§ 4-2A-405
               	 		
4-2A-405.    Excused performance.
    Subject to    4-2A-404 on substituted performance, the following rules apply:
      (a)  Delay  in delivery or nondelivery in whole or in part by a lessor or a  supplier who complies with paragraphs (b) and (c) is not a default under  the lease contract if performance as agreed has been made impracticable  by the occurrence of a contingency the nonoccurrence of which was a  basic assumption on which the lease contract was made or by compliance  in good faith with any applicable foreign or domestic governmental  regulation or order, whether or not the regulation or order later proves  to be invalid.
      (b)  If the causes  mentioned in paragraph (a) affect only part of the lessor's or the  supplier's capacity to perform, he or she shall allocate production and  deliveries among his or her customers but at his or her option may  include regular customers not then under contract for sale or lease as  well as his or her own requirements for further manufacture. He or she  may so allocate in any manner that is fair and reasonable.
      (c)  The  lessor seasonably shall notify the lessee and in the case of a finance  lease the supplier seasonably shall notify the lessor and the lessee, if  known, that there will be delay or nondelivery and, if allocation is  required under paragraph (b), of the estimated quota thus made available  for the lessee.