payment established in the Progress Payments clause, and either

501 General. Progress payments may be cus- tomary or unusual. Customary progress payments are those made under the general guidance in this sub- part, using the customary progress payment rate, the cost base, and fre- quency of payment established in the Progress Payments clause, and eithereither the ordinary liquidation method or the alternate method as provided in sub- sections 32.503–8 and 32.503–9. Any other progress payments are considered un- usual, and may be used only in excep- tional cases when authorized in accord- ance with subsection 32.501–2.