51.58—What actions may or must the concessioner take with respect to a leasehold surrender interest?
The concessioner:
(a)
May encumber a leasehold surrender interest in accordance with this part, but only for the purposes specified in this part;
(b)
Where applicable, must transfer in accordance with this part its leasehold surrender interest in connection with any assignment, termination or expiration of the concession contract; and