When program comes into force
(1) A transport security program given under section 26B comes into force at the time specified in the notice giving the program. The time specified must not be earlier than the time the notice is given.
Period in which program remains in force
(2) The program remains in force until the earliest of the following times:
(a) if the notice giving the program specifies a time at which the program ceases to be in force--that time;
(b) if the program is replaced under section 26F--the time of replacement;
(c) if the program is cancelled under section 26F, 26G or 26H--the time of cancellation.