If at any time all or any part of the Collateral is to be sold, transferred, assigned or otherwise disposed of by the Issuer or the Indenture Trustee or any Person on its or their behalf (but in any such case only as required or permitted by the Operative Agreements), the Indenture Trustee upon receipt of written notice from the Issuer, which notice shall be delivered at least five (5) Business Days prior to such sale, transfer, assignment or disposal, on or prior to the date of such sale, transfer, assignment or disposal (but not to be effective until the date of such sale, transfer, assignment or disposal) (or, in the case of a Lessee’s exercise of a purchase option, on, immediately prior to or after the date of such purchase, as may be requested by the Issuer), at the expense of the Issuer, execute such instruments of release prepared by the Issuer, in recordable form, if necessary, in favor of the Issuer or any other Person as the Issuer may reasonably request, deliver the relevant part of the Collateral in its possession to the Issuer, otherwise release the Security Interest evidenced by this Master Indenture on such Collateral and release and deliver such Collateral to the Issuer and issue confirmation, to the relevant purchaser, transferee, assignee, insurer, and such other Persons as the Issuer may direct, upon being requested to do so by the Issuer, that the relevant Collateral is no longer subject to the Security Interests. Any such release to the Issuer shall be deemed to release or reassign as appropriate in respect of the Collateral such grants and assignments arising hereunder.