131.585—Periodic servicing of hydrostatic-release units.
(a)
Except a disposable hydrostatic-release unit with an expiration date, each hydrostatic-release unit must be serviced—
(1)
Within 12 months of its manufacture and within 12 months of each subsequent servicing, except when a servicing due after 12 months is delayed not more than 5 months until the next scheduled inspection of the vessel; and
(b)
The springs of each spring-tensioned gripe used with a hydrostatic-release unit must be renewed when the unit is serviced and tested.