this copy of the document filed as an exhibit excludes certain identified information because such information is both ( i ) not material and ( ii ) would likely cause competitive harm if publicly disclosed. omissions are designated by the symbol [ … * * * … ]. page 1 boeing proprietary aircraft delivery requirements and responsibilities between the boeing company and allegiant air, llc exhibit b to purchase agreement number pa - 05130 wje - pa - 05130 - exb page 2 boeing proprietary exhibit b aircraft delivery requirements, inspection, and responsibilities relating to boeing models 737 - 8 - 200 and 737 - 7 aircraft both boeing and customer have certain documentation and approval responsibilities at various times during the construction cycle of the aircraft that are critical to making the delivery of each aircraft a positive experience for both parties. this exhibit b documents those responsibilities and customer inspection rights and indicates recommended completion deadlines for the actions to be accomplished. 1. government documentation requirements. certain actions are required to be taken by customer in advance of the scheduled delivery month of each aircraft with respect to obtaining certain government issued documentation. 1. 1 airworthiness and registration documents. not later than [ … * * * … ] prior to delivery of each aircraft, customer will notify boeing of the registration number to be painted on the side of the aircraft. if required by the regulatory authority, customer will authorize, by letter to the regulatory authority having jurisdiction, the display of such registration numbers by boeing during the pre - delivery testing of the aircraft, no later than [ … * * * … ] prior to delivery of each aircraft. customer is responsible for furnishing any temporary or permanent registration certificates required by any governmental authority having jurisdiction to be displayed aboard the aircraft after delivery. 1. 2 certificate of airworthiness and certificate of sanitary construction, 1. 2. 1 u. s. registered aircraft. boeing will obtain from the faa, a ( transport category ) certificate of airworthiness and from the united states public health service, a united states certificate of sanitary construction each to be displayed aboard each aircraft upon delivery to customer. the above boeing obligation only applies to united states commercial passenger aircraft. 1. 2. 2 non - u. s. registered aircraft. if customer requires a united states certificate of sanitary construction at the time of delivery of the aircraft, customer will give written notice thereof to boeing at least [ … * * * … ] prior to delivery. boeing will then use commercially reasonable efforts to obtain the certificate