33 CFR §169.245
- (a)If a ship's LRIT equipment is switched off or fails to operate, the ship's master must inform his or her Flag Administration without undue delay.
- (b)The master must also make an entry in the ship's logbook that states—
- (1)His or her reason for switching the LRIT equipment off, or an entry that the equipment has failed to operate, and
- (2)The period during which the LRIT equipment was switched off or non-operational.